Apply Model operator throwing null pointer exception
Contributor I
Hi,
I am providing Prediction Model generated by HMM Baum-Welch Learner and ExampleSet by selecting one attribute from excel to Apply model operator
but Apply Model throws an null pointer exception.
The XML of process is as follows:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.1.014">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="5.1.014" expanded="true" name="Process">
<process expanded="true" height="431" width="683">
<operator activated="true" class="hmm:jahmm_reader" compatibility="5.0.000" expanded="true" height="60" name="JAHMM Model Reader" width="90" x="45" y="165">
<parameter key="model_file" value="C:\Users\rohanu\Desktop\TEST.txt"/>
</operator>
<operator activated="true" class="read_excel" compatibility="5.1.014" expanded="true" height="60" name="Read Excel" width="90" x="45" y="30">
<parameter key="excel_file" value="C:\Users\rohanu\Desktop\TEST.xls"/>
<list key="annotations"/>
<list key="data_set_meta_data_information">
<parameter key="0" value="Test.true.text.attribute"/>
</list>
</operator>
<operator activated="true" class="multiply" compatibility="5.1.014" expanded="true" height="94" name="Multiply" width="90" x="179" y="165"/>
<operator activated="true" class="hmm:hmm_baum_welch" compatibility="5.0.000" expanded="true" height="76" name="HMM Baum-Welch Learner" width="90" x="313" y="30">
<parameter key="observation_attribute" value="Test"/>
</operator>
<operator activated="true" class="read_excel" compatibility="5.1.014" expanded="true" height="60" name="Read Excel (2)" width="90" x="45" y="300">
<parameter key="excel_file" value="C:\Users\rohanu\Desktop\GETEG.xls"/>
<list key="annotations"/>
<list key="data_set_meta_data_information">
<parameter key="0" value="Test.true.text.attribute"/>
</list>
</operator>
<operator activated="true" class="select_attributes" compatibility="5.1.014" expanded="true" height="76" name="Select Attributes (2)" width="90" x="313" y="300">
<parameter key="attribute_filter_type" value="single"/>
<parameter key="attribute" value="Test"/>
<parameter key="attributes" value="Gender|Name1|"/>
</operator>
<operator activated="true" class="apply_model" compatibility="5.1.014" expanded="true" height="76" name="Apply Model" width="90" x="514" y="210">
<list key="application_parameters"/>
</operator>
<connect from_op="JAHMM Model Reader" from_port="output" to_op="Multiply" to_port="input"/>
<connect from_op="Read Excel" from_port="output" to_op="HMM Baum-Welch Learner" to_port="training set"/>
<connect from_op="Multiply" from_port="output 1" to_op="HMM Baum-Welch Learner" to_port="HMM model"/>
<connect from_op="Multiply" from_port="output 2" to_port="result 1"/>
<connect from_op="HMM Baum-Welch Learner" from_port="model" to_op="Apply Model" to_port="model"/>
<connect from_op="Read Excel (2)" from_port="output" to_op="Select Attributes (2)" to_port="example set input"/>
<connect from_op="Select Attributes (2)" from_port="example set output" to_op="Apply Model" to_port="unlabelled data"/>
<connect from_op="Apply Model" from_port="labelled data" to_port="result 2"/>
<connect from_op="Apply Model" from_port="model" to_port="result 3"/>
<portSpacing port="source_input 1" spacing="0"/>
<portSpacing port="sink_result 1" spacing="0"/>
<portSpacing port="sink_result 2" spacing="0"/>
<portSpacing port="sink_result 3" spacing="0"/>
<portSpacing port="sink_result 4" spacing="0"/>
</process>
</operator>
</process>
Please help !!
I am providing Prediction Model generated by HMM Baum-Welch Learner and ExampleSet by selecting one attribute from excel to Apply model operator
but Apply Model throws an null pointer exception.
The XML of process is as follows:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.1.014">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="5.1.014" expanded="true" name="Process">
<process expanded="true" height="431" width="683">
<operator activated="true" class="hmm:jahmm_reader" compatibility="5.0.000" expanded="true" height="60" name="JAHMM Model Reader" width="90" x="45" y="165">
<parameter key="model_file" value="C:\Users\rohanu\Desktop\TEST.txt"/>
</operator>
<operator activated="true" class="read_excel" compatibility="5.1.014" expanded="true" height="60" name="Read Excel" width="90" x="45" y="30">
<parameter key="excel_file" value="C:\Users\rohanu\Desktop\TEST.xls"/>
<list key="annotations"/>
<list key="data_set_meta_data_information">
<parameter key="0" value="Test.true.text.attribute"/>
</list>
</operator>
<operator activated="true" class="multiply" compatibility="5.1.014" expanded="true" height="94" name="Multiply" width="90" x="179" y="165"/>
<operator activated="true" class="hmm:hmm_baum_welch" compatibility="5.0.000" expanded="true" height="76" name="HMM Baum-Welch Learner" width="90" x="313" y="30">
<parameter key="observation_attribute" value="Test"/>
</operator>
<operator activated="true" class="read_excel" compatibility="5.1.014" expanded="true" height="60" name="Read Excel (2)" width="90" x="45" y="300">
<parameter key="excel_file" value="C:\Users\rohanu\Desktop\GETEG.xls"/>
<list key="annotations"/>
<list key="data_set_meta_data_information">
<parameter key="0" value="Test.true.text.attribute"/>
</list>
</operator>
<operator activated="true" class="select_attributes" compatibility="5.1.014" expanded="true" height="76" name="Select Attributes (2)" width="90" x="313" y="300">
<parameter key="attribute_filter_type" value="single"/>
<parameter key="attribute" value="Test"/>
<parameter key="attributes" value="Gender|Name1|"/>
</operator>
<operator activated="true" class="apply_model" compatibility="5.1.014" expanded="true" height="76" name="Apply Model" width="90" x="514" y="210">
<list key="application_parameters"/>
</operator>
<connect from_op="JAHMM Model Reader" from_port="output" to_op="Multiply" to_port="input"/>
<connect from_op="Read Excel" from_port="output" to_op="HMM Baum-Welch Learner" to_port="training set"/>
<connect from_op="Multiply" from_port="output 1" to_op="HMM Baum-Welch Learner" to_port="HMM model"/>
<connect from_op="Multiply" from_port="output 2" to_port="result 1"/>
<connect from_op="HMM Baum-Welch Learner" from_port="model" to_op="Apply Model" to_port="model"/>
<connect from_op="Read Excel (2)" from_port="output" to_op="Select Attributes (2)" to_port="example set input"/>
<connect from_op="Select Attributes (2)" from_port="example set output" to_op="Apply Model" to_port="unlabelled data"/>
<connect from_op="Apply Model" from_port="labelled data" to_port="result 2"/>
<connect from_op="Apply Model" from_port="model" to_port="result 3"/>
<portSpacing port="source_input 1" spacing="0"/>
<portSpacing port="sink_result 1" spacing="0"/>
<portSpacing port="sink_result 2" spacing="0"/>
<portSpacing port="sink_result 3" spacing="0"/>
<portSpacing port="sink_result 4" spacing="0"/>
</process>
</operator>
</process>
Please help !!
0
Answers
if I get it correctly the HMM Baum-Welch Learner is part of something like a hmm extension, which is not officially supported by Rapid-I. The problems in Apply Model are probably caused by an erroneous model produced by that extension, but since I don't have the extension I can't reproduce your problem. Please contact the author of that extension for further help.
Best,
Marius