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[FAQ Bot] UPDATE: np.linalg.inv(XTX) throws LinAlgError: Singular matrix — what does this - #431
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📝 FAQ UPDATE
Course: machine-learning-zoomcamp
Section: module-1 (This belongs to linear algebra basics in Module 1, where
np.linalg.inv, singular matrices, and related fixes are discussed.)Related Issue: #430
Question
np.linalg.inv(XTX) throws LinAlgError: Singular matrix — what does this mean?
Decision Rationale
The error is about linear algebra/NumPy used in Module 1. Existing FAQs cover the meaning in general terms, but this proposal adds practical troubleshooting (check rank and use the pseudo-inverse) that is not fully captured.
Placement Details
module-10a7e9c723a🤖 Generated by FAQ Bot
Closes #430