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authoradam.d.lopez <adam.d.lopez@ec762483-ff6d-05da-a07a-a48fb63a330f>2010-07-13 03:27:59 +0000
committeradam.d.lopez <adam.d.lopez@ec762483-ff6d-05da-a07a-a48fb63a330f>2010-07-13 03:27:59 +0000
commitbded9a46cb3a27b8049f74e9948be783ae6ec42a (patch)
tree6d161d306ae43db7226dbefc84d5cf58dbe50c43 /tests/system_tests/australia/gold.stdout
parent2530464e1c2cc7eec9445b2f9b0ae90c59265f57 (diff)
cdec now supports coarse-to-fine decoding (for SCFG only).
CTF has several options: -coarse_to_fine_beam_prune=<double> (required to activate CTF) assign an alpha parameter for pruning the coarse foreast -ctf_beam_widen=<double> (optional, defaults to 2.0): ratio to widen coarse pruning beam if fine parse fails. -ctf_num_widenings=<int> (optional, defaults to 2): number of times to widen coarse beam before defaulting to exhaustive source parsing -ctf_no_exhaustive (optional) do not attempt exhaustive parse if CTF fails to find a parse. Additionally, script extools/coarsen_grammar.pl will create a coarse-to-fine grammar (for X?? categories *only*). cdec will read CTF grammars in a format identical to the original, in which refinements of a rule immediately follow the coarse projection, preceded by an additional whitespace character. Not fully tested, but should be backwards compatible. Also not yet integrated into pipelines, but should work on the command line. git-svn-id: https://ws10smt.googlecode.com/svn/trunk@231 ec762483-ff6d-05da-a07a-a48fb63a330f
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