Direct comparison of subcategorization frame acquisition systems is difficult because of variations in the number of frames extracted, the number of test verbs, the gold standards used, the size of the test data, and the level of detail in the subcategorization frames (e.g., whether they are parameterized for specific prepositions).
in order to establish a baseline against which to compare our results, following Schulte in Walde (2002b), we assigned the two most frequent frame types (transitive and intransitive) by default to each verb and compared this "artificial" lexicon to the gold standard.