DRAVIDIAN WORDNETS.Arulmozi

Dravidian University

29 April 2013

Tamil Thesaurus

• Preliminary work on lexical semantics.• Monumental work on Tamil Thesaurus.

• Ontologicial classification of Tamil Vocabulary

• Rajendran, S. (2001) tamizhc coRkaLanjciyam. (in Tamil).Tamil University Publication.

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Domains in Tamil Thesaurus

•Tamil vocabulary is classified into four major domains: • Entities• Abstracts• Events and • Relationals

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parumaippeyarkaL`concrete nouns

'

aHRinaippeyarkaL`irrational nouns'

uyirillaatavai`non-living beings'

uruvaakkiya maRRum patananjceyta poruTkaL`manufactured and processed items'

kaTTappaTTavai`constructed'

Lexical Hierarchy of the Domain `Construction’

NounsRelations ExampleSynonymy viiTu ‘house’ - illam `house‘Hypernymy-Hyponymy paLLi 'school' – kalviccaalai

'educational institution‘Hyponym-Hypernymy kalluuri 'college' –

aracukkalluuri `govt college‘Holonymy-Meronymy ndaaRkaali 'chair' - kaal 'leg‘Meronymy-Holonymy cakkaram 'wheel' to vaNTi

'cart‘Related Verb paTittal ‘reading’ – paTi ‘read’ Coordinate terms kooyil `temple' – macuuti

'mosque'

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Verbs

Relations Example

Synonym paTi ‘read’ – payilu ‘read’

Hypernymy cuvai ‘taste’ – uNar

Troponymy keeL ‘ask’– kenjcu ‘plead’

Nominal paruku `drink’ – parukutal `drinking’

Related Noun kaNTupiTi `discover’ – kaNTupiTippu

`discovery’

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Tamil WordNetObjective: To build a WordNet for Tamil to enhance machine translation

Resources: Tamil Thesaurus, Technical Glossaries (Tamil University Publications), Princeton English WordNet

Funding Agency: Tamil Software Development Fund, Tamil Virtual University - 4 lacs

Time Frame: 18 months

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DetailsSoftware used

Front-end – Java Back-end - Mysql Database

Project Deliverables50k root words Relationships codedStand-alone and web-based interfaceEmbedded morphological analyser

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Statistics

Total Words: 50497Unique Senses: 41013

Nouns: 46710Verbs: 2881Adjectives: 416Adverbs: 490

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Total Words: 50497Unique Senses: 41013

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Nouns Verbs Adjectives Adverbs

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Project Completed (2004)

http://www.nrcfosshelpline.in/code/wiki/TamilWordnet

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Standalone version – Tamil WordNet (Snapshot)29 April 2013

Standalone version – Tamil WordNet (Snapshot)29 April 2013

Web-version – Tamil WordNet (Snapshot)

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Web-version – Tamil WordNet (Snapshot)29 April 2013

First Effort on Dravidian Languages

• National Workshop on WordNet for Dravidian Languages

• 2-3 June 2003• Organized by AU-KBC Research Centre, Chennai, Central Institute of Indian Languages, Mysore and Tamil University.

• Hands-on experience on specified domain – construction

• Report available on Global WordNet website

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MHRD ProjectCreation of Machine Translation tools and resources for English to Dravidian Languages: Pilot Study

to develop Machine Translation(MT) system and needed linguistic resources for English-Dravidian languages(Tamil, Malayalam, Telugu and Kannada),

This would facilitate the creation of rich educational contents in Indian languages.

This research effort is to make all the tools and translation system to be based on Machine Learning methodologies so that computer graduates and other such non-linguists are able to immediately participate in the national mission on literacy by contributing additional tools for language translation.

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Modules• Module 1: Machine Translation

• aims at developing teaching material corresponding to the tools developed so that it can be delivered as part of undergraduate computer science and engineering curriculum on data mining/machine learning.

• This will ensure a critical amount of man power required for sustaining translation effort needed for national mission on education.

• Module 2: Training• aims at training 500 faculties selected from across the country on

machine translation methodologies using machine learning techniques.

• Module 3: Dravidian WordNet• aims at developing a Dravidian WordNet required for translation.

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Total Budget• IIT Bombay – 15 lacs• Amrita University – 40 lacs• Tamil University – 15 lacs• University of Hyderabad – 15 lacs• Dravidian University – 15 lacs• Time Frame

• 12 months• March 30, 2009 – March 29, 2010

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Work done• Part of a one year Pilot project involving Tamil, Telugu, Malayalam and Kannada

• Funding Agency: Ministry of HRD• Duration: 18 months (July 2009-Dec 2010)• Deliverable: 13k synsets• 7k synsets linked to IndoWordNet, available at http://www.cfilt.iitb.ac.in/wordnet/webhwn/wn.php

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Statistics on Dravidian WordNet

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Publications`Tamil WordNet’, Proceedings of the Fifth Global WordNet

Conference, IIT-Bombay, 31 Jan-4 Feb 2010 (S.Rajendran)`Building a WordNet’ for Dravidian Languages, Proceedings of

the Fifth Global WordNet Conference, IIT-Bombay, 31 Jan-4 Feb 2010 (S.Rajendran, S.Gopakumar, V.Dhanalakshmi)

`Representation of Kinship in WordNet’, Proceedings of the 9th International Tamil Internet Conference, Coimbatore, 23-27 June 2010 (S.Arulmozi)

`Polysemy in Tamil and other Indian Languages’, Proceedings of the Fifth Global WordNet Conference, IIT-Bombay, 31 Jan-4 Feb 2010 (S.Arulmozi & Panchanan Mohanty)

`Telugu WordNet’, Proceedings of the Fifth Global WordNet Conference, IIT-Bombay, 31 Jan-4 Feb 2010 (S.Arulmozi)

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First IndoWordNet Workshop• Amrita University• 11-14 June 2009• Necessity for developing linked WordNets of different

languages of India was stressed• Challenges such as language divergence, lexical semantics,

embedding WordNet in MT and cross-lingual search applications can be achieved

• Participation from groups: Hindi, Marathi, Sanskrit, Nepali, Assamese, Bodo, Manipuri, Konkani, Kashmiri, Tamil, Telugu, Malayalam, Kannada

• Proposal on Indhradhanush

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Dravidian WordNet• Present Project • Funded by DIT.

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LinksTamil WordNet – Open Source http://www.nrcfosshelpline.in/code/wiki/TamilWordnetVerbNet (English) http://verbs.colorado.edu/~mpalmer/projects/verbnet.htmlPrinceton English WordNet

http://wordnet.princeton.edu/Global WordNet Association

http://www.globalwordnet.org/WordNets in the World

http://www.globalwordnet.org/gwa/wordnet_table.htmWordNet Bibliography

http://lit.csci.unt.edu/~wordnet/IndoWordNethttp://www.cfilt.iitb.ac.in/wordnet/webhwn/wn.php

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Thank you!

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