This document provides an outline and summaries for a two-day MATLAB workshop presented by Bhavesh Shah from 27-28 September 2012. The workshop will cover introductory topics such as what MATLAB is, the MATLAB screen interface, variables, arrays, matrices, built-in math functions, control structures, and toolboxes. It will also discuss more advanced topics like writing user-defined functions, neural networks, GUIs, and image processing. The goal is to introduce participants to the basics of using MATLAB for technical computing, modeling, simulation, and data analysis.
Workshop Tabelle con LaTeX: pacchetti e metodi
di Emmanuele Somma – Lapo Mori – Maurizio Himmelmann
Workshop c/o Area Ricerca Banca d'Italia
Sala Emeroteca
10 Gennaio 2008
This document provides an outline and summaries for a two-day MATLAB workshop presented by Bhavesh Shah from 27-28 September 2012. The workshop will cover introductory topics such as what MATLAB is, the MATLAB screen interface, variables, arrays, matrices, built-in math functions, control structures, and toolboxes. It will also discuss more advanced topics like writing user-defined functions, neural networks, GUIs, and image processing. The goal is to introduce participants to the basics of using MATLAB for technical computing, modeling, simulation, and data analysis.
Workshop Tabelle con LaTeX: pacchetti e metodi
di Emmanuele Somma – Lapo Mori – Maurizio Himmelmann
Workshop c/o Area Ricerca Banca d'Italia
Sala Emeroteca
10 Gennaio 2008
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
Creative operations teams expect increased AI use in 2024. Currently, over half of tasks are not AI-enabled, but this is expected to decrease in the coming year. ChatGPT is the most popular AI tool currently. Business leaders are more actively exploring AI benefits than individual contributors. Most respondents do not believe AI will impact workforce size in 2024. However, some inhibitions still exist around AI accuracy and lack of understanding. Creatives primarily want to use AI to save time on mundane tasks and boost productivity.
Organizational culture includes values, norms, systems, symbols, language, assumptions, beliefs, and habits that influence employee behaviors and how people interpret those behaviors. It is important because culture can help or hinder a company's success. Some key aspects of Netflix's culture that help it achieve results include hiring smartly so every position has stars, focusing on attitude over just aptitude, and having a strict policy against peacocks, whiners, and jerks.
PEPSICO Presentation to CAGNY Conference Feb 2024Neil Kimberley
PepsiCo provided a safe harbor statement noting that any forward-looking statements are based on currently available information and are subject to risks and uncertainties. It also provided information on non-GAAP measures and directing readers to its website for disclosure and reconciliation. The document then discussed PepsiCo's business overview, including that it is a global beverage and convenient food company with iconic brands, $91 billion in net revenue in 2023, and nearly $14 billion in core operating profit. It operates through a divisional structure with a focus on local consumers.
Content Methodology: A Best Practices Report (Webinar)contently
This document provides an overview of content methodology best practices. It defines content methodology as establishing objectives, KPIs, and a culture of continuous learning and iteration. An effective methodology focuses on connecting with audiences, creating optimal content, and optimizing processes. It also discusses why a methodology is needed due to the competitive landscape, proliferation of channels, and opportunities for improvement. Components of an effective methodology include defining objectives and KPIs, audience analysis, identifying opportunities, and evaluating resources. The document concludes with recommendations around creating a content plan, testing and optimizing content over 90 days.
How to Prepare For a Successful Job Search for 2024Albert Qian
The document provides guidance on preparing a job search for 2024. It discusses the state of the job market, focusing on growth in AI and healthcare but also continued layoffs. It recommends figuring out what you want to do by researching interests and skills, then conducting informational interviews. The job search should involve building a personal brand on LinkedIn, actively applying to jobs, tailoring resumes and interviews, maintaining job hunting as a habit, and continuing self-improvement. Once hired, the document advises setting new goals and keeping skills and networking active in case of future opportunities.
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.
The document provides career advice for getting into the tech field, including:
- Doing projects and internships in college to build a portfolio.
- Learning about different roles and technologies through industry research.
- Contributing to open source projects to build experience and network.
- Developing a personal brand through a website and social media presence.
- Networking through events, communities, and finding a mentor.
- Practicing interviews through mock interviews and whiteboarding coding questions.
Google's Just Not That Into You: Understanding Core Updates & Search IntentLily Ray
1. Core updates from Google periodically change how its algorithms assess and rank websites and pages. This can impact rankings through shifts in user intent, site quality issues being caught up to, world events influencing queries, and overhauls to search like the E-A-T framework.
2. There are many possible user intents beyond just transactional, navigational and informational. Identifying intent shifts is important during core updates. Sites may need to optimize for new intents through different content types and sections.
3. Responding effectively to core updates requires analyzing "before and after" data to understand changes, identifying new intents or page types, and ensuring content matches appropriate intents across video, images, knowledge graphs and more.
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
Creative operations teams expect increased AI use in 2024. Currently, over half of tasks are not AI-enabled, but this is expected to decrease in the coming year. ChatGPT is the most popular AI tool currently. Business leaders are more actively exploring AI benefits than individual contributors. Most respondents do not believe AI will impact workforce size in 2024. However, some inhibitions still exist around AI accuracy and lack of understanding. Creatives primarily want to use AI to save time on mundane tasks and boost productivity.
Organizational culture includes values, norms, systems, symbols, language, assumptions, beliefs, and habits that influence employee behaviors and how people interpret those behaviors. It is important because culture can help or hinder a company's success. Some key aspects of Netflix's culture that help it achieve results include hiring smartly so every position has stars, focusing on attitude over just aptitude, and having a strict policy against peacocks, whiners, and jerks.
PEPSICO Presentation to CAGNY Conference Feb 2024Neil Kimberley
PepsiCo provided a safe harbor statement noting that any forward-looking statements are based on currently available information and are subject to risks and uncertainties. It also provided information on non-GAAP measures and directing readers to its website for disclosure and reconciliation. The document then discussed PepsiCo's business overview, including that it is a global beverage and convenient food company with iconic brands, $91 billion in net revenue in 2023, and nearly $14 billion in core operating profit. It operates through a divisional structure with a focus on local consumers.
Content Methodology: A Best Practices Report (Webinar)contently
This document provides an overview of content methodology best practices. It defines content methodology as establishing objectives, KPIs, and a culture of continuous learning and iteration. An effective methodology focuses on connecting with audiences, creating optimal content, and optimizing processes. It also discusses why a methodology is needed due to the competitive landscape, proliferation of channels, and opportunities for improvement. Components of an effective methodology include defining objectives and KPIs, audience analysis, identifying opportunities, and evaluating resources. The document concludes with recommendations around creating a content plan, testing and optimizing content over 90 days.
How to Prepare For a Successful Job Search for 2024Albert Qian
The document provides guidance on preparing a job search for 2024. It discusses the state of the job market, focusing on growth in AI and healthcare but also continued layoffs. It recommends figuring out what you want to do by researching interests and skills, then conducting informational interviews. The job search should involve building a personal brand on LinkedIn, actively applying to jobs, tailoring resumes and interviews, maintaining job hunting as a habit, and continuing self-improvement. Once hired, the document advises setting new goals and keeping skills and networking active in case of future opportunities.
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.
The document provides career advice for getting into the tech field, including:
- Doing projects and internships in college to build a portfolio.
- Learning about different roles and technologies through industry research.
- Contributing to open source projects to build experience and network.
- Developing a personal brand through a website and social media presence.
- Networking through events, communities, and finding a mentor.
- Practicing interviews through mock interviews and whiteboarding coding questions.
Google's Just Not That Into You: Understanding Core Updates & Search IntentLily Ray
1. Core updates from Google periodically change how its algorithms assess and rank websites and pages. This can impact rankings through shifts in user intent, site quality issues being caught up to, world events influencing queries, and overhauls to search like the E-A-T framework.
2. There are many possible user intents beyond just transactional, navigational and informational. Identifying intent shifts is important during core updates. Sites may need to optimize for new intents through different content types and sections.
3. Responding effectively to core updates requires analyzing "before and after" data to understand changes, identifying new intents or page types, and ensuring content matches appropriate intents across video, images, knowledge graphs and more.
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...
Workshop Matlab BITS Base
1. BITS: Serie Storiche in Matlab
Emmanuele Somma
Supporto Informatico per l’Area Ricerche
Banca d’Italia
21 Gennaio 2008
E. Somma (SIA-BdI) WMBB 2008 21/01/2008 1/96
2. Piano della presentazione
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
E. Somma (SIA-BdI) WMBB 2008 21/01/2008 2/96
3. Le serie storiche in MATLAB
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
E. Somma (SIA-BdI) WMBB 2008 21/01/2008 3/96
4. Serie storica Insieme di informazioni omogenee riferite a momenti diversi
in successione temporale.
t1 v1
t2 v2
.
. .
.
. .
tn vn
E. Somma (SIA-BdI) WMBB 2008 21/01/2008 4/96
5. Serie storica Insieme di osservazioni numeriche riferite a momenti diversi
in successione temporale periodica.
tp v1
t2p v2
.
. .
.
. .
tnp vn
E. Somma (SIA-BdI) WMBB 2008 21/01/2008 5/96
6. L’oggetto timeseries
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
E. Somma (SIA-BdI) WMBB 2008 21/01/2008 6/96
7. Un array dei dati
Un array di dati
x = [-0.2 -0.3 13;
-0.1 -0.4 15;
NaN 2.8 17;
0.5 0.3 NaN;
-0.3 -0.1 15]
Un array casuale di dati
x = rand(4,4);
E. Somma (SIA-BdI) WMBB 2008 21/01/2008 7/96
8. Un paio di timeseries
ts_pos = timeseries(x(:,1:2), 1:5, ’name’, ’Position’)
getdatasamplesize(ts_pos)
ts_vel = timeseries(x(:,3), 1:5, ’name’, ’Velocity’);
getdatasamplesize(ts_vel)
E. Somma (SIA-BdI) WMBB 2008 21/01/2008 8/96
9. Altre timeseries
%% Import the sample data
load count.dat
count1 = timeseries(count(:,1), 1:24,’name’, ’intersection1’);
count2 = timeseries(count(:,2), 1:24,’name’, ’intersection2’);
count3 = timeseries(count(:,3), 1:24,’name’, ’intersection3’);
get(count1)
E. Somma (SIA-BdI) WMBB 2008 21/01/2008 9/96
10. Definizione delle unit` di misura
a
count1.DataInfo.Units = ’cars’;
count1.TimeInfo.Units = ’hours’;
count2.TimeInfo.Units = ’hours’;
count3.TimeInfo.Units = ’hours’;
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11. Definizione del metodo d’interpolazione
count1.DataInfo.Interpolation = tsdata.interpolation(’zoh’);
% zero-order hold
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12. Aggiunta di eventi
%% Construct and add the first event to all time series
e1 = tsdata.event(’AMCommute’,8);
% Construct the first event at 8 AM
e1.Units = ’hours’; % Specify the time units of the time
count1 = addevent(count1,e1); % Add the event to count1
count2 = addevent(count2,e1); % Add the event to count2
count3 = addevent(count3,e1); % Add the event to count3
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13. Aggiunta di eventi
%% Construct and add the second event to all time series
e2 = tsdata.event(’PMCommute’,18);
% Construct the first event at 6 PM
e2.Units = ’hours’; % Specify the time units of the time
count1 = addevent(count1,e2); % Add the event to count1
count2 = addevent(count2,e2); % Add the event to count2
count3 = addevent(count3,e2); % Add the event to count3
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14. Collezioni di timeseries
tsc = tscollection({count1 count2},’name’, ’count_coll’)
tsc = addts(tsc, count3)
tsc1 = removets(tsc1,’intersection3’)
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15. Ricampionamento della collezione
tsc1 = resample(tsc,1:2:24)
tsc1 = resample(tsc,1:0.5:24)
tsc1 = resample(tsc1,tsc1.Time)
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16. Modifica dei contenuti degli elementi della collezione
tsc1 = addsampletocollection(tsc1,’time’,3.25,...
’intersection1’,5)
tsc1 = delsamplefromcollection(tsc1,’index’,...
find(isnan(tsc1.intersection2.Data)));
tsc1 = addsampletocollection(tsc1,’time’,3.25,...
’intersection1’,5);
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17. Modifica dei contenuti degli elementi della collezione
plot(tsc1.intersection1); hold on;
plot(tsc1.intersection2)
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19. L’oggetto fints
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
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25. BITS - Bank of Italy Time Series
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
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26. L’oggetto tsmat
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
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27. Costruzione tsmat
TSMAT = tsmat(1980,1,12,count)
tsmat( macro index (year), micro index (period), frequency, d
Parametri
macro index double (used as integer)
micro index double (used as integer)
frequency numero di elementi in una divisione macro
1 Year
2 Semester
4 Quarter
12 Month
52 Week
365 Day
data matrix NOBS×NSERIES
SERIES colonne
OSSERV righe
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28. Esempio
A = tsmat(1980,1,12,rand(20,1))
Tsmat object
Size: [20 1]
Frequency: 12
Start: 1980 1
End: 1981 8
Labels: T1
B = tsmat(1980,1,12,rand(20,1))
BG = tsmat(1980,1,365,rand(220,1))
Tsmat object
Size: [220 1]
Frequency: 365
Start: Tue Jan-01-1980
End: Thu Aug-07-1980
Labels: T1
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29. Caricamento dati
load count.dat
TSC = tsmat(1980,1,365,count)
Tsmat object
Size: [24 3]
Frequency: 365
Start: Tue Jan-01-1980
End: Thu Jan-24-1980
Labels: T1 T2 T3
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30. Struttura
struct(TSC)
ans =
matdata: [24x3 double]
start_year: 1980
start_period: 1
freq: 365
last_year: 1980
last_period: 24
meta: [1x1 struct]
meta_cols: [1x1 struct]
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31. I Valori
TSC.matdata
ans =
11 11 9
7 13 11
14 17 20
11 13 9
43 51 69
38 46 76
61 132 186
[...]
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32. I metadati di base
.freq frequenza delle osservazioni
.start indice dell’oss. iniziale (anno,periodo)
.start year anno dell’oss. iniziale
.start period periodo dell’oss. iniziale
.last indice dell’oss. finale (calcolato)
.last year anno dell’oss. finale (calcolato)
.last period periodo dell’oss. finale (calcolato)
.range vettore degli indici iniziale e finale
.dates vettore delle date in formato num. Matlab
.matdata matrice dei valori della collezione
Ad es.
datestr(TSC.dates)
ans =
01-Jan-1980
02-Jan-1980
03-Jan-1980
[...]
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33. I metadati ’estesi’
.meta metadati della collezione
.meta cols metadati delle colonne
I metadati di colonna obbligatori
’label’ nome della serie
Ad es.
TSC.meta
ans =
release: 733425
TSC.meta_cols
ans =
label: {’T1’ ’T2’ ’T3’}
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34. Visualizzare una serie con tstab
tstab(S1 [, S2 ...]) dove S1,...,S2 sono oggetti tsmat
A=tsmat(1980,1,12,rand(5,1))
B=tsmat(1980,3,12,rand(5,1))
tstab(A,B)
tsStart: 1980 1
tsRelease: 18-Jan-2008
Frequency: 12 (monthly)
Date
T1 T1
18/01/08 18/01/08
1980-M-001 0.0377 NaN
1980-M-002 0.8852 NaN
1980-M-003 0.9133 0.2619
1980-M-004 0.7962 0.3354
1980-M-005 0.0987 0.6797
1980-M-006 NaN 0.1366
1980-M-007 NaN 0.7212
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35. Creazione della tsmat
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
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36. tsmat: Come si usa
>>
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37. tsmat: Come si usa
>> ts = tsmat(1980,1,12,rand(3,4))
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38. tsmat: Come si usa
>> ts = tsmat(1980,1,12,rand(3,4))
Tsmat object
Size: [3 4]
Start: 1980 1
End: 1980 3
Labels: T1 T2 T3 T4
>>
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39. tsmat: Come si usa
>> ts = tsmat(1980,1,12,rand(3,4))
Tsmat object
Size: [3 4]
Start: 1980 1
End: 1980 3
Labels: T1 T2 T3 T4
>> get(ts)
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40. tsmat: Come si usa
>> ts = tsmat(1980,1,12,rand(3,4))
Tsmat object
Size: [3 4]
Start: 1980 1
End: 1980 3
Labels: T1 T2 T3 T4
>> get(ts)
matdata: [3x4 double]
start_year: 1980
start_period: 1
freq: 12
last_year: 1980
last_period: 3
meta: [1x1 struct]
meta_cols: [1x1 struct]
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41. tsmat: Come si usa
>>
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42. tsmat: Come si usa
>> tstab(ts)
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43. tsmat: Come si usa
>> tstab(ts)
tsStart: 1980 1
tsRelease: 17-Jul-2007
Frequency: 12 (monthly)
Date
T1 T2 T3 T4
17/07/07 17/07/07 17/07/07 17/07/07
1980-M-001 0.6822 0.1509 0.8600 0.4966
1980-M-002 0.3028 0.6979 0.8537 0.8998
1980-M-003 0.5417 0.3784 0.5936 0.8216
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44. tsmat: Come si usa
>> tstab(ts)
tsStart: 1980 1
tsRelease: 17-Jul-2007
Frequency: 12 (monthly)
Date LABELS
T1 T2 T3 T4
17/07/07 17/07/07 17/07/07 17/07/07
1980-M-001 0.6822 0.1509 0.8600 0.4966
1980-M-002 0.3028 0.6979 0.8537 0.8998
1980-M-003 0.5417 0.3784 0.5936 0.8216
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45. tsmat: Come si usa
>> tstab(ts)
tsStart: 1980 1
tsRelease: 17-Jul-2007 RELEASES
Frequency: 12 (monthly)
Date
T1 T2 T3 T4
17/07/07 17/07/07 17/07/07 17/07/07
1980-M-001 0.6822 0.1509 0.8600 0.4966
1980-M-002 0.3028 0.6979 0.8537 0.8998
1980-M-003 0.5417 0.3784 0.5936 0.8216
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49. tsmat Distribuzione dei rilasci su tutte le colonne
ts = tsmat(1980,1,12,rand(3,4), ...
{’PRICE’, ’STOCK’, ’EXCHANGE’, ’UNIT’}, ...
’01-Jan-2002’ );
tstab(ts)
tsStart: 1980 1
tsRelease: 18-Jul-2007
Frequency: 12 (monthly)
Date
PRICE STOCK EXCHANGE UNIT
01/01/02 01/01/02 01/01/02 01/01/02
1980-M-001 0.4374 0.1359 0.3987 0.8686
1980-M-002 0.4712 0.5325 0.3584 0.6264
1980-M-003 0.1493 0.7258 0.2853 0.2412
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50. Indicizzazione per l’accesso
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
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51. Indicizzazione
Metadati fondamentali tramite ’.’ (es. TSC.start)
Osservazione tramite ’()’ (es. TSC([2:5, [1:end])
Lead/Lag tramite ’{}’ (es. TSC{-1})
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52. Accesso ai metadati: ’.’
.freq frequenza delle osservazioni
.start indice dell’oss. iniziale (anno,periodo)
.start year anno dell’oss. iniziale
.start period periodo dell’oss. iniziale
.last indice dell’oss. finale (calcolato)
.last year anno dell’oss. finale (calcolato)
.last period periodo dell’oss. finale (calcolato)
.range vettore degli indici iniziale e finale
.dates vettore delle date in formato num. Matlab
.matdata matrice dei valori della collezione
.meta dizionario dei metadati di collezione
.meta cols dizionari dei metadati di colonna
Ad es.
datestr(TSC.dates)
ans =
01-Jan-1980
02-Jan-1980
03-Jan-1980 Somma (SIA-BdI)
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53. Accesso alle osservazioni: ’()’
Doppio vettore di interi (2 elementi)
righe colonne
osservazioni serie
TSC( [2:5], [1:end])
tsStart: 1980 2
tsRelease: 19-Jan-2008
Frequency: 365 (daily)
Date
T1 T2 T3
19/01/08 19/01/08 19/01/08
1980-D-002 02-Jan-1980 7.0000 13.0000 11.0000
1980-D-003 02-Jan-1980 14.0000 17.0000 20.0000
1980-D-004 02-Jan-1980 11.0000 13.0000 9.0000
1980-D-005 02-Jan-1980 43.0000 51.0000 69.0000
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54. Esempio: Una osservazione di tutte le serie nella collezione
righe colonne
osservazioni serie
TSC( 1, [1:end])
tstab(TSC1)
tsStart: 1980 1
tsRelease: 19-Jan-2008
Frequency: 365 (daily)
Date
T1 T2 T3
19/01/08 19/01/08 19/01/08
1980-D-001 01-Jan-1980 11.0000 11.0000 9.0000
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55. Esempio: Tutte le osservazioni di una serie della collezione
righe colonne
osservazioni serie
TSC( [1:end], 2)
tstab(TSC1)
tsStart: 1980 1
tsRelease: 19-Jan-2008
Frequency: 365 (daily)
Date
T1
19/01/08
1980-D-001 01-Jan-1980 11.0000
1980-D-002 01-Jan-1980 7.0000
1980-D-003 01-Jan-1980 14.0000
1980-D-004 01-Jan-1980 11.0000
[...]
1980-D-021 01-Jan-1980 35.0000
1980-D-022 01-Jan-1980 11.0000
1980-D-023 01-Jan-1980 13.0000
1980-D-024 01-Jan-1980 10.0000
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56. Accesso alle osservazioni: ’()’
Quattro Interi e un indice (5 elementi)
anno periodo anno periodo colonne
iniziale finale
TSC( 1986, 1, 1996, 1, ’:’)
TSC( 1986, 1, 1996, 1, [2 3])
tsStart: 1980 2
tsRelease: 19-Jan-2008
Frequency: 365 (daily)
Date
T1 T2 T3
19/01/08 19/01/08 19/01/08
1980-D-002 02-Jan-1980 7.0000 13.0000 11.0000
1980-D-003 02-Jan-1980 14.0000 17.0000 20.0000
1980-D-004 02-Jan-1980 11.0000 13.0000 9.0000
1980-D-005 02-Jan-1980 43.0000 51.0000 69.0000
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57. Operazione di Lead e Lag: ’{}’
TSC = tsmat(1980,1,365,count(:,1))
tstab(TSC1,TSC1{-1},TSC1{1})
% == tstab(TSC,tslag(TSC,1),tslag(TSC,-1))
tsStart: 1979 365
tsRelease: 18-Jan-2008
Frequency: 365 (daily)
Date T1 T1 T1
18/01/08 18/01/08 18/01/08
1979-D-365 31-Dec-1979 NaN NaN 11.0000
1980-D-001 31-Dec-1979 11.0000 NaN 7.0000
1980-D-002 31-Dec-1979 7.0000 11.0000 14.0000
[...]
1980-D-023 31-Dec-1979 13.0000 11.0000 10.0000
1980-D-024 31-Dec-1979 10.0000 13.0000 NaN
1980-D-025 31-Dec-1979 NaN 10.0000 NaN
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58. Riorganizzazione
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
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61. Concatenazione orizzontale
cc=[aa,bb]
Tsmat object
Size: [8 8]
Frequency: 4
Start: 1979 1
End: 1980 4
Labels: T1 T2 T3 T4 T1 T2 T3 T4
tstab(cc)
tsStart: 1979 1
tsRelease: 19-Jan-2008
Frequency: 4 (quarterly)
Date
T1 T2 [...] T3 T4
19/01/08 19/01/08 [...] 19/01/08 19/01/08
1979-Q-001 NaN NaN [...] 9.0000 13.0000
1979-Q-002 NaN NaN [...] 10.0000 14.0000
1979-Q-003 NaN NaN [...] 11.0000 15.0000
1979-Q-004 NaN NaN [...] 12.0000 16.0000
1980-Q-001 -1.0000 -5.0000 [...] NaN NaN
1980-Q-002 -2.0000 -6.0000 [...] NaN NaN
1980-Q-003 -3.0000 -7.0000 [...] NaN NaN
1980-Q-004 -4.0000 -8.0000 [...] NaN NaN
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63. Concatenazione verticale
cc=[aa{-2};bb]
Tsmat object
Size: [8 4]
Frequency: 4
Start: 1979 1
End: 1980 4
Labels: T1 T2 T3 T4
tstab(cc)
tsStart: 1979 1
tsRelease: 19-Jan-2008
Frequency: 4 (quarterly)
Date
T1 T2 T3 T4
19/01/08 19/01/08 19/01/08 19/01/08
1979-Q-001 1.0000 5.0000 9.0000 13.0000
1979-Q-002 2.0000 6.0000 10.0000 14.0000
1979-Q-003 3.0000 7.0000 11.0000 15.0000
1979-Q-004 4.0000 8.0000 12.0000 16.0000
1980-Q-001 NaN NaN NaN NaN
1980-Q-002 NaN NaN NaN NaN
1980-Q-003 -1.0000 -5.0000 -9.0000 -13.0000
1980-Q-004 -2.0000 -6.0000 -10.0000 -14.0000
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64. Concatenazione verticale non adiacente
cc=[aa;bb{-1}]
??? Error using ==> tsmat.extend
"FillDateBeforeLastDate"
Error in ==> <a href="error:/Users/exedre/Work/Matlab/bi/toolboxes/bits2/@t
self = extend(a, self, [ a.start_year a.start_period ], fill_date);
Error in ==> <a href="error:/Users/exedre/Work/Matlab/bi/toolboxes/bits2/@t
res = extend(res,varargin{i},nan,true);
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65. extend Unione delle serie cn il controllo della sovrapposizione
>> ts1 = tsmat(1980,1,12,rand(7,1));
>> ts2 = tsmat(1980,6,12,rand(4,1));
>> ts=extend(ts1,ts2)
>> tstab(ts,ts1,ts2)
[...] T1 T1 T1
05/09/07 05/09/07 05/09/07
1980-M-001 0.4457 0.4457 NaN
1980-M-002 0.9388 0.9388 NaN
1980-M-003 0.6338 0.6338 NaN
1980-M-004 0.9297 0.9297 NaN
1980-M-005 0.0629 0.0629 NaN
1980-M-006 0.0104 0.3069 0.0104
1980-M-007 0.1678 0.9498 0.1678
1980-M-008 0.7553 NaN 0.7553
1980-M-009 0.8338 NaN 0.8338
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66. extend Unione delle serie cn il controllo della sovrapposizione
>> ts=extend(ts1,ts2,[1980 7])
>> tstab(ts,ts1,ts2)
[...] T1 T1 T1
05/09/07 05/09/07 05/09/07
1980-M-001 0.4457 0.4457 NaN
1980-M-002 0.9388 0.9388 NaN
1980-M-003 0.6338 0.6338 NaN
1980-M-004 0.9297 0.9297 NaN
1980-M-005 0.0629 0.0629 NaN
1980-M-006 0.3069 0.3069 0.0104
1980-M-007 0.1678 0.9498 0.1678
1980-M-008 0.7553 NaN 0.7553
1980-M-009 0.8338 NaN 0.8338
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67. extend Unione di serie non contigue
>> ts1=tsmat(1980,1,12,rand(5,1))
>> ts2=tsmat(1980,7,12,rand(5,1));
[...] T1 T1
1980-M-001 0.6059 NaN
1980-M-002 0.5179 NaN
1980-M-003 0.9429 NaN
1980-M-004 0.7412 NaN
1980-M-005 0.7011 NaN
1980-M-006 NaN NaN
1980-M-007 NaN 0.7447
1980-M-008 NaN 0.8738
1980-M-009 NaN 0.9641
1980-M-010 NaN 0.9819
1980-M-011 NaN 0.9186
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68. extend Unione di serie non contigue
>> ts1=tsmat(1980,1,12,rand(5,1))
>> ts2=tsmat(1980,7,12,rand(5,1));
[...] T1 T1
1980-M-001 0.6059 NaN
1980-M-002 0.5179 NaN
1980-M-003 0.9429 NaN
1980-M-004 0.7412 NaN
1980-M-005 0.7011 NaN
1980-M-006 NaN NaN
1980-M-007 NaN 0.7447
1980-M-008 NaN 0.8738
1980-M-009 NaN 0.9641
1980-M-010 NaN 0.9819
1980-M-011 NaN 0.9186
>> ts=extend(ts1,ts2)
??? Error using ==> tsmat.extend at 130
"TimeseriesCannotBeLinked"
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69. extend Unione serie non contigue
>> ts=extend(ts1,ts2,nan,true)
T1 T1 T1
05/09/07 05/09/07 05/09/07
1980-M-001 0.6059 0.6059 NaN
1980-M-002 0.5179 0.5179 NaN
1980-M-003 0.9429 0.9429 NaN
1980-M-004 0.7412 0.7412 NaN
1980-M-005 0.7011 0.7011 NaN
1980-M-006 NaN NaN NaN
1980-M-007 0.7447 NaN 0.7447
1980-M-008 0.8738 NaN 0.8738
1980-M-009 0.9641 NaN 0.9641
1980-M-010 0.9819 NaN 0.9819
1980-M-011 0.9186 NaN 0.9186
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70. Operazioni tra le tsmat
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
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71. La differenza tra struttura e oggetto
Struttura Oggetto
s = struct() o = class() Creazione
s.propriet´
a o.propriet´
a Accesso
s.campo = valore o.campo = valore Riempimento
funzione(s) metodo(o) Funzione/Metodo
s.dati = m.dati + n.dati Operazioni tra strutture
s = m + n Operazioni tra oggetti
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72. Operazioni sulle serie (senza esclusione dei nan)
max(A)
min(A)
mean(A)
median(A)
std(A)
sum(A)
var(A)
abs(A)
ceil(A)
TODO: iqr(A)
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73. Operazioni sulle serie con esclusione dei nan
nanmax(A)
nanmin(A)
nanmean(A)
nanmedian(A)
nanstd(A)
nansum(A)
nanva(A)
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74. Operazioni tra le serie
tstab(A,B, A*10)
tstab(A,B, A+B)
tstab(A,B, A-B)
tstab(A,B, A*B)
tstab(A,B, A./B)
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80. Operazioni e Funzioni
Operazione F unzione
gt(A,B) A>B
ge(A,B) A≥B
lt(A,B) A<B
le(A,B) A≤B
ne(A,B) A=B
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81. Determinazione dei valori
Operazione F unzione
isnan = NaN
isfinite =∞
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82. Introduciamo dei missing in testa e in coda
TSC([1:3],[1:3])=NaN; tstab(TSC)
TSC([24],[1:3])=NaN; tstab(TSC)
Stringiamo l’intervallo di definizione della serie ai valori non missing
TSCn=notnanrange(TSC)
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83. Lag e Lead
TSC = tsmat(1980,1,365,count(:,1))
tstab(TSC,tslag(TSC,1),tslag(TSC,-1))
tsStart: 1979 365
tsRelease: 18-Jan-2008
Frequency: 365 (daily)
Date
T1 T1 T1
18/01/08 18/01/08 18/01/08
1979-D-365 31-Dec-1979 NaN NaN 11.0000
1980-D-001 31-Dec-1979 11.0000 NaN 7.0000
1980-D-002 31-Dec-1979 7.0000 11.0000 14.0000
[...]
1980-D-023 31-Dec-1979 13.0000 11.0000 10.0000
1980-D-024 31-Dec-1979 10.0000 13.0000 NaN
1980-D-025 31-Dec-1979 NaN 10.0000 NaN
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84. Gestione dei Metadati
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
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87. Un metadato notevole: release
Il metadato release indica la data in cui la serie ` e
presa in considerazione (?!?)
Non viene utilizzata in alcun modo nei calcoli ma ` e
molto importante nelle operazioni di vintage dei dati
La release della singola serie (ovvero
ts.meta colsj.release), se presente, verr` a
utilizzata per indicare il vintage dei dati, altrimenti si
utilizzera la release dell’intera collezione
(ts.meta.release), nel caso in cui non sia presente
neppure questo (errore) si utilizzer` la data corrente.
a
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88. Esempio
A.meta.release
ans =
733426
>> datestr(A.meta.release)
ans =
19-Jan-2008
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90. Metadati di colonna
TSC.meta_cols
ans =
label: {’T1’ ’T2’ ’T3’}
Metadati di colonna
I metadati di colonna sono ospitati in una struttura i cui campi sono
cell-array.
`
E uno strumento del linguaggio Matlab un po’ contorto a cui bisogna
fare attenzione e che provoca un bel po’ di problemi.
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93. Metadati di colonna
getcolmeta(TSC,2,’label’)
ans =
’T2’
getcolmeta(TSC,2,’release’,today)
ans =
733426
FCM = getfullcolmeta(TSC)
1x3 struct array with fields:
label
FCM(1).label
ans =
’T1’
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94. Metadati di colonna
getcolmeta(TSC,2,’label’)
ans =
’T2’
getcolmeta(TSC,2,’release’,today)
ans =
733426
FCM = getfullcolmeta(TSC)
1x3 struct array with fields:
label
FCM(1).label
ans =
’T1’
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95. Metadati di colonna
getcolmeta(TSC,2,’label’)
ans =
’T2’
getcolmeta(TSC,2,’release’,today)
ans =
733426
FCM = getfullcolmeta(TSC)
1x3 struct array with fields:
label
FCM(1).label
ans =
’T1’
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97. Plot
1 Le serie storiche in MATLAB
L’oggetto timeseries
L’oggetto fints
2 BITS - Bank of Italy Time Series
L’oggetto tsmat
Creazione della tsmat
Indicizzazione per l’accesso
Riorganizzazione
Operazioni tra le tsmat
Gestione dei Metadati
Plot
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98. Esempio di plot
aa=tsmat(1980,1,12,randn(120,1));
bb=filter(1,[1 -0.9],aa);
h=plot([aa,bb]);
legend(’aa tsmat’,’filtered tsmat bb’);
% Let’s add a moving average of the bb tsmat
cc=mave(bb,12);
plot([aa,bb,cc]);
legend(’aa tsmat’,’filtered tsmat bb’,’12 terms moving average
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99. Esempio di plot
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