AutoX_Recommend, 排序模型, Lightgbm binary

代码结构可以参考: https://github.com/4paradigm/AutoX/blob/master/autox/autox_recommend/recall_and_rank/ranker/ranker.py

The issue references a specific file for code structure: autox/autox_recommend/recall_and_rank/ranker/ranker.py. Start by examining this file to understand the existing ranking model implementation. Research LightGBM binary classification for recommendation systems. 'Done' likely means implementing or integrating a LightGBM-based binary ranking model into the AutoX recommendation pipeline.

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