【发布时间】:2018-11-25 16:07:42
【问题描述】:
我已经使用 neural set 运算符训练了一个模型,现在我想应用该模型并评估它在测试数据上的性能(没有标签属性)。为此,我使用了 apply model 运算符,它的第一个输入是我经过训练的建模数据的输出,其中包含(预测值和置信度值),apply model 运算符的第二个输入是我的未标记测试数据,以供参考( How to test on testset using Rapidminer?)。下面是我原始模型执行前的截图:
当我执行该过程时,它会抛出,输入示例集必须有特殊的属性标签,看下面的截图:
当我点击帮我解决问题的链接时,它会在我设置标签属性的地方添加设置角色运算符,执行后它会显示缺少预测的标签属性,
更新: 请参阅下面的 XML:
<?xml version="1.0" encoding="UTF-8"?><process version="8.2.000">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="8.2.000" expanded="true" name="Process">
<process expanded="true">
<operator activated="true" class="retrieve" compatibility="8.2.000" expanded="true" height="68" name="Retrieve" width="90" x="246" y="34">
<parameter key="repository_entry" value="../data/neural"/>
</operator>
<operator activated="true" class="set_role" compatibility="8.2.000" expanded="true" height="82" name="Set Role (2)" width="90" x="380" y="34">
<parameter key="attribute_name" value="Elective1"/>
<parameter key="target_role" value="label"/>
<list key="set_additional_roles"/>
</operator>
<operator activated="true" class="nominal_to_numerical" compatibility="8.2.000" expanded="true" height="103" name="Nominal to Numerical" width="90" x="514" y="34">
<list key="comparison_groups"/>
</operator>
<operator activated="true" class="neural_net" compatibility="8.2.000" expanded="true" height="82" name="Neural Net" width="90" x="648" y="34">
<list key="hidden_layers"/>
</operator>
<operator activated="true" class="retrieve" compatibility="8.2.000" expanded="true" height="68" name="Retrieve (2)" width="90" x="246" y="136">
<parameter key="repository_entry" value="../data/testing neural"/>
</operator>
<operator activated="true" class="apply_model" compatibility="8.2.000" expanded="true" height="82" name="Apply Model (2)" width="90" x="447" y="187">
<list key="application_parameters"/>
</operator>
<operator activated="true" class="apply_model" compatibility="8.2.000" expanded="true" height="82" name="Apply Model" width="90" x="648" y="187">
<list key="application_parameters"/>
</operator>
<operator activated="true" class="set_role" compatibility="8.2.000" expanded="true" height="82" name="Set Role" width="90" x="916" y="85">
<parameter key="attribute_name" value="prediction(Elective1)"/>
<parameter key="target_role" value="label"/>
<list key="set_additional_roles"/>
</operator>
<operator activated="true" class="performance" compatibility="8.2.000" expanded="true" height="82" name="Performance" width="90" x="1184" y="136"/>
<connect from_op="Retrieve" from_port="output" to_op="Set Role (2)" to_port="example set input"/>
<connect from_op="Set Role (2)" from_port="example set output" to_op="Nominal to Numerical" to_port="example set input"/>
<connect from_op="Nominal to Numerical" from_port="example set output" to_op="Neural Net" to_port="training set"/>
<connect from_op="Nominal to Numerical" from_port="preprocessing model" to_op="Apply Model (2)" to_port="model"/>
<connect from_op="Neural Net" from_port="model" to_op="Apply Model" to_port="model"/>
<connect from_op="Retrieve (2)" from_port="output" to_op="Apply Model (2)" to_port="unlabelled data"/>
<connect from_op="Apply Model (2)" from_port="labelled data" to_op="Apply Model" to_port="unlabelled data"/>
<connect from_op="Apply Model" from_port="labelled data" to_op="Set Role" to_port="example set input"/>
<connect from_op="Set Role" from_port="example set output" to_op="Performance" to_port="labelled data"/>
<connect from_op="Performance" from_port="performance" 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>
有什么建议吗??
【问题讨论】:
-
您好,您的流程设置看起来是正确的,我没有发现明显的错误。您能否分享一下性能操作员的输入。它应该有一个“标签”类型和“预测”类型的属性。
-
嗨,我有一个属性在性能运算符之前使用 set role 运算符设置为 label,如果我已经使用 set role 运算符将属性设置为 label,如何将其设置为类型预测?
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简要情况是,我在“retrieve”运算符中有数据,其中包含 4 列中的数据,第 4 个是 label 类型,而在“retrieve2”运算符中,我有相同 3 列的数据,不包括我需要预测的第四个。
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我在更新部分也添加了 XML
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你修好了吗?我也有同样的问题。
标签: performance machine-learning neural-network classification rapidminer