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Evaluation criteria for search engines
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Application background The code to achieve several evaluation criteria search engines, including DCG@K, P@K, NDCG@K, RR@K, ERR@K these five categories of evaluation criteria, this code is mainly based on the RankLib evaluation criteria code to show the shape of Scala, compared with the RankLib evaluation code, the code is short, readable, portability, Key Technology Scala implementation of this paper, the DCG@K, P@K, NDCG@K, RR@K, ERR@K these five types of evaluation criteria, with the RankLib in the assessment formula to maintain the same
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