Removing it will help reduce the index file, improve efficiency, and increase the hit rate.

These words appear in a large number of articles, but they do not contain any key information. The invalid words mentioned here refer to the 'of', 'The', the words '的', '地' and other words in Chinese. Its function is to divide a string into words according to certain rules and remove invalid words in it. The user extracts the required Field from the found Document as needed.ģ Some concepts that need to be known Analyzer is an analyzer. Search the index for the processed keywords to find the corresponding Document. User provides search keywords, which are processed by the analyzer. Write the index to the memory, which can be memory or disk. Source string of the writing process is first processed by the analyzer, including: word segmentation, divided into words removal of stopword (optional).Īdd the information needed in the source to each Field of the Document, index the fields that need to be indexed, and store the fields that need to be stored. The so-called input is to write, that is, the source (essentially a string) you provide is written into the index or deleted from the index the so-called out is to read, that is, to provide users with full-text search services, allowing users to locate the source by keywords. The service provided by Lucene actually consists of two parts: one in and one out.

So it is not as easy to use as or google Desktop, it just provides a tool for you to implement these products. Lucene Lucene is a full-text search framework, not an application product.

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