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SUFFIX-ARRAY-EXTRACT README Feb 1, 2012 Written by Adam Lopez, repackaged by Chris Dyer. Originally based on parts of Hiero, by David Chiang, but these dependencies have been removed or rewritten. BUILD INSTRUCTIONS ============================================================================== Requirements: Python 2.7 or later (http://www.python.org) Cython 0.14.1 or later (http://cython.org/) - Edit Makefile to set the location of Python/Cython then do: make COMPILING A PARALLEL CORPUS AND WORD ALIGNMENT ============================================================================== - Run sa-compile.pl to compile the training data and generate an extract.ini file (which is written to STDOUT): sa-compile.pl -b bitext_name=source.fr,target.en \ -a alignment_name=alignment.txt > extract.ini The training data should be in two parallel text files (source.fr,source.en) and the alignments are expected in "0-0 1-2 2-1 ..." format produced by most alignment toolkits. The text files should NOT be escaped for non-XML characters. EXTRACTION OF PER-SENTENCE GRAMMARS ============================================================================== The most common use-case we support is extraction of "per-sentence" grammars for each segment in a testset. You may run the extractor on test set, but it will try to interpret tags as SGML markup, so we provide a script that does escaping: ./escape-testset.pl. - Example: cat test.fr | ./escape-testset.pl | ./extractor.py -c extract.ini EXTRACTION OF COMPLETE TEST-SET GRAMMARS ============================================================================== Edit the generated extract.ini file a change per_sentence_grammar to False. Then, run extraction as normal. Note: extracting a single grammar for an entire test set will consume more memory during extraction and (probably) during decoding. EXAMPLE ============================================================================== - See example/ and the README therein.