https://github.com/moses-smt/salm

SALM: Suffix Array and its Applications in Empirical Language Processing by Joy
https://github.com/moses-smt/salm

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SALM: Suffix Array and its Applications in Empirical Language Processing by Joy

• Host: GitHub
• URL: https://github.com/moses-smt/salm
• Owner: moses-smt
• License: gpl-2.0
• Created: 2013-11-25T09:55:10.000Z (about 11 years ago)
• Default Branch: master
• Last Pushed: 2017-12-22T16:02:03.000Z (almost 7 years ago)
• Last Synced: 2024-08-04T04:07:35.249Z (4 months ago)
• Language: C++
• Size: 371 KB
• Stars: 11
• Watchers: 15
• Forks: 6
• Open Issues: 1
• Metadata Files:
  • Readme: Readme

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• low-resource-languages - salm - SALM: Suffix Array and its Applications in Empirical Language Processing by Joy. (Software / Utilities)

README

        
SALM: Suffix Array tool kit for empirical Language Manipulations.

By Joy, [email protected]

1) Download the source code from: http://projectile.is.cs.cmu.edu/research/public/tools/salm/salm.htm or http://www.sourceforge.net/projects/salm

2) Build binaries:

	a) For Linux platform:

		cd Distribution/Linux

		make allO32 (for 32-bit platform)

		or

		make allO64 (for 64-bit platform)

		

		Binaries are created under Bin/Linux

		

	b) For Win32 platform

		open project files under Distribution/Win32 and use Visual C++ to build executables.

		Executables are placed under Bin/Win32

		

3) Index a corpus.

	The first step is to index a corpus using IndexSA program.

	There is no limitation to the size of the corpus as long as there is enough RAM.

	A corpus of N words requires 9N bytes memory during indexing.

	

	Another constraint is that no sentence can have more than 254 words.

	

	Synposis of IndexSA:

		IndexSA corpusFileName [existingIDVocabularyFile]

	

	Optional existingIDVocabularyFile can be used to specify an existing vocabulary.

	It will be updated if the words in the corpus are new to the exising vocabulary.

	This is useful if several corpora want to share a common vocabulary.

	

4) Applications

	The key functions to suffix array applications are provided in class C_SuffixArraySearchApplicationBase and C_SuffixArrayScanningBase

	Please check the documentation and API for more details.

	

	Sample programs such as:

	

		FrequencyOfNgrams: 

			Output the frequency of an n-gram in the training corpus

			

		NGramMatchingStat4TestSet		

			Output the n-gram token matching statistics of a testing data

	

		NgramTypeInTestSetMatchedInCorpus

			Output the n-gram type matching statistics of a testing data

			

		NgramMatchingFreq4Sent

			Output the frequencies of all the embedded n-grams in a sentence

			

		NgramMatchingFreqAndNonCompositionality4Sent

			Output the non-compositionalities of the embedded n-grams in a sentence

			

		FilterDuplicatedSentences

			Filter out duplicated sentences in the training corpus and output the unique ones

					

		CollectNgramFreqCount

			Given a list of n-grams and a list of traing corpus indexed by their suffix array, collect counts of n-grams in these corpus. E.g. given a Chinese word list, one can collect the frequency of these words (as character n-grams) from several large corpora (segmented into characters).

		CalcCountOfCounts

			Output the count-of-counts information of a corpus

			

		OutputHighFreqNgram

			Specified by a configuration file, output the n-gram types that have frequencies higher than the threshold

	

		TypeTokenFreqInCorpus

			Output the type/token statistics of the corpus

5) Questions, comments and suggestions?

Please email [email protected]