IC1207 COST Action PARSEME PARSing and Multi-Word Expressions - - PowerPoint PPT Presentation

COST PARSEME Working Groups Management Events

IC1207 COST Action PARSEME PARSing and Multi-Word Expressions

Towards linguistic precision and computational efficiency in natural language processing

Agata Savary Linguistics Circle, University of Malta, 11 June 2013

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COST PARSEME Working Groups Management Events

COST

inter-governmental framework (founded in 1971), coordination of nationally-funded European research, funded bu FP7 via ESF (European Science Foundation).

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COST PARSEME Working Groups Management Events

What Is a COST Action?

bottom-up approach: scientific challenges defined by researchers, topics: major challenges in the foundations of science,

• bjective: to overcome the research fragmentation issues,

COST supports cooperation and dissemination: meetings, workshops, short-term missions, training schools, no direct research funding, precursor role for other European programmes, typically a large number of partners involved (about 20 countries), experts from non-COST countries admitted (up to 4), important roles given to Early-Stage Researchers (< PhD+8), budget: 129,000–156,000 euros per year for all partners, proposal selectivity: 6%.

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COST PARSEME Working Groups Management Events

COST Instruments

Scientific/Working Group meetings, Workshops and Seminars, Short Term Scientific Missions (STSMs) (2 weeks – 3/6 months), Training Schools, Dissemination.

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COST PARSEME Working Groups Management Events

PARSEME: Parsing and Multi-word Expressions

General aim Increasing and enhancing the ICT support of the European multilingual heritage. Objectives to put multilingualism in focus of linguistic and technological studies, to establish a long-lasting collaboration of Natural Language Processing (NLP) experts within a cross-lingual, cross-theoretical and cross-methodological research network, bridging the gap between linguistic precision and computation efficiency in NLP application.

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COST PARSEME Working Groups Management Events

PARSEME: Parsing and Multi-word Expressions

General aim Increasing and enhancing the ICT support of the European multilingual heritage. Objectives to put multilingualism in focus of linguistic and technological studies, to establish a long-lasting collaboration of Natural Language Processing (NLP) experts within a cross-lingual, cross-theoretical and cross-methodological research network, bridging the gap between linguistic precision and computation efficiency in NLP application.

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COST PARSEME Working Groups Management Events

Key problem

Multi-Word Expressions The prime time speech by first lady Michelle Obama set the house

• n fire. She made crystal clear which issues she took to heart, but

she was preaching to the choir. Facts MWEs are prevalent (40% of text items), MWEs are complex phenomena involving different levels of language

(lexicon, syntax, meaning . . . ),

MWEs are still not sufficiently understood, MWEs are under-represented in language resources and tools, MWEs are hard to detect, understand, translate, etc.

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COST PARSEME Working Groups Management Events

Key problem

Multi-Word Expressions The prime time speech by first lady Michelle Obama set the house

• n fire. She made crystal clear which issues she took to heart, but

she was preaching to the choir. Facts MWEs are prevalent (40% of text items), MWEs are complex phenomena involving different levels of language

(lexicon, syntax, meaning . . . ),

MWEs are still not sufficiently understood, MWEs are under-represented in language resources and tools, MWEs are hard to detect, understand, translate, etc.

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COST PARSEME Working Groups Management Events

Consortium

75 members (official and unofficial), 25 COST countries, 3 experts from 2 non-COST countries (USA, Brazil), multidisciplinary experts: linguists, computational linguists, computer scientists, psycholinguists, industrials, . . . , different linguistic frameworks: CCG (Combinatory Categorial Grammar), DG (Dependancy Grammar), HPSG (Head-driven Phrase Structure Grammar), LFG (Lexical Functional Grammar), TAG (Tree Adjoining Grammar), . . . two methodological trends: knowledge-based, data-driven.

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COST PARSEME Working Groups Management Events

Languages

23 languages, 9 European language families: Celtic: Gaelic, Germanic: English, Danish, Dutsch, German, Icelandic, Norwegian, Swedish, Finno-Ugric: Estonian, Hungarian, Hellenic: Greek, Romance: French, Italian, Portuguese, Spanish, Semitic: Hebrew, Maltese, Slavic: Bulgarian, Czech, Polish, Serbian, Macedonian, Turkic: Turkish. dialects: British vs. American English, Belgian vs. Swiss vs. France French, European vs. Brazilian Portuguese.

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COST PARSEME Working Groups Management Events

Working Groups

WG1: Lexicon/Grammar Interface, WG2: Parsing Techniques for MWEs, WG3: Hybrid Parsing of MWEs, WG4: Annotating MWEs in Treebanks. Crossing barriers between . . . different levels of linguistic processing, different linguistic frameworks, different methodological frameworks. Expression of interest in at least 2 WGs from each member (at the full

proposal period).

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COST PARSEME Working Groups Management Events

Working Groups

WG1: Lexicon/Grammar Interface, WG2: Parsing Techniques for MWEs, WG3: Hybrid Parsing of MWEs, WG4: Annotating MWEs in Treebanks. Crossing barriers between . . . different levels of linguistic processing, different linguistic frameworks, different methodological frameworks. Expression of interest in at least 2 WGs from each member (at the full

proposal period).

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COST PARSEME Working Groups Management Events

Working Groups

WG1: Lexicon/Grammar Interface, WG2: Parsing Techniques for MWEs, WG3: Hybrid Parsing of MWEs, WG4: Annotating MWEs in Treebanks. Crossing barriers between . . . different levels of linguistic processing, different linguistic frameworks, different methodological frameworks. Expression of interest in at least 2 WGs from each member (at the full

proposal period).

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COST PARSEME Working Groups Management Events

WG1: Lexicon/Grammar Interface

Challenge 1 Simultaneously account for the fixed character of MWEs and their similarities to regular syntactic structures

(FR) Marie a pris le train de 18 heures. ⇒ Marie a pris un train. Marie a pris un train de 6 heures de l’apr` es-midi. (FR) Marie a pris un train de banlieu. ⇒ Marie a pris un train. Marie a pris un *train de faubourg. (FR) Le gouvernement a pris un train de mesures. / / / / ⇒ *Le gouvernement a pris un train. Le gouvernement a pris un *train d’moyens.

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COST PARSEME Working Groups Management Events

WG1: Lexicon/Grammar Interface

Challenge 2 Represent parsing phenomena at the lexicon level (agreement, discontinuity and free word order)

(FR) assistant approvisionneur, assistants approvisionneurs, assistante approvisionneuse, assistantes approvisionneuses – agree in gen. and num. (FR) bateau mouche, bateaux mouches – agree in num. only (EN) He has finally made up his bloody mind. (PL) bezwzględna większość, większość bezwzględna (‘absolute majority’) (PL) panna młoda, *młoda panna (‘bride’)

Challenge 3 Enrich existing lexicons and valence dictionaries with MWEs. Challenge 4 Design cost-saving abstract models of MWEs’ properties, automatically mapped to different grammar formalisms.

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COST PARSEME Working Groups Management Events

WG1: Lexicon/Grammar Interface

Challenge 2 Represent parsing phenomena at the lexicon level (agreement, discontinuity and free word order)

(FR) assistant approvisionneur, assistants approvisionneurs, assistante approvisionneuse, assistantes approvisionneuses – agree in gen. and num. (FR) bateau mouche, bateaux mouches – agree in num. only (EN) He has finally made up his bloody mind. (PL) bezwzględna większość, większość bezwzględna (‘absolute majority’) (PL) panna młoda, *młoda panna (‘bride’)

Challenge 3 Enrich existing lexicons and valence dictionaries with MWEs. Challenge 4 Design cost-saving abstract models of MWEs’ properties, automatically mapped to different grammar formalisms.

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COST PARSEME Working Groups Management Events

WG2: Parsing Techniques for MWEs

Challenge 1 Design interoperable MWE representation for different syntactic frameworks: HPSG, LFG, TAG, CCG, DG, . . . .

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COST PARSEME Working Groups Management Events

WG2: Parsing Techniques for MWEs

Challenge 2 Reduce the cost of grammar production. Challenge 3 Enhance parsing speed and precision by reducing spurious ambiguity in MWEs.

(FR) Il a lu ce livre d’un auteur ´ etranger. (FR) Il a lu ce livre d’un seul coup.

Challenge 4 Express the semantics of MWEs in parse structures.

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COST PARSEME Working Groups Management Events

WG2: Parsing Techniques for MWEs

Challenge 2 Reduce the cost of grammar production. Challenge 3 Enhance parsing speed and precision by reducing spurious ambiguity in MWEs.

(FR) Il a lu ce livre d’un auteur ´ etranger. (FR) Il a lu ce livre d’un seul coup.

Challenge 4 Express the semantics of MWEs in parse structures.

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COST PARSEME Working Groups Management Events

WG2: Parsing Techniques for MWEs

Challenge 2 Reduce the cost of grammar production. Challenge 3 Enhance parsing speed and precision by reducing spurious ambiguity in MWEs.

(FR) Il a lu ce livre d’un auteur ´ etranger. (FR) Il a lu ce livre d’un seul coup.

Challenge 4 Express the semantics of MWEs in parse structures.

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COST PARSEME Working Groups Management Events

WG3: Hybrid Parsing of MWEs

Challenges Cope with long-distance relations and discontinuities in probabilistic parsing. Integrate high-quality language resources in probabilistic parsing

(MWE-oriented reranking of state-of-the-art parsers).

Enhance knowledge-based parsing of MWEs with probabilistic scores. Enhance supervised methods (using scarce annotated corpora) with unsupervised ones (using unannotated corpora).

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WG4: Annotating MWEs in Treebanks

Challenges Annotation guidelines for representing MWEs in constituency and dependency treebanks. Best practices for automatically extracting lexicons and probability scores addressed in other WGs.

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COST PARSEME Working Groups Management Events

Management

Management Committee up to 2 representatives and 2 substitutes for each member country, reporting to the Domain Committee, meeting twice a year in member countries, see Rules and Procedures for Implementing COST Actions. Grant Holder Institute of Computer Science, Polish Academy of Sciences (IPIPAN), Warsaw, Poland, Scientific Representative: prof. Adam Przepiórkowski, reporting, secretariat, coordination, liaison, dublication, dissemination, participants pays their travel and stay and get reimbursed (see COST Vademecum Part B — Grant System).

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COST PARSEME Working Groups Management Events

Management

Management Committee up to 2 representatives and 2 substitutes for each member country, reporting to the Domain Committee, meeting twice a year in member countries, see Rules and Procedures for Implementing COST Actions. Grant Holder Institute of Computer Science, Polish Academy of Sciences (IPIPAN), Warsaw, Poland, Scientific Representative: prof. Adam Przepiórkowski, reporting, secretariat, coordination, liaison, dublication, dissemination, participants pays their travel and stay and get reimbursed (see COST Vademecum Part B — Grant System).

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COST PARSEME Working Groups Management Events

Steering Committee

MC Chair: Agata Savary (France), MC Vice-Chair: Adam Przepiórkowski (Poland). WG Leaders: WG1: Manfred Sailer (Germany), WG2: Yannick Parmentier (France), WG3: Michael Rosner (Malta), WG4: Victoria Ros´ en (Norway), Representatives of Early-Stage Researchers (ESRs): Pavel Straˇ n´ ak (Czech Republic), Veronika Vincze (Hungary), Coordinator of Short Term Scientific Missions (STSMs): Cvetana Krstev (Serbia), Dissemination Coordinator: Miriam Butt (Germany).

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2013-2014 Events

16-18 September 2013 Plenary meeting, MC meeting, WG meetings Polish Academy of Sciences, Warsaw, Poland March 2014 Plenary meeting, MG meeting, WG meetings An Action’s member COST country (Athens, Greece?) April 2014 MWE Workshop, possibly with a special track on PARSEME, co-location with EACL’2014 in Gothenburg, Sweden planned. Short-Term Scientific Missions see the call on the parseme-all mailing list, funding for at least 9 STSMs, priority to ESRs.

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COST PARSEME Working Groups Management Events

2013-2014 Events

16-18 September 2013 Plenary meeting, MC meeting, WG meetings Polish Academy of Sciences, Warsaw, Poland March 2014 Plenary meeting, MG meeting, WG meetings An Action’s member COST country (Athens, Greece?) April 2014 MWE Workshop, possibly with a special track on PARSEME, co-location with EACL’2014 in Gothenburg, Sweden planned. Short-Term Scientific Missions see the call on the parseme-all mailing list, funding for at least 9 STSMs, priority to ESRs.

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COST PARSEME Working Groups Management Events

2013-2014 Events

16-18 September 2013 Plenary meeting, MC meeting, WG meetings Polish Academy of Sciences, Warsaw, Poland March 2014 Plenary meeting, MG meeting, WG meetings An Action’s member COST country (Athens, Greece?) April 2014 MWE Workshop, possibly with a special track on PARSEME, co-location with EACL’2014 in Gothenburg, Sweden planned. Short-Term Scientific Missions see the call on the parseme-all mailing list, funding for at least 9 STSMs, priority to ESRs.

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COST PARSEME Working Groups Management Events

2013-2014 Events

16-18 September 2013 Plenary meeting, MC meeting, WG meetings Polish Academy of Sciences, Warsaw, Poland March 2014 Plenary meeting, MG meeting, WG meetings An Action’s member COST country (Athens, Greece?) April 2014 MWE Workshop, possibly with a special track on PARSEME, co-location with EACL’2014 in Gothenburg, Sweden planned. Short-Term Scientific Missions see the call on the parseme-all mailing list, funding for at least 9 STSMs, priority to ESRs.

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COST PARSEME Working Groups Management Events

Thank you