[SOLVED] Type 'text' no longer available when importing data
Hi,
I am importing a csv file into my local repository. One of the fields is type 'text', but after upgrading to Rapidminer 7 I only find 'polynomial' as option, 'text' seems to have disappeared. However, I still need the 'text' option, as I have to map those text strings into nominal values, and the 'Text to Nominal' operator does exist, but 'Polynomial to Nominal' does not.
How can I change the type of the attribute to text when importing the data? Or, alternatively, how can I have a 'Polynomial to Nominal' conversion?
Thanks
I am importing a csv file into my local repository. One of the fields is type 'text', but after upgrading to Rapidminer 7 I only find 'polynomial' as option, 'text' seems to have disappeared. However, I still need the 'text' option, as I have to map those text strings into nominal values, and the 'Text to Nominal' operator does exist, but 'Polynomial to Nominal' does not.
How can I change the type of the attribute to text when importing the data? Or, alternatively, how can I have a 'Polynomial to Nominal' conversion?
Thanks
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Right. That's the problem. The process to import my csv file only allows me to define this attribute as polynominal. But there's no 'polynominal to numerical' operator. I could use a chain of 'polynominal to nominal' followed by 'nominal to numerical', but there's no 'polynominal to nominal' operator either.
With RapidMiner 6 I had the option to import my csv using attribute type 'text'. Then I could chain 'text to nominal' followed by 'nominal to numerical'.
So, is there an option to transform a polynominal attribute into numerical or nominal with RapidMiner 7?
Thanks
With RapidMiner 6 I had the option to import my csv using attribute type 'text'. Then I could chain 'text to nominal' followed by 'nominal to numerical'.
So, is there an option to transform a polynominal attribute into numerical or nominal with RapidMiner 7?
Thanks
If you want nominal as a result you can just stick with polynominal. Polynominal simply describes a string attribute with a nominal mapping and possibly n different strings where n = number of examples.
There should be nothing that requires "nominal" input but denies polynominal.
Cheers,
Marco