Η χαλαζόπτωση αποτελεί έναν από τους σοβαρότερους κινδύνους της γεωργικής παραγωγής. Οι άμεσες συνέπειες της παρατηρούνται στη διάλυση της επιδερμίδας και τον τραυματισμό ή και την πτώση των ανθέων, καρπών, φύλλων και βλαστών, ενώ επιπρόσθετα τα πληγέντα φυτά παρουσιάζουν μεγαλύτερη ευαισθησία σε μυκητολογικές ασθένειες και σε εντομολογικές προσβολές. Σκοπός Η έγκαιρη αξιολόγηση σε ημερήσια βάση, όσον αφορά στο αν θα προκύψει φυσική καταστροφή λόγω χαλαζόπτωσης, μπορεί συμβάλλει καθοριστικά στην προστασία του γεωργικού κεφαλαίου της χώρας, αφού θα ενδυναμώσει σημαντικά τους μηχανισμούς πολιτικής προστασίας και θα δημιουργήσει τις κατάλληλες συνθήκες για βιώσιμη ανάπτυξη και οικονομική ευημερία. Υλικό Για τον έγκαιρο και έγκυρο χαρακτηρισμό (πρόβλεψη) μιας ημέρας ως ημέρα χαλαζόπτωσης, δημιουργήθηκε ένα νευρωνικό δίκτυο εμπρόσθιας τροφοδοσίας, το οποίο είναι ικανό να προβλέψει την χαλαζόπτωση. Για την εκπαίδευση και αξιολόγηση του συστήματος, χρησιμοποιήθηκαν τα ιστορικά δεδομένα χαλαζόπτωσης καθώς και τα μετεωρολογικά δεδομένα των τελευταίων 18 ετών της Κεντρικής Μακεδονίας. Μέθοδος Η σχεδίαση και ανάπτυξη του προτεινόμενου συστήματος πραγματοποιήθηκε με τη χρήση τεχνητών νευρωνικών δικτύων τα οποία έχουν την δυνατότητα να μοντελοποιήσουν πολύπλοκα μη γραμμικά προβλήματα ταξινόμησης (classification) εκμεταλλευόμενα την εγγενή ικανότητα μάθησης των τεχνητών νευρώνων. Η προσέγγιση επιλέχθηκε μετά από εξαντλητικές δοκιμές και συγκρίσεις διαφορετικών αλγοριθμικών μεθόδων μηχανικής μάθησης. Αποτελέσματα Τα αποτελέσματα της έρευνας είναι ιδιαίτερα ενθαρρυντικά καθώς η πρόβλεψη της χαλαζόπτωσης επιτυγχάνεται με ποσοστό ακρίβειας (Accuracy) 91,5%. Το γεγονός της ύπαρξης πολλών δεδομένων που αφορούν σε μεγάλο πλήθος εμπλεκομένων παραμέτρων, συνέβαλε σημαντικά στην επιτυχία της συγκεκριμένης μεθόδου. Συμπεράσματα Η εργασία προτείνει ένα σύστημα Μηχανικής Μάθησης με δυνατότητα ταξινόμησης των περιπτώσεων ως ημέρες χαλαζόπτωσης ή όχι. Το κυριότερο είναι ότι αυτό γίνεται εύκολα, γρήγορα και με μεγάλη ακρίβεια. Η αξιοπιστία και η βέλτιστη απόδοση του προτεινόμενου συστήματος με νέα δεδομένα που δεν είχαν καμία σχέση με τα δεδομένα εκπαίδευσης, προέκυψε μετά από την πραγματοποίηση εκτεταμένων συγκρίσεων μεταξύ διαφορετικών αλγοριθμικών προσεγγίσεων και αρχιτεκτονικών.
Commentary: Aedes albopictus and Aedes japonicus—two invasive mosquito specie...Konstantinos Demertzis
In this interesting and original study, the authors present an ensemble Machine Learning (ML) model for the prediction of the habitats’ suitability, which is affected by the complex interactions between living conditions and survival-spreading climate factors. The research focuses in two of the most dangerous invasive mosquito species in Europe with the requirements’ identification in temperature and rainfall conditions. Though it is an interesting approach, the ensemble ML model is not presented and discussed in sufficient detail and thus its performance and value as a tool for modeling the distribution of invasive species cannot be adequately evaluated.
A Dynamic Intelligent Policies Analysis Mechanism for Personal Data Processin...Konstantinos Demertzis
The evolution of the Internet of Things is significantly a
ected by legal restrictions imposed for personal data handling, such as the European General Data Protection Regulation (GDPR).
The main purpose of this regulation is to provide people in the digital age greater control over their personal data, with their freely given, specific, informed and unambiguous consent to collect and process the data concerning them. ADVOCATE is an advanced framework that fully complies with the requirements of GDPR, which, with the extensive use of blockchain and artificial intelligence technologies, aims to provide an environment that will support users in maintaining control of their personal data in the IoT ecosystem. This paper proposes and presents the Intelligent Policies Analysis Mechanism (IPAM) of the ADVOCATE framework, which, in an intelligent and fully automated manner, can identify conflicting rules or consents of the user, which may lead to the collection of personal data that can be used for profiling. In order to clearly identify and implement IPAM, the problem of recording user data from smart entertainment devices using Fuzzy Cognitive Maps (FCMs) was simulated. FCMs are an intelligent decision-making system that simulates the processes of a complex system, modeling the correlation base, knowing the behavioral and balance specialists of the system. Respectively, identifying conflicting rules that can lead to a profile, training is done using Extreme Learning Machines (ELMs), which are highly ecient neural systems of small and flexible architecture that can work optimally in complex environments.
The Next Generation Cognitive Security Operations Center: Adaptive Analytic L...Konstantinos Demertzis
A Security Operations Center (SOC) is a central technical level unit responsible for monitoring, analyzing, assessing, and defending an organization’s security posture on an ongoing basis. The SOC staff works closely with incident response teams, security analysts, network engineers and organization managers using sophisticated data processing technologies such as security analytics, threat intelligence, and asset criticality to ensure security issues are detected, analyzed and finally addressed quickly. Those techniques are part of a reactive security strategy because they rely on the human factor, experience and the judgment of security experts, using supplementary technology to evaluate the risk impact and minimize the attack surface. This study suggests an active security strategy that adopts a vigorous method including ingenuity, data analysis, processing and decision-making support to face various cyber hazards. Specifically, the paper introduces a novel intelligence driven cognitive computing SOC that is based exclusively on progressive fully automatic procedures. The proposed -Architecture Network Flow Forensics Framework (-NF3) is an efficient cybersecurity defense framework against adversarial attacks. It implements the Lambda machine learning architecture that can analyze a mixture of batch and streaming data, using two accurate novel computational intelligence algorithms. Specifically, it uses an Extreme Learning Machine neural network with Gaussian Radial Basis Function kernel (ELM/GRBFk) for the batch data analysis and a Self-Adjusting Memory k-Nearest Neighbors classifier (SAM/k-NN) to examine patterns from real-time streams. It is a forensics tool for big data that can enhance the automate defense strategies of SOCs to effectively respond to the threats their environments face.
The Next Generation Cognitive Security Operations Center: Network Flow Forens...Konstantinos Demertzis
A Security Operations Center (SOC) can be defined as an organized and highly skilled team that uses advanced computer forensics tools to prevent, detect and respond to cybersecurity incidents of an organization. The fundamental aspects of an effective SOC is related to the ability to examine and analyze the vast number of data flows and to correlate several other types of events from a cybersecurity perception. The supervision and categorization of network flow is an essential process not only for the scheduling, management, and regulation of the network’s services, but also for attacks identification and for the consequent forensics’ investigations. A serious potential disadvantage of the traditional software solutions used today for computer network monitoring, and specifically for the instances of effective categorization of the encrypted or obfuscated network flow, which enforces the rebuilding of messages packets in sophisticated underlying protocols, is the requirements of computational resources. In addition, an additional significant inability of these software packages is they create high false positive rates because they are deprived of accurate predicting mechanisms.
For all the reasons above, in most cases, the traditional software fails completely to recognize unidentified vulnerabilities and zero-day exploitations. This paper proposes a novel intelligence driven Network Flow Forensics Framework (NF3) which uses low utilization of computing power and resources, for the Next Generation Cognitive Computing SOC (NGC2SOC) that rely solely on advanced fully automated intelligence methods. It is an effective and accurate Ensemble Machine Learning forensics tool to Network Traffic Analysis, Demystification of Malware Traffic and Encrypted Traffic Identification.
GeoAI: A Model-Agnostic Meta-Ensemble Zero-Shot Learning Method for Hyperspec...Konstantinos Demertzis
Deep learning architectures are the most e
ective methods for analyzing and classifying Ultra-Spectral Images (USI). However, e ective training of a Deep Learning (DL) gradient classifier aiming to achieve high classification accuracy, is extremely costly and time-consuming. It requires huge datasets with hundreds or thousands of labeled specimens from expert scientists. This research exploits the MAML++ algorithm in order to introduce the Model-Agnostic Meta-Ensemble Zero-shot Learning (MAME-ZsL) approach. The MAME-ZsL overcomes the above diculties, and it can be used as a powerful model to perform Hyperspectral Image Analysis (HIA). It is a novel optimization-based Meta-Ensemble Learning architecture, following a Zero-shot Learning (ZsL) prototype. To the best of our knowledge it is introduced to the literature for the first time. It facilitates learning of specialized techniques for the extraction of user-mediated representations, in complex Deep Learning architectures. Moreover, it leverages the use of first and second-order derivatives as pre-training methods. It enhances learning of features which do not cause issues of exploding or diminishing gradients; thus, it avoids potential overfitting. Moreover, it significantly reduces computational cost and training time, and it oers an improved training stability, high generalization performance and remarkable classification accuracy.
Modeling and Forecasting the COVID-19 Temporal Spread in Greece: An Explorato...Konstantinos Demertzis
Within the complex framework of anti-COVID-19 health management, where the criteria of diagnostic testing, the availability of public-health resources and services, and the applied anti-COVID-19 policies vary between countries, the reliability and accuracy in the modeling of temporal spread can prove to be effective in the worldwide fight against the disease. This paper applies an exploratory time-series analysis to the evolution of the disease in Greece, which currently suggests a success story of COVID-19 management. The proposed method builds on a recent conceptualization of detecting connective communities in a time-series and develops a novel spline regression model where the knot vector is determined by the community detection in the complex network. Overall, the study contributes to the COVID-19 research by proposing a free of disconnected past-data and reliable framework of forecasting, which can facilitate decision-making and management
of the available health resources.
Commentary: Aedes albopictus and Aedes japonicus—two invasive mosquito specie...Konstantinos Demertzis
In this interesting and original study, the authors present an ensemble Machine Learning (ML) model for the prediction of the habitats’ suitability, which is affected by the complex interactions between living conditions and survival-spreading climate factors. The research focuses in two of the most dangerous invasive mosquito species in Europe with the requirements’ identification in temperature and rainfall conditions. Though it is an interesting approach, the ensemble ML model is not presented and discussed in sufficient detail and thus its performance and value as a tool for modeling the distribution of invasive species cannot be adequately evaluated.
A Dynamic Intelligent Policies Analysis Mechanism for Personal Data Processin...Konstantinos Demertzis
The evolution of the Internet of Things is significantly a
ected by legal restrictions imposed for personal data handling, such as the European General Data Protection Regulation (GDPR).
The main purpose of this regulation is to provide people in the digital age greater control over their personal data, with their freely given, specific, informed and unambiguous consent to collect and process the data concerning them. ADVOCATE is an advanced framework that fully complies with the requirements of GDPR, which, with the extensive use of blockchain and artificial intelligence technologies, aims to provide an environment that will support users in maintaining control of their personal data in the IoT ecosystem. This paper proposes and presents the Intelligent Policies Analysis Mechanism (IPAM) of the ADVOCATE framework, which, in an intelligent and fully automated manner, can identify conflicting rules or consents of the user, which may lead to the collection of personal data that can be used for profiling. In order to clearly identify and implement IPAM, the problem of recording user data from smart entertainment devices using Fuzzy Cognitive Maps (FCMs) was simulated. FCMs are an intelligent decision-making system that simulates the processes of a complex system, modeling the correlation base, knowing the behavioral and balance specialists of the system. Respectively, identifying conflicting rules that can lead to a profile, training is done using Extreme Learning Machines (ELMs), which are highly ecient neural systems of small and flexible architecture that can work optimally in complex environments.
The Next Generation Cognitive Security Operations Center: Adaptive Analytic L...Konstantinos Demertzis
A Security Operations Center (SOC) is a central technical level unit responsible for monitoring, analyzing, assessing, and defending an organization’s security posture on an ongoing basis. The SOC staff works closely with incident response teams, security analysts, network engineers and organization managers using sophisticated data processing technologies such as security analytics, threat intelligence, and asset criticality to ensure security issues are detected, analyzed and finally addressed quickly. Those techniques are part of a reactive security strategy because they rely on the human factor, experience and the judgment of security experts, using supplementary technology to evaluate the risk impact and minimize the attack surface. This study suggests an active security strategy that adopts a vigorous method including ingenuity, data analysis, processing and decision-making support to face various cyber hazards. Specifically, the paper introduces a novel intelligence driven cognitive computing SOC that is based exclusively on progressive fully automatic procedures. The proposed -Architecture Network Flow Forensics Framework (-NF3) is an efficient cybersecurity defense framework against adversarial attacks. It implements the Lambda machine learning architecture that can analyze a mixture of batch and streaming data, using two accurate novel computational intelligence algorithms. Specifically, it uses an Extreme Learning Machine neural network with Gaussian Radial Basis Function kernel (ELM/GRBFk) for the batch data analysis and a Self-Adjusting Memory k-Nearest Neighbors classifier (SAM/k-NN) to examine patterns from real-time streams. It is a forensics tool for big data that can enhance the automate defense strategies of SOCs to effectively respond to the threats their environments face.
The Next Generation Cognitive Security Operations Center: Network Flow Forens...Konstantinos Demertzis
A Security Operations Center (SOC) can be defined as an organized and highly skilled team that uses advanced computer forensics tools to prevent, detect and respond to cybersecurity incidents of an organization. The fundamental aspects of an effective SOC is related to the ability to examine and analyze the vast number of data flows and to correlate several other types of events from a cybersecurity perception. The supervision and categorization of network flow is an essential process not only for the scheduling, management, and regulation of the network’s services, but also for attacks identification and for the consequent forensics’ investigations. A serious potential disadvantage of the traditional software solutions used today for computer network monitoring, and specifically for the instances of effective categorization of the encrypted or obfuscated network flow, which enforces the rebuilding of messages packets in sophisticated underlying protocols, is the requirements of computational resources. In addition, an additional significant inability of these software packages is they create high false positive rates because they are deprived of accurate predicting mechanisms.
For all the reasons above, in most cases, the traditional software fails completely to recognize unidentified vulnerabilities and zero-day exploitations. This paper proposes a novel intelligence driven Network Flow Forensics Framework (NF3) which uses low utilization of computing power and resources, for the Next Generation Cognitive Computing SOC (NGC2SOC) that rely solely on advanced fully automated intelligence methods. It is an effective and accurate Ensemble Machine Learning forensics tool to Network Traffic Analysis, Demystification of Malware Traffic and Encrypted Traffic Identification.
GeoAI: A Model-Agnostic Meta-Ensemble Zero-Shot Learning Method for Hyperspec...Konstantinos Demertzis
Deep learning architectures are the most e
ective methods for analyzing and classifying Ultra-Spectral Images (USI). However, e ective training of a Deep Learning (DL) gradient classifier aiming to achieve high classification accuracy, is extremely costly and time-consuming. It requires huge datasets with hundreds or thousands of labeled specimens from expert scientists. This research exploits the MAML++ algorithm in order to introduce the Model-Agnostic Meta-Ensemble Zero-shot Learning (MAME-ZsL) approach. The MAME-ZsL overcomes the above diculties, and it can be used as a powerful model to perform Hyperspectral Image Analysis (HIA). It is a novel optimization-based Meta-Ensemble Learning architecture, following a Zero-shot Learning (ZsL) prototype. To the best of our knowledge it is introduced to the literature for the first time. It facilitates learning of specialized techniques for the extraction of user-mediated representations, in complex Deep Learning architectures. Moreover, it leverages the use of first and second-order derivatives as pre-training methods. It enhances learning of features which do not cause issues of exploding or diminishing gradients; thus, it avoids potential overfitting. Moreover, it significantly reduces computational cost and training time, and it oers an improved training stability, high generalization performance and remarkable classification accuracy.
Modeling and Forecasting the COVID-19 Temporal Spread in Greece: An Explorato...Konstantinos Demertzis
Within the complex framework of anti-COVID-19 health management, where the criteria of diagnostic testing, the availability of public-health resources and services, and the applied anti-COVID-19 policies vary between countries, the reliability and accuracy in the modeling of temporal spread can prove to be effective in the worldwide fight against the disease. This paper applies an exploratory time-series analysis to the evolution of the disease in Greece, which currently suggests a success story of COVID-19 management. The proposed method builds on a recent conceptualization of detecting connective communities in a time-series and develops a novel spline regression model where the knot vector is determined by the community detection in the complex network. Overall, the study contributes to the COVID-19 research by proposing a free of disconnected past-data and reliable framework of forecasting, which can facilitate decision-making and management
of the available health resources.
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Πρόβλεψη Χαλαζοπτώσεων Μέσω Μηχανικής Μάθησης
1. Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
Anezakis Vardis-Dimitris
Konstantinos Demertzis – Lazaros Iliadis
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
2. 2
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
Περιεχόμενα:
– Εισαγωγή
– Ανασκόπηση Βιβλιογραφίας
– Περιοχή Μελέτης
– Προτεινόμενο σύστημα
– Καινοτομία και σκοπός του προτεινόμενου συστήματος
– Υλικά και Μέθοδοι
– Αποτελέσματα-Συμπεράσματα
– Μελλοντικές Κατευθύνσεις
– Βιβλιογραφία
– Ερωτήσεις
– Συζήτηση
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
3. 3
Εισαγωγή
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Δεδομένα χαλαζόπτωσης - μετεωρολογικά δεδομένα των
τελευταίων 18 ετών τμημάτων κυρίως των νομών της Κεντρικής
Μακεδονίας.
– Ομαδοποίηση (classification) των μετεωρολογικών συνθηκών
που συσχετίζονται με την καταγραφή ή την απουσία
χαλαζόπτωσης.
– Σύστημα Μηχανικής Μάθησης - Αλγόριθμοι Μηχανικής Μάθησης.
Μοντελοποίηση πολύπλοκων μη γραμμικών προβλημάτων.
– Λογισμικό Matlab.
– Προγνωστικό εργαλείο πολιτικής προστασίας .
– Ελαχιστοποίηση των περιβαλλοντικών και κοινωνικοοικονομικών
επιπτώσεων - Εγκυρη προειδοποίηση εμφάνισης χαλαζιού
4. 4
Ορισμοί
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Χαλάζι
– Ατμοσφαιρικό κατακρήμνισμα σκληρού πάγου, διαμέτρου
μεγαλύτερο από 5 χιλιοστά.
– Οι χαλαζόκοκκοι δημιουργούνται μέσα σε καταιγίδες, όταν
μικροί παγοκρύσταλλοι συναντήσουν υγρό νερό, εξαιρετικά
χαμηλών θερμοκρασιών (-40 C).
– Mικρής σχετικά διάρκειας και αυστηρά τοπικού χαρακτήρα
5. 5
Ορισμοί βασικών εννοιών
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Τεχνητά Νευρωνικά Δίκτυα (ΤΝΔ)
– Τα τεχνητά Νευρωνικά Δίκτυα είναι εμπνευσμένα από την
δομή και τη λειτουργία του εγκεφάλου. Βασικό δομικό
στοιχείο του εγκεφάλου είναι οι νευρώνες.
– Η υπολογιστική ισχύς των ΤΝΔ επιτυγχάνεται μέσω της
παράλληλα κατανεμημένης δομής τους και μέσω της
ικανότητάς τους να μαθαίνουν και συνεπώς να γενικεύουν.
– Η μάθηση γίνεται με τη χρήση κάποιων παραδειγμάτων
εκπαίδευσης και ενός αλγορίθμου εκπαίδευσης και αφορά
στη σταδιακή βελτίωση της προγνωστικής ικανότητας του
δικτύου (απόδοσης) η οποία επιτυγχάνεται μέσω της
εκπαίδευσης, της επαναληπτικής δηλαδή διαδικασίας
σταδιακής προσαρμογής των συναπτικών βαρών.
6. 6
Ορισμοί βασικών εννοιών
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Τεχνητά Νευρωνικά Δίκτυα (ΤΝΔ)
– Στα δίκτυα εμπρόσθιας τροφοδότησης, οι νευρώνες είναι
οργανωμένοι σε μορφή επιπέδων με την ροή του σήματος να
ξεκινά από το επίπεδο εισόδου (input layer), προς το επίπεδο
εξόδου (output layer), µέσω των κρυφών επιπέδων (hidden
layers).
– Οι νευρώνες εισόδου απλά μεταφέρουν το σήμα στο επόμενο
επίπεδο χωρίς να κάνουν καμία επεξεργασία, ενώ οι κρυφοί
νευρώνες και οι νευρώνες εξόδου είναι υπολογιστικοί
νευρώνες που ακολουθούν το μοντέλο του νευρώνα
υλοποιώντας ένα σύνολο πράξεων για την επίλυση του
προβλήματος που μοντελοποιούν.
7. 7
Ορισμοί βασικών εννοιών
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Τεχνητά Νευρωνικά Δίκτυα (ΤΝΔ)
8. 8
Ανασκόπηση Βιβλιογραφίας
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Αλγόριθμοι και μέθοδοι μηχανικής μάθησης στην πρόβλεψη
μοντελοποίηση και κατηγοριοποίηση ακραίων καιρικών
φαινομένων:
[Manzato A., 2013]
– Προγνωστική πολυσύνθετη ανάλυση για το χαλάζι,
χρησιμοποιώντας γραμμικές και μη γραμμικές προσεγγίσεις
για την εύρεση των καλύτερων αποτελεσμάτων από το
συνδυασμό νευρωνικών δικτύων.
[Gagne et all., 2013 ]
– Να αυξήσει την ακρίβεια της πρόγνωσης της ισχυρής
χαλαζόπτωσης. Συνδυαστική κλίμακα καταιγίδας αριθμητικών
μοντέλων πρόγνωσης καιρού σε ένα χωροχρονικό μοντέλο.
9. 9
Ανασκόπηση Βιβλιογραφίας
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Αλγόριθμοι και μέθοδοι μηχανικής μάθησης στην πρόβλεψη
μοντελοποίηση και κατηγοριοποίηση ακραίων καιρικών
φαινομένων:
[She et all., 2010]
– Μοντελοποίηση χαλαζιού χρησιμοποιώντας ασαφό-
νευρωνικά δίκτυα και μηχανές υποστήριξης διανυσμάτων.
[Fan et all., 2015]
– Να κατηγοριοποίησουν τη βροχόπτωση και τη χαλαζόπτωση
χρησιμοποιώντας μηχανές υποστήριξης διανυσμάτων.
[Choudhury et all., 2004]
– Νευρωνικά δίκτυα για την κατηγοριοποίηση των περιστατικών
εμφάνισης ή απουσίας καταιγίδων πάνω από την ανατολική
ακτή της Ινδίας.
10. 10
Ανασκόπηση Βιβλιογραφίας
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Αλγόριθμοι και μέθοδοι μηχανικής μάθησης στην πρόβλεψη
μοντελοποίηση και κατηγοριοποίηση ακραίων καιρικών
φαινομένων:
[Ultschetall., 2004]
– Χρησιμοποίησαν αυτο-οργανούμενους χάρτες για την
κατηγοριοποίηση των χαρακτηριστικών μιας χαλαζόπτωσης
με απώτερο σκοπό την πρόβλεψη της.
[McGovernetall., 2014]
– Ανέπτυξαν χωροχρονικές τεχνικές μηχανικής μάθησης για την
πρόβλεψη ακραίων φαινομένων με τη χρήση προγνωστικών
μοντέλων.
11. 11
Περιοχή Μελέτης
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Νομοί Ημαθίας και Πέλλας, αλλά και τμήματα των νομών
Πιερίας, Θεσσαλονίκης και Κιλκίς. Συνολική έκταση 2.670
km².
12. 12
Προτεινόμενο σύστημα
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Καινοτομία Προτεινόμενου συστήματος
– Μελέτη των μετεωρολογικών δεδομένων για τις ημέρες
καταγραφής χαλαζόπτωσης από γειτονικούς
μετεωρολογικούς σταθμούς της περιοχής.
– Ομαδοποίηση των ατμοσφαιρικών συνθηκών που
συσχετίζονται με την καταγραφή ή την απουσία
χαλαζόπτωσης.
– Πρόβλεψη με μεγάλη επιτυχία της πιθανότητας της
χαλαζόπτωσης εισάγοντας και ομαδοποιώντας νέα
μετεωρολογικά δεδομένα.
– Χρήση Τεχνητών Νευρωνικών Δικτύων (ΤΝΔ) τα οποία έχουν
τη δυνατότητα να μοντελοποιούν πολύπλοκα μη γραμμικά
προβλήματα.
13. 13
Προτεινόμενο σύστημα
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Καινοτομία Προτεινόμενου συστήματος
– Η βέλτιστη προσέγγιση επιλέχθηκε μετά από εξαντλητικές
δοκιμές και συγκρίσεις διαφορετικών αλγοριθμικών μεθόδων,
ενώ το πρόβλημα ήταν πολυπαραμετρικό και υψηλής
πολυπλοκότητας.
14. 14
Προτεινόμενο σύστημα
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Καινοτομία Προτεινόμενου συστήματος
– Εγκυρη προειδοποίηση εμφάνισης χαλαζιού.
– Καταστολή χαλαζιού με σπορά των καταιγιδοφόρων νεφών.
– Ελαχιστοποίηση των καταστροφών στην αγροτική παραγωγή
και των αγροτικών αποζημιώσεων.
– Μπορεί να χρησιμοποιηθεί τόσο από τους μηχανισμούς
πολιτικής προστασίας, όσο και από τους απλούς αγρότες και
πολίτες μιας περιοχής.
– Θα ενημερώνονται οι υπηρεσίες τροποποίησης καιρού ειδικά
όταν το ραντάρ καιρού μένει εκτός λειτουργίας .
15. 15
Υλικά και Μέθοδοι
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Χρησιμοποιήθηκε αντιπροσωπευτικό σύνολο δεδομένων
ώστε η εκπαίδευση αλγόριθμων μηχανικής μάθησης, να
οδηγήσει σε γενίκευση (μάθηση και όχι απομνημόνευση).
– Ως ανεξάρτητες μεταβλητές χρησιμοποιήθηκαν τα
μετεωρολογικά δεδομένα θερμοκρασία, υγρασία,
ατμοσφαιρική πίεση, ένταση ανέμου και ώρες ηλιοφάνειας
(διανύσματα εισόδου), ενώ ως εξαρτημένη μεταβλητή η
χαλαζόπτωση ή μη χαλαζόπτωση (διανύσματα εξόδου).
Δυαδική ταξινόμηση (Binary Classification 1 Ναι, 0 Όχι).
– Οι καταμετρήσεις αφορούν στην περίοδο από 1 Απριλίου έως
τις 30 Σεπτεμβρίου για τα τελευταία 18 έτη στις οποίες
καταμετρήθηκαν 231 περιπτώσεις χαλαζόπτωσης.
16. 16
Υλικά και Μέθοδοι
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Από το σύνολο των δεδομένων (2884 εγγραφές), το 70%
(2018 εγγραφές) επιλέχθηκε για την εκπαίδευση (training) και
αντίστοιχα το υπόλοιπο 30% (866 εγγραφές) μοιράστηκε
ισόποσα για την επικύρωση (validation) και για τον έλεγχο
(testing) των προτεινόμενων αλγορίθμων μηχανικής
μάθησης.
18. 18
Αποτελέσματα-Συζήτηση
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Νευρωνικό δίκτυο εμπρόσθιας τροφοδοσίας με 10 νευρώνες
στο κρυφό επίπεδο απέδωσε μεγαλύτερη ακρίβεια
ταξινόμησης (classification) με ποσοστό 91,5%, καθώς και τα
καλύτερα αποτελέσματα σε όλα τα μετρικά μετά από 12
επαναλήψεις.
19. 19
Αποτελέσματα-Συζήτηση
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Καλά αποτελέσματα εξήχθησαν από τις μηχανές υποστήριξης
διανύσματος (SVM) ενώ αντιθέτως την μικρότερη ακρίβεια
πρόβλεψης και παράλληλα το υψηλότερο μέσο τετραγωνικό
σφάλμα, απέδωσε ο αλγόριθμος k-Nearest Neighbours.
Ταξινομητής Ακρίβεια
Ρίζα Μέσου
Τετραγωνικού
Σφάλματος
Εμβαδόν ROC
ΤΝΔΕΤ 91,5 % 0,2660 0,975
RBF 74,4 % 0,4208 0,811
SVM 89,8 % 0,3191 0,898
kNN 73,2 % 0,4261 0,804
RF 84,6 % 0,3919 0,852
20. 20
Αποτελέσματα-Συζήτηση
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Νευρωνικό δίκτυο εμπρόσθιας τροφοδοσίας με 10 νευρώνες
στο κρυφό επίπεδο απέδωσε μεγαλύτερη ακρίβεια
ταξινόμησης (classification) με ποσοστό 91,5%, καθώς και τα
καλύτερα αποτελέσματα σε όλα τα μετρικά μετά από 12
επαναλήψεις.
μη χαλαζόπτωση χαλαζόπτωση
2426 227 μη χαλαζόπτωση
217 2324 χαλαζόπτωση
21. 21
Αποτελέσματα-Συζήτηση
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Η ευρεία εφαρμογή της προτεινόμενης μεθόδου θα καταδείξει
αν μπορεί να εκτιμά αξιόπιστα την καταγραφή χαλαζόπτωσης
σε πραγματικές συνθήκες.
– Η ευρεία συλλογή μετεωρολογικών δεδομένων, αποτελεί
απαραίτητη προϋπόθεση για την ανάλυση και την
ομαδοποίηση των καιρικών παραμέτρων που καθορίζουν τις
συνθήκες χαλαζόπτωσης.
– Τα οφέλη μιας τέτοιας μελέτης είναι να δωθεί το κίνητρο να
μελετηθούν και άλλα εξίσου επικίνδυνα φαινόμενα καθώς και
να χρησιμοποιηθούν τα πιο σύγχρονα υπολογιστικά εργαλεία
ώστε να μπορούν να ελαχιστοποιηθούν οι περιβαλλοντικές
και κοινωνικοοικονομικές επιπτώσεις.
22. 22
Επισκόπηση
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Ενισχύει τις μεθόδους ανάλυσης των συνθηκών που
δημιουργούν τέτοιου είδους φαινόμενα.
– Ενδυναμώνει τεχνολογικά παράλληλα τους μηχανισμούς
πολιτικής προστασίας και τα συστήματα έγκαιρης
προειδοποιήσεως του κρατικού μηχανισμού χωρίς πρόσθετη
οικονομική επιβάρυνση.
– Παράλληλα από την μείωση των ζημιών θα υπάρχει
πρόσθετο οικονομικό όφελος.
23. 23
Μελλοντικές Κατευθύνσεις
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
– Να συνδυάζονται υβριδικά διαφορετικές μέθοδοι μηχανικής
μάθησης (semi-supervised and unsupervised learning), για
την περαιτέρω βελτιστοποίηση της ακρίβειας πρόβλεψης της
χαλαζόπτωσης.
– Η χρησιμοποίηση μεθόδων επιλογής των καταλληλότερων
χαρακτηριστικών θα μπορούσε να ενισχύσει ουσιαστικά την
διαδικασία ταξινόμησης.
– Η χρήση κάποιας ευρετικής μεθόδου βελτιστοποίησης.
24. 24
Βιβλιογραφία
– Choudhury S., Mitra S, Chakraborty H (2004) A connectionist approach to thunderstorm
forecasting, NAFIPS, Vol1:330-334.
– Fan W., Wang P., Yuan Y, Sun H.Y (2015) Heavy rain/hail classification model based
on SVM classification credibility, Beijing Univ of Tech Vol 41 Issue 3:361-365.
– Gagne D.J., McGovern A., Brotzge J, Xue M (2013) Severe Hail Prediction within a
Spatiotemporal Relational Data Mining Framework, ICDMW, TX:994-1001.
– Manzato A (2013) Hail in Northeast Italy: A neural network ensemble forecast using
sounding-derived indices Weather and Forecasting, Vol 28 Issue1:3-28.
– McGovern A., Gagne II D.J., Williams J.K., Brown R.A, Basara J.B (2014) Enhancing
understanding and improving prediction of severe weather through spatiotemporal
relational learning Machine Learning, Vol 95 Issue 1: 27-50.
– She Y., Yu L, Wei Y (2010) Application research on intelligent pattern recognition
methods in hail identification of weather radar, ICCASM, Taiyuan Vol1:554-558.
– Ultsch A., Guimaraes G, Schmid W (1996) Classification and prediction of hail using
self-organizing neural networks, Neural Networks, 1996 Vol 3:1622-1627.
Democritus University of Thrace
Dep. of Forestry & Management of the Environment & Natural Resources
Forest Informatics Laboratory
ΠΡΟΒΛΕΨΗ ΧΑΛΑΖΟΠΤΩΣΕΩΝ ΜΕΣΩ ΜΗΧΑΝΙΚΗΣ ΜΑΘΗΣΗΣ
26. My Publications
1. Anezakis, V.-D., Demertzis, K., Iliadis, L., 2018. Classifying with fuzzy chi-square test:
The case of invasive species. AIP Conference Proceedings 1978, 290003.
https://doi.org/10/gdtm5q
2. Anezakis, V.-D., Demertzis, K., Iliadis, L., Spartalis, S., 2017a. Hybrid intelligent
modeling of wild fires risk. Evolving Systems 1–17. https://doi.org/10/gdp863
3. Anezakis, V.-D., Demertzis, K., Iliadis, L., Spartalis, S., 2016a. A Hybrid Soft Computing
Approach Producing Robust Forest Fire Risk Indices, in: Artificial Intelligence
Applications and Innovations, IFIP Advances in Information and Communication
Technology. Presented at the IFIP International Conference on Artificial Intelligence
Applications and Innovations, Springer, Cham, pp. 191–203.
https://doi.org/10.1007/978-3-319-44944-9_17
4. Anezakis, V.-D., Dermetzis, K., Iliadis, L., Spartalis, S., 2016b. Fuzzy Cognitive Maps for
Long-Term Prognosis of the Evolution of Atmospheric Pollution, Based on Climate
Change Scenarios: The Case of Athens, in: Computational Collective Intelligence,
Lecture Notes in Computer Science. Presented at the International Conference on
Computational Collective Intelligence, Springer, Cham, pp. 175–186.
https://doi.org/10.1007/978-3-319-45243-2_16
5. Anezakis, V.-D., Iliadis, L., Demertzis, K., Mallinis, G., 2017b. Hybrid Soft Computing
Analytics of Cardiorespiratory Morbidity and Mortality Risk Due to Air Pollution, in:
Information Systems for Crisis Response and Management in Mediterranean
Countries, Lecture Notes in Business Information Processing. Presented at the
International Conference on Information Systems for Crisis Response and
Management in Mediterranean Countries, Springer, Cham, pp. 87–105.
https://doi.org/10.1007/978-3-319-67633-3_8
6. Anezakis, V.D., Mallinis, G., Iliadis, L., Demertzis, K., 2018. Soft computing forecasting
of cardiovascular and respiratory incidents based on climate change scenarios, in:
2018 IEEE Conference on Evolving and Adaptive Intelligent Systems (EAIS). Presented
at the 2018 IEEE Conference on Evolving and Adaptive Intelligent Systems (EAIS), pp.
1–8. https://doi.org/10.1109/EAIS.2018.8397174
7. Bougoudis, I., Demertzis, K., Iliadis, L., 2016a. Fast and low cost prediction of extreme
air pollution values with hybrid unsupervised learning. Integrated Computer-Aided
Engineering 23, 115–127. https://doi.org/10/f8dt4t
8. Bougoudis, I., Demertzis, K., Iliadis, L., 2016b. HISYCOL a hybrid computational
intelligence system for combined machine learning: the case of air pollution modeling
in Athens. Neural Comput & Applic 27, 1191–1206. https://doi.org/10/f8r7vf
9. Bougoudis, I., Demertzis, K., Iliadis, L., Anezakis, V.-D., Papaleonidas, A., 2018.
FuSSFFra, a fuzzy semi-supervised forecasting framework: the case of the air pollution
in Athens. Neural Computing and Applications 29. https://doi.org/10/gc9bbf
10. Bougoudis, I., Demertzis, K., Iliadis, L., Anezakis, V.-D., Papaleonidas, A., 2016c. Semi-
supervised Hybrid Modeling of Atmospheric Pollution in Urban Centers, in:
Engineering Applications of Neural Networks, Communications in Computer and
Information Science. Presented at the International Conference on Engineering
Applications of Neural Networks, Springer, Cham, pp. 51–63.
https://doi.org/10.1007/978-3-319-44188-7_4
11. Demertzis, K., Iliadis, L., 2018a. A Computational Intelligence System Identifying
Cyber-Attacks on Smart Energy Grids, in: Modern Discrete Mathematics and Analysis,
27. Springer Optimization and Its Applications. Springer, Cham, pp. 97–116.
https://doi.org/10.1007/978-3-319-74325-7_5
12. Demertzis, K., Iliadis, L., 2018b. The Impact of Climate Change on Biodiversity: The
Ecological Consequences of Invasive Species in Greece, in: Handbook of Climate
Change Communication: Vol. 1, Climate Change Management. Springer, Cham, pp.
15–38. https://doi.org/10.1007/978-3-319-69838-0_2
13. Demertzis, K., Iliadis, L., 2017. Detecting invasive species with a bio-inspired semi-
supervised neurocomputing approach: the case of Lagocephalus sceleratus. Neural
Computing and Applications 28. https://doi.org/10/gbkgb7
14. Demertzis, K., Iliadis, L., 2016a. Bio-inspired Hybrid Intelligent Method for Detecting
Android Malware, in: Knowledge, Information and Creativity Support Systems,
Advances in Intelligent Systems and Computing. Springer, Cham, pp. 289–304.
https://doi.org/10.1007/978-3-319-27478-2_20
15. Demertzis, K., Iliadis, L., 2016b. Adaptive Elitist Differential Evolution Extreme
Learning Machines on Big Data: Intelligent Recognition of Invasive Species, in:
Advances in Big Data, Advances in Intelligent Systems and Computing. Presented at
the INNS Conference on Big Data, Springer, Cham, pp. 333–345.
https://doi.org/10.1007/978-3-319-47898-2_34
16. Demertzis, K., Iliadis, L., 2015a. A Bio-Inspired Hybrid Artificial Intelligence Framework
for Cyber Security, in: Computation, Cryptography, and Network Security. Springer,
Cham, pp. 161–193. https://doi.org/10.1007/978-3-319-18275-9_7
17. Demertzis, K., Iliadis, L., 2015b. SAME: An Intelligent Anti-malware Extension for
Android ART Virtual Machine, in: Computational Collective Intelligence, Lecture Notes
in Computer Science. Springer, Cham, pp. 235–245. https://doi.org/10.1007/978-3-
319-24306-1_23
18. Demertzis, K., Iliadis, L., 2015c. Evolving Smart URL Filter in a Zone-Based Policy
Firewall for Detecting Algorithmically Generated Malicious Domains, in: Statistical
Learning and Data Sciences, Lecture Notes in Computer Science. Presented at the
International Symposium on Statistical Learning and Data Sciences, Springer, Cham,
pp. 223–233. https://doi.org/10.1007/978-3-319-17091-6_17
19. Demertzis, K., Iliadis, L., 2015d. Intelligent Bio-Inspired Detection of Food Borne
Pathogen by DNA Barcodes: The Case of Invasive Fish Species Lagocephalus
Sceleratus, in: Engineering Applications of Neural Networks, Communications in
Computer and Information Science. Presented at the International Conference on
Engineering Applications of Neural Networks, Springer, Cham, pp. 89–99.
https://doi.org/10.1007/978-3-319-23983-5_9
20. Demertzis, K., Iliadis, L., 2014. Evolving Computational Intelligence System for
Malware Detection, in: Advanced Information Systems Engineering Workshops,
Lecture Notes in Business Information Processing. Presented at the International
Conference on Advanced Information Systems Engineering, Springer, Cham, pp. 322–
334. https://doi.org/10.1007/978-3-319-07869-4_30
21. Demertzis, K., Iliadis, L., 2013. A Hybrid Network Anomaly and Intrusion Detection
Approach Based on Evolving Spiking Neural Network Classification, in: E-Democracy,
Security, Privacy and Trust in a Digital World, Communications in Computer and
Information Science. Presented at the International Conference on e-Democracy,
Springer, Cham, pp. 11–23. https://doi.org/10.1007/978-3-319-11710-2_2
28. 22. Demertzis, Konstantinos, Iliadis, L., Anezakis, V.-D., 2017a. Commentary: Aedes
albopictus and Aedes japonicus—two invasive mosquito species with different
temperature niches in Europe. Front. Environ. Sci. 5. https://doi.org/10/gdp865
23. Demertzis, Kostantinos, Iliadis, L., Avramidis, S., El-Kassaby, Y.A., 2017. Machine
learning use in predicting interior spruce wood density utilizing progeny test
information. Neural Comput & Applic 28, 505–519. https://doi.org/10/gdp86z
24. Demertzis, Konstantinos, Iliadis, L., Spartalis, S., 2017b. A Spiking One-Class Anomaly
Detection Framework for Cyber-Security on Industrial Control Systems, in:
Engineering Applications of Neural Networks, Communications in Computer and
Information Science. Presented at the International Conference on Engineering
Applications of Neural Networks, Springer, Cham, pp. 122–134.
https://doi.org/10.1007/978-3-319-65172-9_11
25. Demertzis, K., Iliadis, L.S., Anezakis, V.-D., 2018a. An innovative soft computing system
for smart energy grids cybersecurity. Advances in Building Energy Research 12, 3–24.
https://doi.org/10/gdp862
26. Demertzis, K., Iliadis, L.S., Anezakis, V.-D., 2018b. Extreme deep learning in
biosecurity: the case of machine hearing for marine species identification. Journal of
Information and Telecommunication 0, 1–19. https://doi.org/10/gdwszn
27. Dimou, V., Anezakis, V.-D., Demertzis, K., Iliadis, L., 2018. Comparative analysis of
exhaust emissions caused by chainsaws with soft computing and statistical
approaches. Int. J. Environ. Sci. Technol. 15, 1597–1608. https://doi.org/10/gdp864
28. Anezakis, VD., Demertzis, K., Iliadis, L. et al. Evolving Systems (2017).
https://doi.org/10.1007/s12530-017-9196-6, Hybrid intelligent modeling of wild fires
risk, Springer.
29. Demertzis K., Anezakis VD., Iliadis L., Spartalis S. (2018) Temporal Modeling of Invasive
Species’ Migration in Greece from Neighboring Countries Using Fuzzy Cognitive Maps.
In: Iliadis L., Maglogiannis I., Plagianakos V. (eds) Artificial Intelligence Applications
and Innovations. AIAI 2018. IFIP Advances in Information and Communication
Technology, vol 519. Springer, Cham.
30. Konstantinos Rantos, George Drosatos, Konstantinos Demertzis, Christos Ilioudis and
Alexandros Papanikolaou. Blockchain-based Consents Management for Personal Data
Processing in the IoT Ecosystem. In proceedings of the 15th International Conference
on Security and Cryptography (SECRYPT 2018), part of ICETE, pages 572-577,
SCITEPRESS, Porto, Portugal, 26-28 July 2018.
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