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Data Science and Machine Learning

Notes and Projects of the "Data Science and Machine Learning" Course from Udemy

01 - Linear Regression

02 - Gradient Descent

Gradient Descent I

  • Simple Cost function
  • Slope and Derivates
  • Gradient Descent function

Gradient Descent II

  • Multiple Minima vs Initial Guess & Advanced Functions

Gradient Descent III

  • Divergence and Overflow

Gradient Descent IV

  • Learning Rate

Gradient Descent V

  • Data visualization and 3D Charts

Gradient Descent VI

  • Partial Derivatives & Symbolic Computation
  • Batch Gradient Descent with SymPy
  • Graphing 3D Gradient Descent & Adv Numpy Arrays

Gradient Descent VII

  • MSE

Gradient Descent VIII

  • 3D MSE

03 - Multivariable Regression

Multivariable Regression I

  • Gather Data points and features
  • Data exploration with Pandas DataFrame

Multivariable Regression II

  • Visualizating data
  • Histograms, Distributions and Bar Charts

Multivariable Regression III

  • Histograms

Multivariable Regression IV

  • Descriptive Statistics

Multivariable Regression V

  • Correlation

Multivariable Regression VI

  • Split training and test dataset
  • Multivariable Regression
  • Data Transformations
  • Regression using log prices

Multivariable Regression VII

  • Testing for Multicollinearity
  • Model Simplification and BIC
  • Residuals and Residual Plots

04 - Bayes Classifier

Bayes Classifier I

  • Reading files
  • Email body extraction
  • Data Cleaning
  • Locate empty mails
  • Add document IDs
  • Remove System file entries from DataFrame

Bayes Classifier II

  • Spam Massages visualized

Bayes Classifier III

  • Natural Language Processing
  • Wordclouds

Bayes Classifier IV

  • Generator function
  • Missing Data
  • Tokenisation
  • Generate features and sparse Matrix