What is the LambdaWeights for lambdarank? about ranking

[xuanhuiwang]

The flow looks right.

The LambdaRank weight is already implemented in tf-ranking. You can set the smooth_fraction=1.0 to use it.

To create a loss, a better way is to use the factory method: https://github.com/tensorflow/ranking/blob/master/tensorflow_ranking/python/losses.py#L53.

In that sense, you don't need to create a new DCGLambdaWeight, unless you want to try something else.

Also, when lambda_weight is enabled, you may need to re-tune your learning rate.

[MoyanZitto]

@xuanhuiwang
Thanks for your kindly reply, it is really helpful.