how to select the attribute role?
i need to group some sentences or compute the similarity of these sentences, such as the sentences below. i create a .xls file of 2*2, the first column is ID, the second column is text, when use rapidminer to do this job, how to select the attribute role? for example, attribute, label, id, weight, batch, cluster, prediction, outlier, cost, etc.
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thanks in advance for any help