Solr 忽略短语查询中第三位置的标记

Question

在Solr（4.10.3）中，我有一个查询（不使用dismax或edismax）

t:"past surgical cardiovascular system"

查询调试输出

"rawquerystring": "t:"past surgical cardiovascular system"",
"querystring": "t:"past surgical cardiovascular system"",
"parsedquery": "MultiPhraseQuery(t:"(ex former formerly previous prior past) (surgery surg surgical operative)")",
"parsedquery_toString": "t:"(ex former formerly previous prior past) (surgery surg surgical operative)"",

似乎solr从第三位置开始完全忽略了令牌。我有点懊恼，因为这是我在 8 小时调查后第一次注意到这一点。我错过了什么？如何强制 solr 考虑第三个和第四个令牌？

如果有帮助，t 字段的类型为：

    <fieldType name="text_en_splitting" class="solr.TextField"
        positionIncrementGap="100" autoGeneratePhraseQueries="false">
        <analyzer type="index">
            <!-- <tokenizer class="solr.WhitespaceTokenizerFactory" /> -->
            <tokenizer class="solr.PatternTokenizerFactory" pattern="s*[{}[]|():;,]s*|b[-/+]b|s+[&amp;+-]s+|(?:b')?s+|.(?=z|s)" />
            <!-- in this example, we will only use synonyms at query time <filter
                class="solr.SynonymFilterFactory" synonyms="index_synonyms.txt" ignoreCase="true"
                expand="false"/> -->
            <!-- Case insensitive stop word removal. add enablePositionIncrements=true
                in both the index and query analyzers to leave a 'gap' for more accurate
                phrase queries. -->
            <filter class="solr.LimitTokenCountFilterFactory" maxTokenCount="10"/>
            <filter class="solr.ClassicFilterFactory" />
            <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
            <!-- <filter class="solr.WordDelimiterFilterFactory"
                generateWordParts="1" generateNumberParts="1" catenateWords="1"
                catenateNumbers="1" catenateAll="0" splitOnCaseChange="1" /> -->
            <filter class="solr.LowerCaseFilterFactory" />
            <filter class="solr.EnglishPossessiveFilterFactory" />
            <filter class="solr.KeywordMarkerFilterFactory" protected="protwords.txt" />
            <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
            <filter class="solr.EnglishMinimalStemFilterFactory" />
        </analyzer>
        <analyzer type="query">
            <!-- <tokenizer class="solr.WhitespaceTokenizerFactory" /> -->
            <tokenizer class="solr.PatternTokenizerFactory" pattern="s*[{}[]|():;,]s*|b[-/+]b|s+[&amp;+-]s+|(?:b')?s+|.(?=z|s)" />
            <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true" />
            <filter class="solr.LimitTokenCountFilterFactory" maxTokenCount="10"/>
            <filter class="solr.ClassicFilterFactory" />
            <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
            <!-- <filter class="solr.WordDelimiterFilterFactory"
                generateWordParts="1" generateNumberParts="1" catenateWords="0"
                catenateNumbers="0" catenateAll="0" splitOnCaseChange="1" /> -->
            <filter class="solr.LowerCaseFilterFactory" />
            <filter class="solr.EnglishPossessiveFilterFactory" />
            <filter class="solr.KeywordMarkerFilterFactory" protected="protwords.txt" />
            <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
            <filter class="solr.EnglishMinimalStemFilterFactory" />
            <!-- <filter class="solr.PorterStemFilterFactory" /> -->
        </analyzer>
    </fieldType>

我认为 solr 中的某个地方有一个错误。

我运行了一个不同的查询，并在解析的查询中获得了所有令牌：

"rawquerystring": "t:"acute myocardial infarction surgical"",
"querystring": "t:"acute myocardial infarction surgical"",
"parsedquery": "MultiPhraseQuery(t:"(acute aqt) (myocardial myocrd) (infarct infarction nfrct) (surgery surg surgical)")",
"parsedquery_toString": "t:"(acute aqt) (myocardial myocrd) (infarct infarction nfrct) (surgery surg surgical)"",

如果我在查询前面加上"过去"，那么 tokes 就会被删除

"rawquerystring": "t:"past acute myocardial infarction surgical"",
"querystring": "t:"past acute myocardial infarction surgical"",
"parsedquery": "MultiPhraseQuery(t:"(ex former formerly previous prior past) (acute aqt) (myocardial myocrd)")",
"parsedquery_toString": "t:"(ex former formerly previous prior past) (acute aqt) (myocardial myocrd)"",

分析

页面没有给我太多细节，因为它独立分析令牌

Answer 1

我终于发现了问题：在使用同义词扩展后，我正在使用solr.LimitTokenCountFilterFactory将查询限制为 10 个令牌。解决方案是删除此过滤器

Answer 2

您有一个极其复杂的查询分析器链。幸运的是，您可以使用 Web 管理 UI 中的"分析"屏幕准确了解其中发生的情况。

因此，您可以将短语放在那里（在查询处理的右侧），并逐步查看单词会发生什么。

例如，这应该告诉您某些术语是否在其中一层中被意外吞噬。