Solr-如何获取查询的多个建议 [英] Solr - How to obtain multiple suggestions for a query
问题描述
在配置文件solrconfig.xml
中,有一个参数可以调整容差,以便即使query
& suggestion
大吗?
In the configuration file solrconfig.xml
, is there a parameter to adjust tolerance in order to have multiple suggestions even if the number of different letters between the query
& the suggestion
is large?
在我的solrconfig.xml
建议配置中,我有:
In my solrconfig.xml
suggestion configuration, I have :
spellcheck
search component
:
<lst name="spellchecker">
<str name="name">default</str>
<str name="field">title</str>
<str name="classname">solr.DirectSolrSpellChecker</str>
<!-- the spellcheck distance measure used, the default is the internal levenshtein -->
<str name="distanceMeasure">internal</str>
<!-- minimum accuracy needed to be considered a valid spellcheck suggestion -->
<float name="accuracy">0.5</float>
<!-- the maximum #edits we consider when enumerating terms: can be 1 or 2 -->
<int name="maxEdits">2</int>
<!-- the minimum shared prefix when enumerating terms -->
<int name="minPrefix">1</int>
<!-- maximum number of inspections per result. -->
<int name="maxInspections">5</int>
<!-- minimum length of a query term to be considered for correction -->
<int name="minQueryLength">4</int>
<!-- maximum threshold of documents a query term can appear to be considered for correction -->
<float name="maxQueryFrequency">0.01</float>
<!-- uncomment this to require suggestions to occur in 1% of the documents
<float name="thresholdTokenFrequency">.01</float>
-->
</lst>
<!-- a spellchecker that can break or combine words. See "/spell" handler below for usage -->
<lst name="spellchecker">
<str name="name">wordbreak</str>
<str name="classname">solr.WordBreakSolrSpellChecker</str>
<str name="field">title</str>
<str name="combineWords">true</str>
<str name="breakWords">true</str>
<int name="maxChanges">10</int>
</lst>
和/spell
request handler
:
<requestHandler name="/spell" class="solr.SearchHandler" startup="lazy">
<lst name="defaults">
<str name="df">title</str>
<!-- Solr will use suggestions from both the 'default' spellchecker
and from the 'wordbreak' spellchecker and combine them.
collations (re-written queries) can include a combination of
corrections from both spellcheckers -->
<str name="spellcheck.dictionary">default</str>
<str name="spellcheck.dictionary">wordbreak</str>
<str name="spellcheck">on</str>
<str name="spellcheck.extendedResults">true</str>
<str name="spellcheck.count">10</str>
<str name="spellcheck.alternativeTermCount">1000</str>
<str name="spellcheck.maxResultsForSuggest">5</str>
<str name="spellcheck.collate">true</str>
<str name="spellcheck.collateExtendedResults">true</str>
<str name="spellcheck.maxCollationTries">10</str>
<str name="spellcheck.maxCollations">5</str>
<str name="spellcheck.onlyMorePopular">false</str>
</lst>
<arr name="last-components">
<str>spellcheck</str>
</arr>
</requestHandler>
我的问题是,查询总是只会得到一个建议.例如,对于查询renou
,即使有其他词更接近,我也希望得到renault
作为建议.
My issue is that I'm always getting only one suggestion by query. For example, for the query renou
, I want to get renault
as a suggestion, even if there are other words which are closer.
推荐答案
对于您而言,最好使用 Suggester
而不是Spellchecker
,因为Spellchecker
仅生成1和2个字母变化的候选. Suggester
返回单词,该单词以您的查询开头.要建议拼写更改的单词,您应该使用FuzzySuggester
.
For your case it is better to use Suggester
instead of a Spellchecker
, because the Spellchecker
generates candidates only for 1 and 2 letter changes. Suggester
returns words, which begins with your query. To suggest words with spelling changes, you should use FuzzySuggester
.
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