SoftRank: Optimising Non-Smooth Rank Metrics
author:
Michael Taylor,
Microsoft Research, Cambridge
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| Slides | |
| 0:00 | SoftRank Optimising Non-Smooth Rank Metrics |
| 0:18 | IR Metrics are Not Smooth: NDCG |
| 3:28 | Previous Proxy Training Objectives |
| 6:48 | SoftRank Approach |
| 9:36 | Rank Distribution |
| 11:10 | Pairwise Contest Approximation |
| 14:39 | Rank Distribution Recursion |
| 17:04 | Effect of Pairwise Contest Trick |
| 17:49 | SoftNDCG |
| 19:58 | Experiments |
| 21:16 | SoftRank Results |
| 22:20 | Generalization Study |
| 23:24 | Discount Study |
| 24:30 | Conclusions |
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