How to convert a database dataset to item set dataset

soheil008

Hi

 

I want to convert my database to item set form. For example assume table:

Tid      Item

 1           1

 1           2

 2           1

 2           3

 

I want it changes to:

 

Tid  Item1    Item2    Item3

 1     true       true      false

 2     true       false     true

 

How can I do that in rapidminer studio?

MartinLiebig

Hey,

 

attached is a process solving it.

 

~Martin

 

<?xml version="1.0" encoding="UTF-8"?><process version="7.4.000">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="7.4.000" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="subprocess" compatibility="7.4.000" expanded="true" height="82" name="Subprocess" width="90" x="45" y="34">
        <process expanded="true">
          <operator activated="true" class="generate_data_user_specification" compatibility="7.4.000" expanded="true" height="68" name="Generate Data by User Specification" width="90" x="45" y="34">
            <list key="attribute_values">
              <parameter key="Tid" value="1"/>
              <parameter key="id" value="1"/>
            </list>
            <list key="set_additional_roles"/>
          </operator>
          <operator activated="true" class="generate_data_user_specification" compatibility="7.4.000" expanded="true" height="68" name="Generate Data by User Specification (2)" width="90" x="45" y="136">
            <list key="attribute_values">
              <parameter key="Tid" value="1"/>
              <parameter key="id" value="2"/>
            </list>
            <list key="set_additional_roles"/>
          </operator>
          <operator activated="true" class="generate_data_user_specification" compatibility="7.4.000" expanded="true" height="68" name="Generate Data by User Specification (3)" width="90" x="45" y="238">
            <list key="attribute_values">
              <parameter key="Tid" value="2"/>
              <parameter key="id" value="1"/>
            </list>
            <list key="set_additional_roles"/>
          </operator>
          <operator activated="true" class="generate_data_user_specification" compatibility="7.4.000" expanded="true" height="68" name="Generate Data by User Specification (4)" width="90" x="45" y="340">
            <list key="attribute_values">
              <parameter key="Tid" value="2"/>
              <parameter key="id" value="3"/>
            </list>
            <list key="set_additional_roles"/>
          </operator>
          <operator activated="true" class="append" compatibility="7.4.000" expanded="true" height="145" name="Append" width="90" x="246" y="136"/>
          <connect from_op="Generate Data by User Specification" from_port="output" to_op="Append" to_port="example set 4"/>
          <connect from_op="Generate Data by User Specification (2)" from_port="output" to_op="Append" to_port="example set 3"/>
          <connect from_op="Generate Data by User Specification (3)" from_port="output" to_op="Append" to_port="example set 2"/>
          <connect from_op="Generate Data by User Specification (4)" from_port="output" to_op="Append" to_port="example set 1"/>
          <connect from_op="Append" from_port="merged set" to_port="out 1"/>
          <portSpacing port="source_in 1" spacing="0"/>
          <portSpacing port="sink_out 1" spacing="0"/>
          <portSpacing port="sink_out 2" spacing="0"/>
        </process>
      </operator>
      <operator activated="true" class="generate_attributes" compatibility="7.4.000" expanded="true" height="82" name="Generate Attributes" width="90" x="179" y="34">
        <list key="function_descriptions">
          <parameter key="value" value="1"/>
        </list>
        <description align="center" color="transparent" colored="false" width="126">Create a constant for pivot</description>
      </operator>
      <operator activated="true" class="pivot" compatibility="7.4.000" expanded="true" height="82" name="Pivot" width="90" x="313" y="34">
        <parameter key="group_attribute" value="Tid"/>
        <parameter key="index_attribute" value="id"/>
        <parameter key="skip_constant_attributes" value="false"/>
      </operator>
      <operator activated="true" class="replace_missing_values" compatibility="7.4.000" expanded="true" height="103" name="Replace Missing Values" width="90" x="447" y="34">
        <parameter key="default" value="zero"/>
        <list key="columns"/>
      </operator>
      <operator activated="true" class="numerical_to_binominal" compatibility="7.4.000" expanded="true" height="82" name="Numerical to Binominal" width="90" x="581" y="34"/>
      <connect from_op="Subprocess" from_port="out 1" to_op="Generate Attributes" to_port="example set input"/>
      <connect from_op="Generate Attributes" from_port="example set output" to_op="Pivot" to_port="example set input"/>
      <connect from_op="Pivot" from_port="example set output" to_op="Replace Missing Values" to_port="example set input"/>
      <connect from_op="Replace Missing Values" from_port="example set output" to_op="Numerical to Binominal" to_port="example set input"/>
      <connect from_op="Numerical to Binominal" from_port="example set output" 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>