Exam PA · Data Transformations and Unsupervised Learning Techniques · Free Lesson

Create features from existing data that may add value.

Free SOA Exam PA (Predictive Analytics) lesson in Data Transformations and Unsupervised Learning Techniques. 13 min read, ~2,024 words.

Variables versus features. A variable is what the source system recorded: a timestamp, a dollar amount, a text label. A feature is the input you actually give the model, engineered so the signal is easy to extract. Every feature starts as one or more variables, but not every variable is...

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