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xubocheng

how do we select value of K for calculating NDCG score?

1

Hello, I am not sure If I fully understand how to select the value of k for getting accurate results. Can you please guide me on which factors should be...

Eku0194

delta = abs(single_dcgs[(i,j)] + single_dcgs[(j,i)] - single_dcgs[(i,i)] -single_dcgs[(j,j)])/IDCG for this line，you mean the ith document in true_scores should be position i ? after checking the data, it seems wrong, maybe...

aker218

iDCG = 0？

1

iDCG是否可以是0？这种情形应该怎么计算NDCG和lambda呢？

zxgx

lambdaMART

2

w[i] += rho * rho_complement * delta w[i] -= rho * rho_complement * delta 你好，我想问下这里w表示什么意思，后面好像也没有用到这个值

wwen101