From c915af2347a676b1f3b11dc4c0865c4bdb7ca609 Mon Sep 17 00:00:00 2001 From: Chris Dyer Date: Sun, 30 Nov 2014 21:30:09 -0500 Subject: implementation of Rico Sennrich's CKY+ variant; it currently doesn't support span limits so it is not enabled, but it seems to be functional. --- decoder/bottom_up_parser-rs.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 decoder/bottom_up_parser-rs.h (limited to 'decoder/bottom_up_parser-rs.h') diff --git a/decoder/bottom_up_parser-rs.h b/decoder/bottom_up_parser-rs.h new file mode 100644 index 00000000..2e271e99 --- /dev/null +++ b/decoder/bottom_up_parser-rs.h @@ -0,0 +1,29 @@ +#ifndef RSBOTTOM_UP_PARSER_H_ +#define RSBOTTOM_UP_PARSER_H_ + +#include +#include + +#include "lattice.h" +#include "grammar.h" + +class Hypergraph; + +// implementation of Sennrich (2014) parser +// http://aclweb.org/anthology/W/W14/W14-4011.pdf +class RSExhaustiveBottomUpParser { + public: + RSExhaustiveBottomUpParser(const std::string& goal_sym, + const std::vector& grammars); + + // returns true if goal reached spanning the full input + // forest contains the full (i.e., unpruned) parse forest + bool Parse(const Lattice& input, + Hypergraph* forest) const; + + private: + const std::string goal_sym_; + const std::vector grammars_; +}; + +#endif -- cgit v1.2.3