[FAQ Bot] NEW: Is there a faster alternative to manually encoding categorical columns t

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✨ FAQ NEW

Course: machine-learning-zoomcamp
Section: module-3 (Categorical encoding and DictVectorizer are explicitly part of Module 3 (classification/churn feature engineering), so this belongs in module-3.)
Related Issue: #428

Question

Is there a faster alternative to manually encoding categorical columns that triggers a pandas performance warning when repeatedly adding many columns?

Decision Rationale

This proposes a specific workaround for an issue arising during categorical encoding/one-hot style expansion that is not directly covered by the existing FAQs. It also mentions the performance warning mechanism and alternative approaches (e.g., DictVectorizer) aligned with Module 3’s classification feature engineering.

Placement Details

• Section ID: module-3
• Sort Order: End of section
• Filename Slug: faster-categorical-encoding-performance-warning

⚠️ Warnings

• No existing FAQ in SEARCH_RESULTS directly addresses pandas performance warnings from loop-based column additions for categorical encoding; placing in module-3 based on DictVectorizer/one-hot encoding relevance.

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🤖 Generated by FAQ Bot

Closes #428