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TAUS MACHINE TRANSLATION SHOWCASE Moses Past, Present and Future09:20 – 09:40Wednesday, 12 June 2013Hieu HoangUniversity of Edinburgh

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Sta$s$cal Machine Transla$on with Moses Hieu Hoang Localiza$on World 2013 0.6227

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Agenda • What is Sta$s$cal Machine Transla$on? • What is Moses? – Common misconcep$ons • Coming up • What can we do for you? Moses by Hieu Hoang, University of Edinburgh 3

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Agenda • What is Sta$s$cal Machine Transla$on? • What is Moses? – Common misconcep$ons • Coming up • What can we do for you? Moses by Hieu Hoang, University of Edinburgh 4

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What is Sta$s$cal Machine Transla$on? It is very temp,ng to say that a book wri5en in Chinese is simply a book wri5en in English which was coded into the “Chinese code.” If we have useful methods for solving almost any cryptographic problem, may it not be that with proper interpreta,on we already have useful methods for transla,on? Warren Weaver 1949 Moses by Hieu Hoang, University of Edinburgh 5

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• NLP Applica$on – search engines, text mining etc. • Big-­‐data – bi-­‐text from the Internet • eg. mul$lingual websites, documents – large monolingual data • Learn to translate – from previous transla$ons – models of language What is Sta$s$cal Machine Transla$on? Moses by Hieu Hoang, University of Edinburgh 6

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What is Sta$s$cal Machine Transla$on? Training Training Data Linguis$c Tools bi-­‐text monolingual data dic$onary SMT System transla$on model language model lots of numbers… Using Source Text SMT System transla$on model language model lots of numbers… § Source Text Moses by Hieu Hoang, University of Edinburgh 7

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What is a model? Moses by Hieu Hoang, University of Edinburgh 8 thanks to Precision Transla$on Tools • Transla$on Model • Language Model – (of the target language)

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What is a model? • Transla$on model – source à transla$on – probability Moses by Hieu Hoang, University of Edinburgh 9 source target probability den Vorschlag the proposal 0.6227 ‘s proposal 0.1068 a proposal 0.0341 the idea 0.0250 this proposal 0.0227 proposal 0.0205 …. ….

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What is a model? • Language model – Likelihood of sentence – in target language Moses by Hieu Hoang, University of Edinburgh 10 text probability I would like 0.489 would like to 0.905 like to commend 0.002 to commend the 0.472 commend the rapporteur 0.147 …. ….

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Agenda • What is Sta$s$cal Machine Transla$on? • What is Moses? – Common misconcep$ons • Coming up • What can we do for you? Moses by Hieu Hoang, University of Edinburgh 11

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What is Moses? • Replacement for Pharoah – Academic so_ware – Closed-­‐source • Open source • Re-­‐wriaen, clean code – More features • Large developer community – Ini$ated by Hieu Hoang – Developed at NLP Workshop Moses by Hieu Hoang, University of Edinburgh 12

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Agenda • What is Sta$s$cal Machine Transla$on? • What is Moses? – Timeline – Common misconcep$ons • Coming up • What can we do for you? Moses by Hieu Hoang, University of Edinburgh 13

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What is Moses? • Only for Linux • Difficult to use • Unreliable • Only phrase-­‐based • Developed by one person • Slow Common Misconcep$ons Moses by Hieu Hoang, University of Edinburgh 14

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Only works on Linux • Tested on – Windows 7 (32-­‐bit) with Cygwin 6.1 – Mac OSX 10.7 with MacPorts – Ubuntu 12.10, 32 and 64-­‐bit – Debian 6.0, 32 and 64-­‐bit – Fedora 17, 32 and 64-­‐bit – openSUSE 12.2, 32 and 64-­‐bit • Project files for – Visual Studio – Eclipse on Linux and Mac OSX Moses by Hieu Hoang, University of Edinburgh 15

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Difficult to use • Easier compile and install – Boost bjam – No installa$on required • Binaries available for – Linux – Mac – Windows/Cygwin – Moses + Friends • IRSTLM • GIZA++ and MGIZA • Ready-­‐made models trained on Europarl Moses by Hieu Hoang, University of Edinburgh 16

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Unreliable • Monitor check-­‐ins • Unit tests • More regression tests • Nightly tests – Run end-­‐to-­‐end training – hap://www.statmt.org/moses/cruise/ • Tested on all major OSes • Train Europarl models – Phrase-­‐based, hierarchical, factored – 8 language-­‐pairs – hap://www.statmt.org/moses/RELEASE-­‐1.0/models/ Moses by Hieu Hoang, University of Edinburgh 17

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Only phrase-­‐based model – replacement for Pharoah – extension of Pharaoh • From the beginning – Factored models – Lamce and confusion network input – Mul$ple LMs, mul$ple phrase-­‐tables • since 2009 – Hierarchical model – Syntac$c models Moses by Hieu Hoang, University of Edinburgh 18

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Developed by one person • ANYONE can contribute – 50 contributors ‘git blame’ of Moses repository 0% 5% 10% 15% 20% 25% 30% 35% 40% Moses by Hieu Hoang, University of Edinburgh 19

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Slow thanks to Ken!! Decoding -101.7-101.6-101.5-101.41 2 3 4 5ModelscoreCPU seconds/sentence excluding loadingMosescdecJoshuaMoses by Hieu Hoang, University of Edinburgh 20

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Slow • Mul$threaded • Reduced disk IO – compress intermediate files • Reduce disk space requirement Time (mins) 1-­‐core 2-­‐cores 4-­‐cores 8-­‐cores Size (MB) Phrase-­‐based 60 47 (79%) 37 (63%) 33 (56%) 893 Hierarchical 1030 677 (65%) 473 (45%) 375 (36%) 8300 Training Moses by Hieu Hoang, University of Edinburgh 21

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What is Moses? Common Misconcep$ons • Only for Linux • Difficult to use • Unreliable • Only phrase-­‐based • Developed by one person • Slow Moses by Hieu Hoang, University of Edinburgh 22

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What is Moses? • Only for Linux Windows, Linux, Mac • Difficult to use Easier compile and install • Unreliable Mul$-­‐stage tes$ng • Only phrase-­‐based Hierarchical, syntax model • Developed by one person everyone • Slow Fastest decoder, mul$threaded training, less IO Common Misconcep$ons Moses by Hieu Hoang, University of Edinburgh 23

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Agenda • What is Sta$s$cal Machine Transla$on? • What is Moses? – Common misconcep$ons • Coming up • What can we do for you? Moses by Hieu Hoang, University of Edinburgh 24

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Coming up… Moses by Hieu Hoang, University of Edinburgh 25 • Code cleanup • Incremental Training • Beaer transla$on – smaller model – bigger data – faster training and decoding • Applica$ons – CAT tools – Speech transla$on

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Applica$ons • EU Project – CASMACAT – MATECAT Moses by Hieu Hoang, University of Edinburgh 26 Computer-­‐Aided Transla$on

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Agenda • What is Sta$s$cal Machine Transla$on? • What is Moses? – Common misconcep$ons • Coming up • What can we do for you? Moses by Hieu Hoang, University of Edinburgh 27

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What can we do for you? – simpler Moses – graphical interface – Windows compa$bility – terminology and glossary – incremental training • What can you do for us? – code – data – funding Moses by Hieu Hoang, University of Edinburgh 28

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What can we do for you? – simpler Moses – graphical interface – Windows compa$bility – terminology and glossary – incremental training • What can you do for us? – code – data – funding Moses by Hieu Hoang, University of Edinburgh 29