If… There is a really interesting case study in the Collins Parser. Starting around 1999, Michael Collins published some really exciting results on parsing (in

If… There is a really interesting case study in the Collins Parser. Starting around 1999, Michael Collins published some really exciting results on parsing (interpreting the grammatical structure of nature language). However, people could not replicate them--a "clean room" implementation of Collins' models didn't work nearly as well as the paper claimed it should. Dan Bickel identified a number of apparently trivial implementation decisions that, when taken together accounted for Collins' models improved performance. There's a nice tech report describing this process here: http://repository.upenn.edu/cgi/viewcontent.cgi?article=1026&context=cis_reports http://repository.upenn.edu/cgi/viewcontent.cgi?article=1026...