不爲也 比不能也

Queries and filters mergededitQueries and filters have been merged — all filter clauses are now query clauses. Instead, query clauses can now be used in query context or in filter context:query와 filter는 통합되었다. 모든 filter절은 이제 query절이다. 대신, 이제 query절은 query context 나 filter context 에서 사용된다.Query contextA query used in query context will calculate relevance scores and will not be cacheable. Query c..

Of course, the bool query isn’t restricted to combining simple one-word match queries. It can combine any other query, including other bool queries. It is commonly used to fine-tune the relevance _score for each document by combining the scores from several distinct queries.물론, bool query는, 간단한 단일 단어(one-word) match query를 조합하는데 있어, 제한이 없다. 다른 bool query는 물론이고, 다른 어떤 query와도 조합할 수 있다. 여러 별개의 que..

The function_score query is the ultimate tool for taking control of the scoring process. It allows you to apply a function to each document that matches the main query in order to alter or completely replace the original query _score.The function_score query는 score 계산 프로세스를 제어할 수 있는 최고의 도구이다. 원래 query의 _score 를 변경하거나, 완전히 대체하기 위하여, query에 일치하는 각 document에 function을 적용할 수 있다.In fact, you can appl..

Imagine that we have a website that hosts blog posts and enables users to vote for the blog posts that they like. We would like more-popular posts to appear higher in the results list, but still have the full-text score as the main relevance driver. We can do this easily by storing the number of votes with each blog post:사용자들이 자기가 좋아하는 블로그 게시물에 투표할 수 있는 기능이 있는 website를 가정해 보자. 결과 목록에서 더 높게 나타나는 ..

Let’s return to the problem that we were dealing with in Ignoring TF/IDF, where we wanted to scorevacation homes by the number of features that each home possesses. We ended that section by wishing for a way to use cached filters to affect the score, and with the function_score query we can do just that.Ignoring TF/IDF에서 다루었던 문제로 돌아가 보면, 여기에서는 각 여름용 별장이 가지고 있는 기능의 수로, 별장에 score를 계산하려 했다. score에 ..

Finally, if none of the function_score's built-in functions suffice, you can implement the logic that you need with a script, using the script_score function.마지막으로, function_score 의 내장 함수 어느 것도 충분하지 않다면, script_score function을 사용하여, script로 필요한 logic을 구현할 수 있다.For an example, let’s say that we want to factor our profit margin into the relevance calculation. In our business, the profit margin dep..