8. The method of claim 7 , wherein the machine learning mechanism further receives, for each input text in a training set of input texts, information relating to a category.
7. The method of claim 1 , wherein for each sequence of the plurality of attribute determination sequences in the training set, receiving the subset of attribute determinations in the attribute determination sequence that is likely to be a false positive comprises a machine learning mechanism receiving, for each input text in a training set of input texts: first data that indicates attribute determinations made by an attribute extractor based on attribute value dictionaries; and second data that indicates accurate attribute determinations or false positive attribute determinations.