Re: [Classifier4j-devel] level two

[karl w. <we...@ho...>]

7 feb 2006 kl. 12.28 skrev Nick Lothian:

> karl wettin wrote:
>
>> I really like the simplicity of the C4J API, but think it's too  
>> bad  there is no support for other than nominal values. Have you   
>> considered to add support for numeric values in the interfaces?  
>> I'd  love to plug in the Weka J48 (and others) to the same API.  
>> The C4J  classifiers could simply treat the numeric values as  
>> nominal. It  would also be nice with more than one dimension of  
>> classes per  classifier, i.e. rows and columns.
>>
>> How about that? Or is this outside the indended scope of C4J?  
>> Perhaps  I should make my own facade that handles both Weka and  
>> C4J in a  simple way?
>>
>
> I'm quite interested in this, but I have to admit I don't  
> understand the distinction between numeric & nominal values. Can  
> you explain this some (to save me some googling-time...)?

Very short: nominal values are strings. Numeric values are integer/ 
floating point values.

They are both classes, but numerical values are easier to bend in  
either direction than a nominal value.

-- 
karl