hi...discovered the interesting "unfold" option today in my RapidMiner journey and was quite happy to find it. If I understand it properly, it has the ability to union a collection of example sets with one operator (in the same way that the Append operator does if the number&type of attributes are identical)? Two questions: 1) why on earth is it called "unfold"? I've been searching for this ability for a long, long time (and been creating daisy chains of Union operators during this time). Why not call it "union"? 2) how can I get it to work? in the input, I put multiple example sets and then, if I check "unfold", I would expect one big union example set coming out. But it does not work. Help?
Here I generate three example sets, collect them, and then try to "unfold" them using Collect:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="6.5.002">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="6.5.002" expanded="true" name="Process">
<process expanded="true">
<operator activated="true" class="generate_data" compatibility="6.5.002" expanded="true" height="60" name="Generate Data" width="90" x="45" y="120">
<parameter key="attributes_lower_bound" value="0.0"/>
</operator>
<operator activated="true" class="generate_data" compatibility="6.5.002" expanded="true" height="60" name="Generate Data (2)" width="90" x="45" y="210">
<parameter key="number_of_attributes" value="3"/>
<parameter key="attributes_lower_bound" value="0.0"/>
</operator>
<operator activated="true" class="generate_data" compatibility="6.5.002" expanded="true" height="60" name="Generate Data (3)" width="90" x="45" y="300">
<parameter key="number_of_attributes" value="8"/>
<parameter key="attributes_lower_bound" value="0.0"/>
</operator>
<operator activated="true" class="collect" compatibility="6.5.002" expanded="true" height="112" name="Collect" width="90" x="246" y="165"/>
<operator activated="true" class="collect" compatibility="6.5.002" expanded="true" height="76" name="Collect (2)" width="90" x="380" y="165">
<parameter key="unfold" value="true"/>
</operator>
<connect from_op="Generate Data" from_port="output" to_op="Collect" to_port="input 1"/>
<connect from_op="Generate Data (2)" from_port="output" to_op="Collect" to_port="input 2"/>
<connect from_op="Generate Data (3)" from_port="output" to_op="Collect" to_port="input 3"/>
<connect from_op="Collect" from_port="collection" to_op="Collect (2)" to_port="input 1"/>
<connect from_op="Collect (2)" from_port="collection" 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>
Here I do the same thing with Loop Collection:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="6.5.002">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="6.5.002" expanded="true" name="Process">
<process expanded="true">
<operator activated="true" class="generate_data" compatibility="6.5.002" expanded="true" height="60" name="Generate Data" width="90" x="45" y="120">
<parameter key="attributes_lower_bound" value="0.0"/>
</operator>
<operator activated="true" class="generate_data" compatibility="6.5.002" expanded="true" height="60" name="Generate Data (2)" width="90" x="45" y="210">
<parameter key="number_of_attributes" value="3"/>
<parameter key="attributes_lower_bound" value="0.0"/>
</operator>
<operator activated="true" class="generate_data" compatibility="6.5.002" expanded="true" height="60" name="Generate Data (3)" width="90" x="45" y="300">
<parameter key="number_of_attributes" value="8"/>
<parameter key="attributes_lower_bound" value="0.0"/>
</operator>
<operator activated="true" class="collect" compatibility="6.5.002" expanded="true" height="112" name="Collect" width="90" x="246" y="165"/>
<operator activated="true" class="loop_collection" compatibility="6.5.002" expanded="true" height="76" name="Loop Collection" width="90" x="380" y="165">
<parameter key="unfold" value="true"/>
<process expanded="true">
<connect from_port="single" to_port="output 1"/>
<portSpacing port="source_single" spacing="0"/>
<portSpacing port="sink_output 1" spacing="0"/>
<portSpacing port="sink_output 2" spacing="0"/>
</process>
</operator>
<connect from_op="Generate Data" from_port="output" to_op="Collect" to_port="input 1"/>
<connect from_op="Generate Data (2)" from_port="output" to_op="Collect" to_port="input 2"/>
<connect from_op="Generate Data (3)" from_port="output" to_op="Collect" to_port="input 3"/>
<connect from_op="Collect" from_port="collection" to_op="Loop Collection" to_port="collection"/>
<connect from_op="Loop Collection" from_port="output 1" 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>
I must be missing something very simple? Thanks.
Scott
