Return numbers

marcel_drewes

Hi,
I want to name a return number of ">60% = High" and a return number of "<20% = Low". How can I generate this in the results? I just have the customer ID and the average returns in % for each customer.

Thanks for help!

hughesfleming68

You need to understand conditions when faced with a problem like this. Keep things simple when first starting out and use the generate attribute operator and break it down into pieces.

Take a look at the attached process. It should help you get the result you want. It will generate a table which more or less solves your problem. Use it as an example of how to use function expressions.

regards,

Alex

lionelderkrikor

Hi @marcel_drewes,

I'm not sure to understand  : 
">60%" of what ?
Can you describe your dataset and explain (by giving an example) what you want to obtain ?
Depending on what you want to do, maybe Generate Attribute and/or Aggregate operator(s) can be helpful....

Regards,

Lionel

marcel_drewes

Hi,

I am sorry, I am new here. First let me describe my current excel file, it looks like the following:

Customer:__Return rate:__
A_________64%________
B_________19%________
C_________33%________
D_________82%________
...

and I want to convert it into this:

Customer:__Return rate:__(Return-Class:)
A_________64%________(High Returns)
B_________19%________(Low Returns)
C_________33%________(Mid Returns)
D_________82%________(High Returns)
...

so:
>60% = high
<20% = low
21-59% = mid

Thanks for help!

hughesfleming68

You need to understand conditions when faced with a problem like this. Keep things simple when first starting out and use the generate attribute operator and break it down into pieces.

Take a look at the attached process. It should help you get the result you want. It will generate a table which more or less solves your problem. Use it as an example of how to use function expressions.

regards,

Alex

lionelderkrikor

Hi @marcel_drewes,

Here an other example of process which performs what you want to do : 

<?xml version="1.0" encoding="UTF-8"?><process version="9.1.000-BETA2">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="9.1.000-BETA2" expanded="true" name="Process">
    <parameter key="logverbosity" value="init"/>
    <parameter key="random_seed" value="2001"/>
    <parameter key="send_mail" value="never"/>
    <parameter key="notification_email" value=""/>
    <parameter key="process_duration_for_mail" value="30"/>
    <parameter key="encoding" value="SYSTEM"/>
    <process expanded="true">
      <operator activated="true" class="operator_toolbox:create_exampleset" compatibility="1.7.000" expanded="true" height="68" name="Create ExampleSet" width="90" x="45" y="85">
        <parameter key="generator_type" value="comma_separated_text"/>
        <parameter key="number_of_examples" value="100"/>
        <parameter key="use_stepsize" value="false"/>
        <list key="function_descriptions"/>
        <parameter key="add_id_attribute" value="false"/>
        <list key="numeric_series_configuration"/>
        <list key="date_series_configuration"/>
        <list key="date_series_configuration (interval)"/>
        <parameter key="date_format" value="yyyy-MM-dd HH:mm:ss"/>
        <parameter key="input_csv_text" value="Customer,Return_rate&#10;A,64%&#10;B,19%&#10;C,33%&#10;D,82%"/>
        <parameter key="column_separator" value=","/>
        <parameter key="parse_all_as_nominal" value="false"/>
        <parameter key="decimal_point_character" value="."/>
        <parameter key="trim_attribute_names" value="true"/>
      </operator>
      <operator activated="true" class="generate_attributes" compatibility="9.1.000-BETA2" expanded="true" height="82" name="Generate Attributes" width="90" x="313" y="85">
        <list key="function_descriptions">
          <parameter key="Return-class" value="if(parse(replace(Return_rate,&quot;%&quot;,&quot;&quot;))&gt;60,&quot;High&quot;,if(parse(replace(Return_rate,&quot;%&quot;,&quot;&quot;))&lt;20,&quot;Low&quot;,&quot;Mid&quot;))"/>
        </list>
        <parameter key="keep_all" value="true"/>
      </operator>
      <connect from_op="Create ExampleSet" from_port="output" to_op="Generate Attributes" to_port="example set input"/>
      <connect from_op="Generate Attributes" 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>

The results are like that : 


Hope it helps,

Regards,

Lionel

hughesfleming68

@lionelderkrikor Nice example!

marcel_drewes

This task is done. Thanks a lot!

Telcontar120

Discretize by User Specification would be another simple way to solve this problem in RapidMiner.

hughesfleming68

Thanks @Telcontar120. I just tried it. This is a really straight forward way that I had not seen before.