Feature Engineering for Machine Learning

  1. Text Feature Engineering
    1. Basic Text Features
      1. Text Length
        1. Word Count
          1. Character Count
            1. Sentence Count
              1. Paragraph Count
                1. Average Word Length
                  1. Average Sentence Length
                  2. Text Preprocessing
                    1. Tokenization
                      1. Lowercasing
                        1. Punctuation Removal
                          1. Stop Word Removal
                            1. Stemming
                              1. Lemmatization
                              2. Bag-of-Words Representations
                                1. Binary Bag-of-Words
                                  1. Count Vectorization
                                    1. Term Frequency
                                      1. Document Frequency
                                      2. TF-IDF Features
                                        1. Term Frequency Calculation
                                          1. Inverse Document Frequency
                                            1. TF-IDF Weighting
                                              1. Sublinear TF Scaling
                                              2. N-gram Features
                                                1. Unigrams
                                                  1. Bigrams
                                                    1. Trigrams
                                                      1. Character N-grams
                                                        1. Skip-grams
                                                        2. Advanced Text Features
                                                          1. Part-of-Speech Tags
                                                            1. Named Entity Recognition
                                                              1. Sentiment Scores
                                                                1. Readability Metrics
                                                                  1. Language Detection
                                                                    1. Text Similarity Measures

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                                                                  8. Temporal Feature Engineering

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                                                                  10. Geospatial Feature Engineering