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我想对数据库中包含的 Twitter 评论进行标记化并应用停用词过滤器，但 Process Document 什么也不做。我究竟做错了什么？

我的目标是应用这些过滤器，但将评论保留在行中，而不是单个词向量。

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.3.015">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="5.3.015" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="read_database" compatibility="5.3.015" expanded="true" height="60" name="Server Connection (2)" width="90" x="45" y="30">
        <parameter key="connection" value="sqlserver2014"/>
        <parameter key="query" value="select top 60 tweetid,content from [Tweets General]"/>
        <enumeration key="parameters"/>
      </operator>
      <operator activated="true" class="text:data_to_documents" compatibility="5.3.002" expanded="true" height="60" name="Data to Documents" width="90" x="246" y="30">
        <parameter key="select_attributes_and_weights" value="true"/>
        <list key="specify_weights"/>
      </operator>
      <operator activated="true" class="text:process_documents" compatibility="5.3.002" expanded="true" height="94" name="Process Documents" width="90" x="447" y="30">
        <process expanded="true">
          <operator activated="true" class="text:tokenize" compatibility="5.3.002" expanded="true" height="60" name="Tokenize (3)" width="90" x="246" y="75"/>
          <connect from_port="document" to_op="Tokenize (3)" to_port="document"/>
          <connect from_op="Tokenize (3)" from_port="document" to_port="document 1"/>
          <portSpacing port="source_document" spacing="0"/>
          <portSpacing port="sink_document 1" spacing="0"/>
          <portSpacing port="sink_document 2" spacing="0"/>
        </process>
      </operator>
      <connect from_op="Server Connection (2)" from_port="output" to_op="Data to Documents" to_port="example set"/>
      <connect from_op="Data to Documents" from_port="documents" to_op="Process Documents" to_port="documents 1"/>
      <connect from_op="Process Documents" from_port="example set" to_port="result 1"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
    </process>
  </operator>
</process>
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1 回答 1

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您需要在运算符之前将任何名义类型的属性转换为文本类型Data to Documents。操作员Nominal to Text会这样做。您还需要将选项设置select attributes and weights为 false in，Data to Documents因为我认为您的设置将取消选择所有内容。

于 2014-07-05T09:37:38.737 回答