https://dailypypy.org/tags/columntransformer/ Recent content in ColumnTransformer on 每日拍拍 Hugo -- gohugo.io zh-tw © 2026 每日拍拍 Sun, 06 Sep 2026 11:08:00 +0800 155076163427069952 154825760438254592 https://dailypypy.org/learn/sklearn-pipeline-columntransformer/ Sun, 06 Sep 2026 11:08:00 +0800 https://dailypypy.org/learn/sklearn-pipeline-columntransformer/ <!--- 1440x768 prompt: masterpiece, best quality, highres, clean anime illustration, japanese anime style, soft shading, flat color design, 1girl, black hair, green eyes, white off-shoulder shirt, black short skirt, bust shot, front-facing eye-level view, arms crossed, confident gentle smile, looking at viewer, pale peach background, subtle floating connected blank geometric blocks and soft branching pathways without symbols or text, neat composition, detailed eyes, cute and smart vibe, minimal background, polished illustration, no text negative prompt: worst quality, bad eye, bad hand, extra limbs, manga, multiple views, monochrome, text, signature dedup note: The 155-post inventory contains no scikit-learn tutorial. The nearest item, ../python-uv/, only names scikit-learn in an installation example and does not discuss estimators, preprocessing, Pipeline, ColumnTransformer, cross-validation, or leakage. This article fills that missing end-to-end tabular ML workflow and does not repeat the NumPy, pandas reporting, PyTorch, or MLX articles. source check: Reviewed against the current official scikit-learn documentation on 2026-09-06 for Pipeline, ColumnTransformer, cross-validation, common leakage pitfalls, nested parameter names, feature names, and model persistence. ---> <p>機器學習 Demo 最常見的樣子，是先把整份資料補值、標準化、轉成 one-hot，最後才切 train/test。</p>