- Discriminant analysis can be used for classification or prediction, assigning objects to known groups based on independent variables. It attempts to distinguish between the categories of a dependent variable using metrics or dichotomous independents.
- Discriminant analysis works by creating discriminant functions - equations combining independents via coefficients - to produce discriminant scores predicting group membership. The number of functions needed equals one less than the number of groups.
- Functions are considered significant if they are able to distinguish between groups based on their relationship to one or more independents. Discriminant analysis is used in areas like marketing research, product usage, and direct marketing.
This presentation discusses the application of discriminant analysis in sports research. One can understand the steps involved in the analysis and testing its assumptions.
A tutorial on LDA that first builds on the intuition of the algorithm followed by a numerical example that is solved using MATLAB. This presentation is an audio-slide, which becomes self-explanatory if downloaded and viewed in slideshow mode.
This presentation discusses the application of discriminant analysis in sports research. One can understand the steps involved in the analysis and testing its assumptions.
A tutorial on LDA that first builds on the intuition of the algorithm followed by a numerical example that is solved using MATLAB. This presentation is an audio-slide, which becomes self-explanatory if downloaded and viewed in slideshow mode.
Discriminant analysis is a technique that is used by the researcher to analyze the research data when the criterion or the dependent variable is categorical and the predictor or the independent variable is the interval in nature. The term categorical variable means that the predictor variable is divided into a number of categories.
DA is typically used when the groups are already defined prior to the study.
The end result of DA is a model that can be used for the prediction of group memberships. This model allows us to understand the relationship between the set of selected variables and the observations. Furthermore, this model will enable one to assess the contributions of different variables.
It is very difficult to distinguish the differences between ANOVA and regression. This is because both terms have more similarities than differences. It can be said that ANOVA and regression are the two sides of the same coin.
It is on Conjoint Analysis presented by Radhika Gupta, Shivi Agarwal, Neha Arya, Neha Kasturia, Mudita Maheshwari, Dhruval Dholakia, Chinmay Jaggan Anmol Sahani and Madhusudan Partani of FMG-18A, FORE School of Management
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
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Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
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Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
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Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
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As AI technology is pushing into IT I was wondering myself, as an āinfrastructure container kubernetes guyā, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefitās both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
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Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
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Clients donāt know what they donāt know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clientsā needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
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Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
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In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
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Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
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Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
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After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more āmechanicalā approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
2. Discriminant Analysis
ā¢ Discriminant Analysis may be used for two
objectives:
ā Either we want to assess the adequacy of
classification, given the group memberships of the
objects under study; or
ā we wish to assign objects to one of a number of
(known) groups of objects.
ā¢ Discriminant Analysis may thus have a
descriptive or a predictive objective
3. Discriminant analysis
ā¢ Discriminant analysis is used to analyze relationships
between a non-metric dependent variable and metric or
dichotomous independent variables.
ā¢ Discriminant analysis attempts to use the independent
variables to distinguish among the groups or categories
of the dependent variable.
ā¢ The usefulness of a discriminant model is based upon its
accuracy rate, or ability to predict the known group
memberships in the categories of the dependent
variable.
4. Discriminant scores
ā¢ Discriminant analysis works by creating a new variable
called the discriminant function score which is used to
predict to which group a case belongs.
ā¢ The discriminant function is similar to a regression
equation in which the independent variables are
multiplied by coefficients and summed to produce a
score.
5. Number of functions
ā¢ If the dependent variable defines two groups, one statistically
significant discriminant function is required to distinguish the
groups; if the dependent variable defines three groups, two
statistically significant discriminant functions are required to
distinguish among the three groups; etc.
ā¢ If a discriminant function is able to distinguish among groups,
it must have a strong relationship to at least one of the
independent variables.
ā¢ The number of possible discriminant functions in an analysis
is limited to the smaller of the number of independent
variables or one less than the number of groups defined by
the dependent variable.
6. Discriminant Function
Zi = b1 X1 + b2 X2 + b3 X3 + ... + bn Xn
Where Z = discriminant score
b = discriminant weights
X = predictor (independent) variables
http://www.drvkumar.com/mr9/ 6
7. Determination of Significance
ā¢ Null Hypothesis: In the population, the group means the
discriminant function are equal
Ho : Ī¼ A = Ī¼ B
ā¢ Generally, predictors with relatively large standardized
coefficients contribute more to the discriminating power
of the function
ā¢ Discriminant loadings show the variance that the
predictor shares with the function
http://www.drvkumar.com/mr9/ 7
8. Uses of Discriminant Analysis
ā¢ Product research ā Distinguish between heavy, medium,
and light users of a product in terms of their
consumption habits and lifestyles
ā¢ Perception/Image research ā Distinguish between
customers who exhibit favorable perceptions of a store
or company and those who do not
ā¢ Advertising research ā Identify how market segments
differ in media consumption habits
ā¢ Direct marketing ā Identify the characteristics of
consumers who will respond to a direct marketing
campaign and those who will not
9. Steps in Discriminant Analysis
1. Form groups
2. Estimate discriminant function
3. Determine significance of function and variables
4. Interpret the discriminant function
5. Perform classification and validation
http://www.drvkumar.com/mr9/ 9
10. Example
X2
Back Yard Burger
Income ($)
Customers
Other Fast-Food
Restaurants
X1
Lifestyle-Eating Nutritious Meals
11. Classification of Multivariate Methods
Dependence One Number of None Interdependence
Methods Dependent Variables Methods
(Nonmetric) (Metric)
Dependent Variable Interval ā¢ Factor Analysis
Nominal
Level of Measurement or Ratio ā¢ Cluster Analysis
ā¢ Perceptual Mapping
Ordinal
ā¢ Multiple Regression
ā¢ Discriminant ā¢ ANOVA
Analysis ā¢ Spearmanās Rank ā¢ MANOVA
ā¢ Conjoint Correlation ā¢ Conjoint