I spent 9 years at Amazon figuring out when metrics actually mean something.

Causal inference, experimentation, and GenAI evaluation — written down for people doing the same work. Joining Taskrabbit as Senior Data Scientist in April 2026.

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Machine Learning·Oct 2026Latest

Linear Regression: Drawing the Best Line

Fit a line by hand and in code, prove why it's the best line, test every assumption, correct for biased data, and answer any regression question an interviewer asks.

Oct 2026Optimization: How Models Actually Learn→Oct 2026Logistic Regression and Classification→Oct 2026Generalization: Overfitting, Bias–Variance and Regularization→Oct 2026Evaluation: Measuring Models Honestly→

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