Web-Scale Semantic Ranking
نویسندگان
چکیده
Semantic ranking models go beyond keyword matching to score documents based on closeness in meaning to the query. The use of semantic ranking in Web search has been limited due to the high cost of these models. To address this issue, we have designed and implemented a new Web-scale ranking system that enables us to integrate semantic ranking techniques into a commercial search engine. We have explored several types of models and will describe our implementation of translation models (TM) in this paper. The experiments demonstrate that these models significantly improve relevance over our existing baseline system. Our new ranking system is deployed online and is currently serving many millions of users.
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