posted @ 2025-11-12 10:46
ZhangZhihuiAAA
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An MLP (Multi-Layer Perceptron) classifier is a type of artificial neural network used for supervised learning, particularly for classification tasks.
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posted @ 2025-11-12 09:36
ZhangZhihuiAAA
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Gradient-Boosted Tree Regression (GBT Regression) — also called Gradient Boosted Regression Trees (GBRT) or Gradient Boosting Regression — is a powerf
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posted @ 2025-11-11 22:39
ZhangZhihuiAAA
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Great question — the difference between linear regression and generalized linear regression (GLM) is fundamental in statistical modeling. Let’s break
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posted @ 2025-11-11 20:12
ZhangZhihuiAAA
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非常好的问题。ROC 曲线（Receiver Operating Characteristic curve）和 PR 曲线（Precision-Recall curve）确实有密切的关系——它们都用于评估二分类模型的性能，但关注的重点不同，因此在不同场景下的表现和解读也不同。下面我们系统地对比一下它
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posted @ 2025-11-11 15:32
ZhangZhihuiAAA
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In PyTorch, a model can operate in two main modes: Training mode — activated by calling model.train() Evaluation mode — activated by calling model.eva
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posted @ 2025-11-11 00:48
ZhangZhihuiAAA
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What does numpy.random.randn() do? ChatGPT said: numpy.random.randn() is a function in NumPy that generates random numbers from a standard normal dist
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posted @ 2025-11-10 23:21
ZhangZhihuiAAA
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Good question 👍 — in Pandas, the method parameter in the DataFrame.interpolate() or Series.interpolate() function can take many different values depe
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posted @ 2025-11-09 21:26
ZhangZhihuiAAA
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The isna() and isnull() functions in Pandas are essentially identical in functionality. Both are used to detect missing or NA (Not Available) values i
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posted @ 2025-11-09 17:11
ZhangZhihuiAAA
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SELECT a.id, a.class, b.type FROM table1 AS a LEFT JOIN table2 AS b ON a.id = b.id AND a.class = 'A' AND b.type = 'B'; 以上SQL语句在执行时是先用id关联生成数据集再用条件a.cl
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posted @ 2025-11-03 17:44
ZhangZhihuiAAA
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