如何获得MoreLikeThis结果

Question

我正在努力理解Solr MorelIkeThis是如何工作的。我做过的步骤-

1. 在schema.xml里我写过-

字段name="path_exact“type=字符串”indexed=“真”stored=“真”termVectors=“真”/>“

字段name=标题“type="text_general”indexed=“真”stored=“真”multiValued=“真”termVectors=“真”/>“

1. 提到的uniqueKeypath_exact
2. 使用以下命令在solr中创建索引- {"path_exact":"id1"，"title":"x1"} {"path_exact":"id2"，"title":"x12"}
3. 现在，当我试图点击下面的url时，它会返回结果，但我无法理解它到底意味着什么？id1和id2找不到这个项目吗？如果，是的，那我在这里错过了什么？ &mlt=true&mlt.fl=title&wt=xml

结果-

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

​

谢谢你的帮忙!

Answer 1

我有点不明白您到底做了什么，但是如果您想要设置MLT，可以向核心目录中的solrconfig.xml添加一个请求处理程序(我假设Solr4.0和更高版本)。因此，一些类似于：

    <!-- 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>
        <!--Minimum 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>

然后对Solr执行一个正常的HTTP请求：

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

或者在向“&mlt=true？”发送请求时设置“/select”标志？请求处理程序，例如solr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