2613机器学习困难derivationmedium
L2-Regularized Region Update 7
题目
In one boosting region, choose a constant update gamma to minimize sum_{i in R} (r_i-gamma)^2 + lambda gamma^2. Let S = sum_{i in R} r_i and n = |R|. Derive gamma.
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提交作答时记录，用于后续平均用时统计。
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