Learning sort Algorithm (ii): Ranking SVM for pairwise method

Learning sort Algorithm (ii): Ranking SVM for pairwise method

1. The basic idea of the Pairwise method

Pairwise considers the relationship of document order. It will be the same as a query related documents together, the two of any document to form a pair. Our research is based on this pair document pair.

2. Ranking SVM

In the test, we put all the possible pair in a query, and then entered into the learning model to get the relative order of each pair. All search results can be sorted according to the projections.

The typical pairwise method has ranking SVM. Microsoft Daniel Tie a slide in the ranking SVM, as shown in:

In addition to the ranking SVM method, pairwise methods are Ranknet, Lambdarank, and so on, they will be described in the following blog.

Learning sort Algorithm (ii): Ranking SVM for pairwise method