t-SNE operator bug

mneethling

Hi, it seems the t-SNE operator from the Operator Toolbox has a defect where the special column values gets changed (id and label columns). To illustrate I've modified the t-SNE toturial slightly:

<div><br></div><div><?xml version="1.0" encoding="UTF-8"?><process version="9.0.003"><br>&nbsp; <context><br>&nbsp;&nbsp;&nbsp; <input/><br>&nbsp;&nbsp;&nbsp; <output/><br>&nbsp;&nbsp;&nbsp; <macros/><br>&nbsp; </context><br>&nbsp; <operator activated="true" class="process" compatibility="9.0.003" expanded="true" name="Process" origin="GENERATED_TUTORIAL"><br>&nbsp;&nbsp;&nbsp; <process expanded="true"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <operator activated="true" class="generate_data" compatibility="9.0.003" expanded="true" height="68" name="Generate Data" origin="GENERATED_TUTORIAL" width="90" x="179" y="34"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parameter key="target_function" value="two gaussians classification"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parameter key="number_of_attributes" value="10"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <description align="center" color="transparent" colored="false" width="126">10-dimensional Gaussian mixture data</description><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </operator><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <operator activated="true" class="generate_attributes" compatibility="9.0.003" expanded="true" height="82" name="Generate Attributes" width="90" x="313" y="34"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <list key="function_descriptions"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parameter key="ID" value="str(round(rand()*10000))"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </list><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </operator><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <operator activated="true" breakpoints="after" class="set_role" compatibility="9.0.003" expanded="true" height="82" name="Set Role" width="90" x="447" y="34"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parameter key="attribute_name" value="ID"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parameter key="target_role" value="id"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <list key="set_additional_roles"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </operator><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <operator activated="true" class="operator_toolbox:tsne" compatibility="1.5.000" expanded="true" height="82" name="t-SNE" origin="GENERATED_TUTORIAL" width="90" x="581" y="34"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parameter key="attributes" value="att2|att1"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parameter key="perplexity" value="25.0"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parameter key="iterations" value="10000"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </operator><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <connect from_op="Generate Data" from_port="output" to_op="Generate Attributes" to_port="example set input"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <connect from_op="Generate Attributes" from_port="example set output" to_op="Set Role" to_port="example set input"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <connect from_op="Set Role" from_port="example set output" to_op="t-SNE" to_port="exa"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <connect from_op="t-SNE" from_port="exa" to_port="result 1"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <portSpacing port="source_input 1" spacing="0"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <portSpacing port="sink_result 1" spacing="0"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <portSpacing port="sink_result 2" spacing="0"/><br>&nbsp;&nbsp;&nbsp; </process><br>&nbsp; </operator><br></process><br></div>

Maybe someone can explain this behaviour?

MartinLiebig

Hi @mneethling ,
thank you for reporting this. It indeed looks like a bug. I am the author of this operator an will check what's going on to provide a bug fix.

Best,
Martin

MartinLiebig

HI @mneethling ,

i was able to trace down the issue. I've created an internal patch. This should be available next week at latest.

Best,
Martin

tftemme

Hi @mneethling ,

Sorry we forgot to mention that the bugfix was released with version 1.7.0 of the Operator Toolbox (release date 2018-11-26).

This thread can be closed now.

Best regards,
Fabian