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POHow to declare class when loading data set from database in Weka
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2012-09-13T19:49:57.897
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I'm trying to understand how the following .arff file can be expressed in Weka when loading data from database instead of the file. An .arff file has the following form: <pre><code>@relation sample @attribute expression string @attribute tone {postive,negative} @data 'this is a happy message', positive 'this is an unhappy message', negative </code></pre> In the case of loading data from a database, consisting of one table with two fields - expression and tone - , how can I let weka know that the field tone gets only two possible values, positive or negative ? Both of the fields are Strings. I want to apply NominalToString filter on expression to convert it to String and the apply StringToWord filter. However because of the tone attribute it can't be done... Any solutions?
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<database><weka><class-attribute>
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How to declare class when loading data set from database in Weka
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