feat(training): 添加 LightGBM LambdaRank 排序学习功能

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新增基于 LambdaRank 的排序学习模型，用于股票排序预测任务：
- 实现 LightGBMLambdaRankModel 模型类，支持分位数标签转换
- 提供完整的训练流程和 NDCG 评估指标
- 添加实验 Notebook 演示排序学习全流程

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liaozhaorun

2026-03-10 22:23:44 +08:00

parent f1811815e7

commit e6c3a918c7

6 changed files with 2366 additions and 366 deletions

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