cbalint13 commented on PR #14468:
URL: https://github.com/apache/tvm/pull/14468#issuecomment-1496441262

   @tqchen , additionally to my response to the request in the previous 
message: 
   
   > > Likely we might want to move away from the MAP metric, and use other 
metric instead, either regression metric or pair-wise ranking.
   > 
   > * Apparently this proposal works, tunning finds good kernels, but the real 
impact is hard to measure (on personal side).
   > 
   > Another quick idea for now is to add condition of binarization to xgboost 
>=1.7.5 version, keeping the old behaviour.
   
   * If binarization is too **steep** , a simple (but recursive) way would be 
the 
[PASCAL](https://en.wikipedia.org/wiki/Evaluation_measures_(information_retrieval)#Average_precision)
 trick to avg/split into 11 levels: 
   
   
![image](https://user-images.githubusercontent.com/3974360/229888215-3c9c9a1d-3843-42d5-b4f6-2206b0d95eca.png)
   
   


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