在RapidMiner中获取具有最高值的属性名称

Question

我想生成一个新属性，其中存储具有最高值的属性名称。我的目标与此问题类似（Returning the column header of max value on per row basis）。

Answer 1

这非常复杂，涉及将示例集合中的每个示例进行转置，排序以查找最大值，将属性的名称提取到宏中，并将该值设置为原始示例集。

以下是您可以复制的过程。

<?xml version="1.0" encoding="UTF-8" standalone="no"?> 
<process version="6.5.000"> 
    <context> 
    <input/> 
    <output/> 
    <macros/> 
    </context> 
    <operator activated="true" class="process" compatibility="6.5.000" expanded="true" name="Process"> 
    <parameter key="logverbosity" value="init"/> 
    <parameter key="random_seed" value="2001"/> 
    <parameter key="send_mail" value="never"/> 
    <parameter key="notification_email" value=""/> 
    <parameter key="process_duration_for_mail" value="30"/> 
    <parameter key="encoding" value="SYSTEM"/> 
    <parameter key="parallelize_main_process" value="false"/> 
    <process expanded="true"> 
     <operator activated="true" class="generate_data" compatibility="6.5.000" expanded="true" height="60" name="Generate Data" width="90" x="112" y="75"> 
     <parameter key="target_function" value="random"/> 
     <parameter key="number_examples" value="100"/> 
     <parameter key="number_of_attributes" value="5"/> 
     <parameter key="attributes_lower_bound" value="-10.0"/> 
     <parameter key="attributes_upper_bound" value="10.0"/> 
     <parameter key="use_local_random_seed" value="false"/> 
     <parameter key="local_random_seed" value="1992"/> 
     <parameter key="datamanagement" value="double_array"/> 
     </operator> 
     <operator activated="true" class="generate_attributes" compatibility="6.5.000" expanded="true" height="76" name="Generate Attributes" width="90" x="246" y="75"> 
     <list key="function_descriptions"> 
      <parameter key="maximum" value="&quot;unknown&quot;"/> 
     </list> 
     <parameter key="keep_all" value="true"/> 
     </operator> 
     <operator activated="true" class="loop_examples" compatibility="6.5.000" expanded="true" height="76" name="Loop Examples" width="90" x="380" y="75"> 
     <parameter key="iteration_macro" value="example"/> 
     <parameter key="parallelize_example_process" value="false"/> 
     <process expanded="true"> 
      <operator activated="true" class="filter_example_range" compatibility="6.5.000" expanded="true" height="76" name="Filter Example Range" width="90" x="112" y="30"> 
      <parameter key="first_example" value="%{example}"/> 
      <parameter key="last_example" value="%{example}"/> 
      <parameter key="invert_filter" value="false"/> 
      </operator> 
      <operator activated="true" class="select_attributes" compatibility="6.5.000" expanded="true" height="76" name="Select Attributes" width="90" x="112" y="165"> 
      <parameter key="attribute_filter_type" value="subset"/> 
      <parameter key="attribute" value=""/> 
      <parameter key="attributes" value="id|label|maximum"/> 
      <parameter key="use_except_expression" value="false"/> 
      <parameter key="value_type" value="attribute_value"/> 
      <parameter key="use_value_type_exception" value="false"/> 
      <parameter key="except_value_type" value="time"/> 
      <parameter key="block_type" value="attribute_block"/> 
      <parameter key="use_block_type_exception" value="false"/> 
      <parameter key="except_block_type" value="value_matrix_row_start"/> 
      <parameter key="invert_selection" value="true"/> 
      <parameter key="include_special_attributes" value="true"/> 
      </operator> 
      <operator activated="true" class="transpose" compatibility="6.5.000" expanded="true" height="76" name="Transpose" width="90" x="246" y="165"/> 
      <operator activated="true" class="sort" compatibility="6.5.000" expanded="true" height="76" name="Sort" width="90" x="380" y="165"> 
      <parameter key="attribute_name" value="att_1"/> 
      <parameter key="sorting_direction" value="decreasing"/> 
      </operator> 
      <operator activated="true" class="extract_macro" compatibility="6.5.000" expanded="true" height="60" name="Extract Macro" width="90" x="514" y="165"> 
      <parameter key="macro" value="max"/> 
      <parameter key="macro_type" value="data_value"/> 
      <parameter key="statistics" value="average"/> 
      <parameter key="attribute_name" value="id"/> 
      <parameter key="example_index" value="1"/> 
      <list key="additional_macros"/> 
      </operator> 
      <operator activated="true" class="subprocess" compatibility="6.5.000" expanded="true" height="94" name="Subprocess" width="90" x="648" y="30"> 
      <parameter key="parallelize_nested_process" value="false"/> 
      <process expanded="true"> 
       <connect from_port="in 1" to_port="out 1"/> 
       <portSpacing port="source_in 1" spacing="0"/> 
       <portSpacing port="source_in 2" spacing="0"/> 
       <portSpacing port="source_in 3" spacing="0"/> 
       <portSpacing port="sink_out 1" spacing="0"/> 
       <portSpacing port="sink_out 2" spacing="0"/> 
      </process> 
      </operator> 
      <operator activated="true" class="set_data" compatibility="6.5.000" expanded="true" height="76" name="Set Data" width="90" x="782" y="30"> 
      <parameter key="example_index" value="%{example}"/> 
      <parameter key="count_backwards" value="false"/> 
      <parameter key="attribute_name" value="maximum"/> 
      <parameter key="value" value="%{max}"/> 
      <list key="additional_values"/> 
      </operator> 
      <connect from_port="example set" to_op="Filter Example Range" to_port="example set input"/> 
      <connect from_op="Filter Example Range" from_port="example set output" to_op="Select Attributes" to_port="example set input"/> 
      <connect from_op="Filter Example Range" from_port="original" to_op="Subprocess" to_port="in 1"/> 
      <connect from_op="Select Attributes" from_port="example set output" to_op="Transpose" to_port="example set input"/> 
      <connect from_op="Transpose" from_port="example set output" to_op="Sort" to_port="example set input"/> 
      <connect from_op="Sort" from_port="example set output" to_op="Extract Macro" to_port="example set"/> 
      <connect from_op="Extract Macro" from_port="example set" to_op="Subprocess" to_port="in 2"/> 
      <connect from_op="Subprocess" from_port="out 1" to_op="Set Data" to_port="example set input"/> 
      <connect from_op="Set Data" from_port="example set output" to_port="example set"/> 
      <portSpacing port="source_example set" spacing="0"/> 
      <portSpacing port="sink_example set" spacing="0"/> 
      <portSpacing port="sink_output 1" spacing="0"/> 
     </process> 
     </operator> 
     <connect from_op="Generate Data" from_port="output" to_op="Generate Attributes" to_port="example set input"/> 
     <connect from_op="Generate Attributes" from_port="example set output" to_op="Loop Examples" to_port="example set"/> 
     <connect from_op="Loop Examples" 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>