madlib/madlib — pull request #284 by livingstream (2012-11-12 03:23:57+00:00)
Title: resolve crf inference bottleneck 

This pull request resolve crf inference bottleneck.
I changed the schema of viterbi_rtbl from to "(seg_text text, score integer[])" to "(seg_text text, label integer, score integer)".
This change will make the construction of the 'rfactors' table in the 'vcrf_label' function 44(tag set size -1) times faster ideally.