AttributeConstruction

laurab

Hi,

I want to use the AttributConstruction operator so that a predictedd value can be used as the last attribute in the next atribute set. Where the first attribute is replaced by the secon attribute value, and so until the last attribute is replaced by the prediction value, a sliding window appraoch.  I.e so I can make twelve predictions.

I am farily sure that I am using the opertor incorrectly!  My attributes are called test.txt(1) to ... test.txt(12) so I tried the following

        <operator name="AttributeConstruction" class="AttributeConstruction">
            <list key="function_descriptions">
              <parameter key="test.txt(1)" value="  test.txt (2)"/>
              <parameter key="test.txt(2)" value=" test.txt (3)"/>
              .......
            <parameter key="test.txt(12)" value=" prediction"/>
            </list>
            <parameter key="keep_all" value="false"/>
        </operator>

I also tried with
      "  value=  "= test.txt (2)"/> "

I think the problem is with the refence made in "function expression" as it "does not know what test.txt" is.  How should I be  expressing the "function expression"? How should I be referenceing the name of the attribute ? ...It tells me that the attributes names are test.txt(1) to... test.txt(12) so why does it not recognise thet attribute when refenced as this?

Thanks

Laura

TobiasMalbrecht

Hi Laura,

unfortunately I did not quite understand what you want to accomplish. But one thing I can already say is that the [tt]AttributeConstruction[/tt] operator does not allow parantheses in the value fields, since it is assuming a function then. Hence, you have to rename your attributes beforehand.

Regards,
Tobias