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An Overview of Learning to Rank

An Overview of Learning to Rank

An Overview of Learning to Rank

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纵 线<br />

• 训 练 数 据 怎 么 来 <br />

• 单 点 标 注 (pointwise)<br />

• 两 两 标 注 (pairwise)<br />

• 列 表 标 注 (listwise)<br />

• 模 型 如 何 学 习 <br />

• 监 督 学 习 (supervised learning)*<br />

• 无 监 督 学 习 (unsupervised learning)<br />

‣ 多 作 为 特 征 使 用<br />

• 半 监 督 学 习 (semi-supervised learning)<br />

• 如 何 评 估 学 习 效 果 <br />

• Mean Average Precision (MAP) *<br />

• Normalized Discount Cumulative Gain (NDCG)*<br />

• Mean Reciprocal <strong>Rank</strong> (MRR)<br />

• Winners Take All (WTA)<br />

• Kendall’s Tau<br />

• ……

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