We found the same number using our previous approach ( Wang and Callison-Burch , 2011 ) , which is roughly equivalent to our core module .
paraphrase fragment extraction from monolingual comparable corpora
Rui Wang Chris Callison-Burch
However , precision is usually manually evaluated , so the figures are at least indicative for a comparison with previous work : One state-of-theart system introduced by Zhao et al. ( 2008 ) extracts paraphrase fragments from bilingual parallel corpora and reaches a precision of 0.67 . We found the same number using our previous approach ( Wang and Callison-Burch , 2011 ) , which is roughly equivalent to our core module . Our approach outperforms both by 17 % with similar estimated productivity .
We found the same number using our previous approach ( @@CITATION ) , which is roughly equivalent to our core module .