Retrieval method and device

Abstract

A search method and apparatus. A specific embodiment of the search method includes: finding a set of first time-effective search queries from a search log; selecting search queries meeting one of the following selection requirements as candidate time-effective search queries: included in the search log and semantically associated with the first time-effective search queries in the set of first time-effective search queries; included in the search log and containing a combination of preset keywords; processing the candidate time-effective search queries to obtain second time-effective search queries; performing search with a second time-effective search query, when a search query entered by the user matches the second time-effective search query. The present disclosure achieves obtaining the second time-effective search queries from the search queries of the search log based on the identified first time-effective search queries, thus raising the identification recall rate and further improving the identification effect of the time-effective search queries, on the condition that the identification accuracy is ensured in the identification process of the time-effective search queries.

Description

technical field [0001] The present application relates to the computer field, in particular to the search field, especially to a search method and device. Background technique [0002] When searching, users often expect to use the input search formula to obtain search results that are closer to the current time. The formula is called the time-sensitive search formula. By identifying the time-sensitive search formula in advance, when the search formula input by the user contains the recognized time-sensitive search formula, the time-sensitive search formula can be used for retrieval, so that the returned search results are more accurate. [0003] In known technologies, time-sensitive search formulas are identified mainly through user behavior identification and language model identification. Among them, the user behavior identification method is to identify the search formula whose query frequency in the search log is greater than the preset number threshold at a certain po...

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Problems solved by technology

Then, when the above method is to improve the recognition accuracy, it is necessary to increase the corresponding threshold

At the same time, increasing the corresponding threshold will cause a decrease in the recognition recall rate, which in turn will affect the recognition effect of the time-sensitive search method.

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