Question

我正在努力了解Solr MorelIke这是如何运作的。我已经完成的步骤 -

在schema.xml中我写过 -

field name =“path_exact”type =“string”indexed =“true”stored =“true”termVectors =“true”/＆gt;

field name =“title”type =“text_general”indexed =“true”stored =“true”multiValued =“true”termVectors =“true”/＆gt;

提到uniqueKey

path_exact
使用以下命令 -
在solr中创建索引
{“path_exact”：“id1”，“title”：“x1”}

{“path_exact”：“id2”，“title”：“x12”}
现在，当我试图点击下面的url然后它返回结果但我无法理解它究竟是什么意思？是否无法为id1和id2找到更多的项目？如果，是的，那么我在这里缺少什么？

的http：//：/？的solr / collection2 /选择Q = X1 *安培; MLT =真安培; mlt.fl =标题＆安培;重量= XML

结果 -

 <lst name="moreLikeThis">
     <result name="id1" numFound="0" start="0"/>
    <result name="id2" numFound="0" start="0"/>

感谢您的帮助！

Answer 1

我对你所做的事情感到有点困惑，但是如果你想设置MLT，你可以在你的核心目录中的solrconfig.xml中添加一个请求处理程序（我假设Solr 4.0和以上）。所以有些东西：

    <!-- More Like This -->
<requestHandler name="/mlt" class="solr.MoreLikeThisHandler">
    <lst name="defaults">
        <!--similar documents defaults-->
        <!--The fields to use for similarity-->
           <str name="mlt.fl">article_title, abstract_text</str>
        <!--Minimum Term Frequency - the frequency below which terms will be ignored in the source doc.-->
           <str name="mlt.mintf">2</str>
        <!--Minimum Document Frequency - the frequency at which words will be ignored which do not occur in at least this many docs.-->
           <str name="mlt.mintf">5</str>
        <!--minimum word length below which words will be ignored.-->
           <str name="mlt.mintf">0</str>
        <!--maximum word length above which words will be ignored.-->
           <str name="mlt.mintf">0</str>
        <!--maximum number of query terms that will be included in any generated query.-->
           <str name="mlt.mintf">25</str>
        <!--maximum number of query terms that will be included in any generated query.-->
           <str name="mlt.mintf">25</str>
    </lst>
</requestHandler>

然后只需在Solr上执行正常的HTTP请求：

http://localhost:8983/solr/mlt?q="myquery"

或者在向“/ select？”发送请求时设置“＆amp; mlt = true”标志。请求处理程序，例如solr wiki提供的示例：

http://localhost:8983/solr/select?q=apache&mlt=true&mlt.fl=manu,cat&mlt.mindf=1&mlt.mintf=1&fl=id,score

如何获得MoreLikeThis结果

1 个答案: