Trouble in reading integer

Rapidminerpartner

Hello, everyone

In my project, I have to read integer such as "2148312002" or "2148312010"

Then if I read data like "2148312002" using Import Data

and I chose integer type for this value

Then the value changes to

2147483647

after reading this data. I guess any integer value greater than 2148312002 will change to 2147483647 But, if I read this data and change the type to polynominal, it is OK. However, I want to read stuff like "2148312002" as integer. So please find the reason why this happen for me Thank you and have a nice day

yyhuang

Hi @Rapidminerpartner,

2147483647 is the maximum positive value for a 32-bit signed binary integer in computing.

As a workaround for now you can also use a Numerical To Real operator. They won't see the difference without going to the statistics.

If this huge integer is a unique identifier (ID), it is better to be converted to polynominal. 

Best,

<?xml version="1.0" encoding="UTF-8"?><process version="9.4.000-BETA">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="9.4.000-BETA" 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="generate_sales_data" compatibility="9.4.000-BETA" expanded="true" height="68" name="Generate Sales Data" width="90" x="45" y="34">
        <parameter key="number_examples" value="100"/>
        <parameter key="use_local_random_seed" value="false"/>
        <parameter key="local_random_seed" value="1992"/>
      </operator>
      <operator activated="true" class="date_to_numerical" compatibility="9.0.001" expanded="true" height="82" name="Date to Numerical" width="90" x="179" y="34">
        <parameter key="attribute_name" value="date"/>
        <parameter key="time_unit" value="millisecond"/>
        <parameter key="millisecond_relative_to" value="epoch"/>
        <parameter key="second_relative_to" value="minute"/>
        <parameter key="minute_relative_to" value="hour"/>
        <parameter key="hour_relative_to" value="day"/>
        <parameter key="day_relative_to" value="month"/>
        <parameter key="week_relative_to" value="year"/>
        <parameter key="month_relative_to" value="year"/>
        <parameter key="quarter_relative_to" value="year"/>
        <parameter key="half_year_relative_to" value="year"/>
        <parameter key="year_relative_to" value="era"/>
        <parameter key="keep_old_attribute" value="true"/>
      </operator>
      <operator activated="true" class="numerical_to_real" compatibility="9.4.000-BETA" expanded="true" height="82" name="Numerical to Real" width="90" x="313" y="34">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="date_millisecond"/>
        <parameter key="attributes" value=""/>
        <parameter key="use_except_expression" value="false"/>
        <parameter key="value_type" value="numeric"/>
        <parameter key="use_value_type_exception" value="false"/>
        <parameter key="except_value_type" value="real"/>
        <parameter key="block_type" value="value_series"/>
        <parameter key="use_block_type_exception" value="false"/>
        <parameter key="except_block_type" value="value_series_end"/>
        <parameter key="invert_selection" value="false"/>
        <parameter key="include_special_attributes" value="false"/>
      </operator>
      <operator activated="true" class="store" compatibility="9.4.000-BETA" expanded="true" height="68" name="Store" width="90" x="447" y="34">
        <parameter key="repository_entry" value="//demo/date to num milliseconds"/>
      </operator>
      <connect from_op="Generate Sales Data" from_port="output" to_op="Date to Numerical" to_port="example set input"/>
      <connect from_op="Date to Numerical" from_port="example set output" to_op="Numerical to Real" to_port="example set input"/>
      <connect from_op="Numerical to Real" from_port="example set output" to_op="Store" to_port="input"/>
      <connect from_op="Store" from_port="through" 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>

Marco_Boeck

Hi,

You cannot read it as an integer, as Integer is limited to 2^31 = 2,147,483,647 in Java.
You can read it as a real, then it will be fine.

Regards,
Marco

Rapidminerpartner

I attached captured image of the result window

Rapidminerpartner

Hello, yyhuang and Marco_Boeck

Oh, I understand.

I forgot that number is about 2^31

Thank you very much for your help and have a nice day!