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4.4. Boosting
Lucene uses boosting to attach more importance to specific fields or documents over others. Lucene differentiates between index and search-time boosting.
4.4.1. Static Index Time Boosting 复制链接链接已复制到粘贴板!
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The
@Boost
annotation is used to define a static boost value for an indexed class or property. This annotation can be used within @Field
, or can be specified directly on the method or class level.
In the following example:
- the probability of Essay reaching the top of the search list will be multiplied by 1.7.
@Field.boost
and@Boost
on a property are cumulative, therefore the summary field will be 3.0 (2 x 1.5), and more important than the ISBN field.- The text field is 1.2 times more important than the ISBN field.
Example 4.7. Different ways of using @Boost