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                                            Haowei Zhang

Something Wrong with decay_diff ?

@ownnaruto you could refer https://github.com/haowei01/pytorch-examples/blob/master/ranking/LambdaRank.py#L13 for the formula: ``` lambda += - N / (1 + exp(Si - Sj)) * (gain(rel_i) - gain(rel_j)) * |1/log(pos_i+1) - 1/log(pos_j+1)| ``` I will...