ML Algorithms in Data Science and AI
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Questions and Answers

What is the primary goal of regression analysis?

To model the relationship between a continuous dependent variable and one or more independent variables.

What is the main challenge in regression analysis?

Handling outliers, which can shift the best-fit line and distort the model.

What is the primary goal of classification?

To assign accurate labels to new data.

What is the main difference between regression and classification?

<p>Regression deals with continuous dependent variables, while classification deals with discrete labels or classes.</p> Signup and view all the answers

When is logistic regression used?

<p>When the dependent variable (target) is binary.</p> Signup and view all the answers

What is the difference between logistic regression and linear regression?

<p>Logistic regression is used for binary dependent variables, while linear regression is used for continuous dependent variables.</p> Signup and view all the answers

What is the purpose of decision trees and logistic regression in classification?

<p>To predict the category or class of an input based on prior observations.</p> Signup and view all the answers

What is the main advantage of using logistic regression?

<p>It is suitable for binary dependent variables.</p> Signup and view all the answers

How does the presence of outliers affect the accuracy of a regression model?

<p>Outliers can shift the best-fit line and distort the model, making proper handling of outliers crucial to maintain the accuracy and reliability of the regression model.</p> Signup and view all the answers

What is the key characteristic of the dependent variable in logistic regression?

<p>The dependent variable (target) is binary.</p> Signup and view all the answers

What is the main objective of classification algorithms, such as logistic regression and decision trees?

<p>To assign accurate labels to new data.</p> Signup and view all the answers

What is a common limitation of regression analysis?

<p>Regression analysis is sensitive to outliers.</p> Signup and view all the answers

What is the primary difference between regression and classification problems?

<p>Regression predicts continuous values, while classification predicts discrete labels or categories.</p> Signup and view all the answers

Study Notes

Machine Learning Algorithms

  • Three main categories of ML algorithms: Classification, Regression, and Clustering
  • Examples of algorithms: Logistic Regression, Linear Regression, K-Means, SVM, Naïve-Bayes, Nearest Neighbor, Decision Trees, Random Forests, and Hidden Markov Model

Regression Problem

  • Regression analysis models the relationship between a continuous dependent variable and one or more independent variables
  • Goal: find the best-fit line that minimizes the difference between observed and predicted values
  • Regression is sensitive to outliers, which can distort the model
  • Proper handling of outliers is crucial for accuracy and reliability of the regression model

Classification Problem

  • Classification predicts the category or class of an input based on prior observations, producing discrete labels (e.g., "spam" or "not spam")
  • Goal: assign accurate labels to new data
  • Popular algorithms: logistic regression and decision trees
  • Classification involves input features and class labels (target) in the training dataset

Machine Learning Algorithms

  • Three main categories of ML algorithms: Classification, Regression, and Clustering
  • Examples of algorithms: Logistic Regression, Linear Regression, K-Means, SVM, Naïve-Bayes, Nearest Neighbor, Decision Trees, Random Forests, and Hidden Markov Model

Regression Problem

  • Regression analysis models the relationship between a continuous dependent variable and one or more independent variables
  • Goal: find the best-fit line that minimizes the difference between observed and predicted values
  • Regression is sensitive to outliers, which can distort the model
  • Proper handling of outliers is crucial for accuracy and reliability of the regression model

Classification Problem

  • Classification predicts the category or class of an input based on prior observations, producing discrete labels (e.g., "spam" or "not spam")
  • Goal: assign accurate labels to new data
  • Popular algorithms: logistic regression and decision trees
  • Classification involves input features and class labels (target) in the training dataset

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Description

This quiz covers various machine learning algorithms, including classification, regression, and clustering techniques, used in data science and AI applications.

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