Is it possible to pre-annotate the corpus with phrasal boundaries and labels which the parser has to use?
Not yet, but in the future, very possibly. • Can I obtain multiple parse trees for a single input sentence? Yes, for the PCFG parser (only). With a PCFG parser, you can give the option -printPCFGkBest n and it will print the n highest-scoring parses for a sentence. They can be printed either as phrase structure trees or as typed dependencies in the usual way via the -outputFormat option, and each receives a score (log probability). The k best parses are extracted efficiently by using the algorithm of Huang and Chiang (2005). • I don’t [understand/like/agree with] the parse tree that is assigned to my sentence. Can you [explain/fix] it? This may be because the parser chose an incorrect structure for your sentence, or because the phrase structure annotation conventions used for training the parser don’t match your expectations. To make sure you understand the annotation conventions, please read the bracketing guidelines for the parser model that you’re using, which are referenced above.
