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Lindsey

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senior data scientist

Lindsey is a senior data scientist working on AI, causal inference, and data products. She has built models for fraud detection, uplift modeling, and LLM applications.

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Now that your data is cleaned and explored, it’s time to build your first model. This week is all about making something that works — it doesn’t have to be perfect. You’ll train a basic model (regression or classification) and evaluate performance using simple metrics, then start thinking about iteration and improvement.