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CodeSignal

Dimensionality Reduction with Feature Selection

via CodeSignal

Overview

In this course, you'll learn specialized techniques for feature selection and extraction to improve machine learning models. Through practical applications on a synthetic dataset, you'll discover how to identify and remove low-variance features, use correlation with the target variable, and apply advanced selection methods to refine your datasets for optimal efficiency and effectiveness.

Syllabus

  • Unit 1: Mastering Variance-Based Feature Selection with VarianceThreshold in Python
    • Unveiling High Variance Features in Synthetic Data
    • Adjusting the Variance Threshold
    • Setting the Variance Threshold
    • Cosmic Code Crafting: Feature Selection with Variance Threshold
  • Unit 2: Unveiling the Power of Univariate Feature Selection with SelectKBest in Python
    • Unveiling the Most Informative Features with Chi-Square Test
    • Expanding Our Feature Universe
    • Uncovering the Stars: Selecting Features with Chi-Square
    • Implementing SelectKBest for Feature Selection
  • Unit 3: Mastering Feature Selection with Mutual Information in Python
    • Visualizing Wine Data with Mutual Information
    • Refining Feature Selection with SelectPercentile
    • Computing Mutual Relationships in Features
    • Wine Dataset Feature Selection with Mutual Information
  • Unit 4: Mastering Feature Selection with Recursive Feature Elimination in Python
    • Unveiling the Top Features with Recursive Feature Elimination
    • Adjusting Feature Selection with RFE
    • Navigating the Stars of Feature Selection
    • Navigating the Stars: Recursive Feature Elimination
  • Unit 5: Mastering Feature Selection with SelectFromModel in Scikit-learn
    • Revealing Key Features in California Housing Prices
    • Adjusting Feature Selection Threshold
    • Implanting SelectFromModel in the Voyage of Feature Selection

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