Question about `position_bins`

acbull / Unbiased_LambdaMart

Code for WWW'19 "Unbiased LambdaMART: An Unbiased Pairwise Learning-to-Rank Algorithm", which is based on LightGBM

MIT License

225 stars 50 forks source link

Question about `position_bins` #16

Open robhowley opened 3 years ago

robhowley commented 3 years ago

Hi,

I'm trying to understand the implementation differences between this repo and lightgbm. Does

position_bins = 12       : this denotes the maximum positions taken into account.

effectively serve the same as lambdarank_truncation_level in the newer releases of lightgbm? Looks like they each cap the number of results from a given query we look at. Wanted to confirm.