Questions tagged [ranking]

Ranking is ordering data from highest to lowest or *vice versa.* For questions about *constructing* scores to use in ranking, please use the "valuation" tag, too.

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21
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2answers
22k views

How fit pairwise ranking models in XGBoost?

As far as I know, to train learning to rank models, you need to have three things in the dataset: label or relevance group or query id feature vector For example, the Microsoft Learning to Rank ...
4
votes
1answer
1k views

Can feature importance change a lot between models?

I have a random forest classifier and Multinomial Naive Bayes. For feature importance, I used gini index for random forest and for Multinomial Naive Bayes I used the coefficients of each feature. Then ...
1
vote
1answer
5k views

Cosine similarity between query and document confusion

I am going through the Manning book for Information retrieval. Currently I am at the part about cosine similarity. One thing is not clear for me. Let's say that I have the tf idf vectors for the ...
1
vote
1answer
66 views

Learning comparisons

Suppose I want (the machine) to learn the ">" function, and my training set is a collection of pairs of numbers $(n_1, n_2)$ with the output True if $n_1 > n_2$ ...