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wekadata-miningapriori

Weka Apriori Algorithm convert dataset

How can I use this dataset with Weka for Apriori Algorithm ?

'A, C, D',
'B, C, E',
'A, B, C, E',
'B, E'
Solution

  • You need to convert it in .arff format.

    The format of an .arff file is simple, is composed by three fields:

    @relation

@attribute

@data

    In case like this, where you have only a single field ("letters" in your case) you should list all the possible attribute (A,B,C,..) in the attribute field, and then format it (in data field) using boolean values describing presence/absence of the specific attribute in each line.

    Example:

    @relation <file_name>

@attribute 'A' { t}
@attribute 'B' { t}
@attribute 'C' { t}
@attribute 'D' { t}
@attribute 'E' { t}

@data
t, ?, t, t, ?
?, t, t, ?, t
t, t, t, ?, t
?, t, ?, ?, t

    As an other example, look at the example of "supermarket.arff" in Weka data folder.