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Joint conference of the 47th Annual Meeting of the Association for Computational Linguistics and
the 4th International Joint Conference on Natural Language Processing of the Asian Federation of Natural Language Processing

Call for Papers

ACL-IJCNLP 2009 2nd Call for Papers

Joint Conference of
the 47th Annual Meeting of the Association for Computational Linguistics
the 4th International Joint Conference on Natural Language Processing of
the Asian Federation of Natural Language Processing

August 2 - 7, 2009

Full Paper Submission Deadline: 11:59PM February 22, 2009 Singapore Time (GMT +8)
Full paper submission has been closed.

Short Paper Submission Deadline: 11:59PM April 26, 2009 Singapore Time (GMT +8)

For the first time, the flagship conferences of the Association of Computational Linguistics (ACL) and the Asian Federation of Natural Language Processing (AFNLP) --the ACL and IJCNLP -- are jointly organized as a single event. The conference will cover a broad spectrum of technical areas related to natural language and computation. ACL-IJCNLP 2009 will include full papers, short papers, oral presentations, poster presentations, demonstrations, tutorials, and workshops. The conference invites the submission of papers on original and unpublished research on all aspects of computational linguistics.

Important Dates:

  • Feb 22, 2009    Full paper submissions due;
  • Apr 12, 2009    Full paper notification of acceptance;
  • Apr 26, 2009    Short paper submissions due;
  • May 17, 2009    Camera-ready full papers due;
  • May 31, 2009    Short Paper notification of acceptance;
  • Jun 7, 2009       Camera-ready short papers due;
  • Aug 2-7, 2009   ACL-IJCNLP 2009

Topics of interest:

Topics include, but are not limited to:

  • Phonology/morphology, tagging and chunking, and word segmentation
  • Grammar induction and development
  • Parsing algorithms and implementations    
  • Mathematical linguistics and grammatical formalisms
  • Lexical and ontological semantics
  • Formal semantics and logic
  • Word sense disambiguation
  • Semantic role labeling
  • Textual entailment and paraphrasing   
  • Discourse, dialogue, and pragmatics
  • Language generation
  • Summarization
  • Machine translation
  • Information retrieval
  • Information extraction
  • Sentiment analysis and opinion mining
  • Question answering
  • Text mining and natural language processing applications
  • NLP in vertical domains, such as biomedical, chemical and legal text
  • NLP on noisy unstructured text, such as email, blogs, and SMS         
  • Spoken language processing
  • Speech recognition and synthesis
  • Spoken language understanding and generation
  • Language modeling for spoken language
  • Multimodal representations and processing
  • Rich transcription and spoken information retrieval
  • Speech translation
  • Statistical and machine learning methods
  • Language modeling for text processing
  • Lexicon and ontology development
  • Treebank and corpus development
  • Evaluation methods and user studies
  • Science of annotation


Full papers:

Submissions must describe substantial, original, completed and unpublished work. Wherever appropriate, concrete evaluation and analysis should be included. Submissions will be judged on correctness, originality, technical strength, significance, relevance to the conference, and interest to the attendees. Each submission will be reviewed by at least three program committee members.

Full papers may consist of up to eight (8) pages of content, plus one extra page for references, and will be presented orally or as a poster presentation as determined by the program committee.  The decisions as to which papers will be presented orally and which as poster presentations will be based on the nature rather than on the quality of the work. There will be no distinction in the proceedings between full papers presented orally and those presented as poster presentations.  

The deadline for full papers is 11:59PM February 22, 2009 Singapore time (GMT+8).  Submission is electronic using paper submission software at:

To streamline the reviewing process, authors are strongly encouraged to submit abstracts one week before the full paper submission deadline.

Short papers:

ACL-IJCNLP 2009 solicits short papers as well. Short paper submissions must describe original and unpublished work. The short paper deadline is just about three months before the conference to accommodate the following types of papers:

  • A small, focused contribution
  • Work in progress
  • A negative result
  • An opinion piece
  • An interesting application nugget

Short papers will be presented in one or more oral or poster sessions, and will be given four pages in the proceedings. While short papers will be distinguished from full papers in the proceedings, there will be no distinction in the proceedings between short papers presented orally and those presented as poster presentations. Each short paper submission will be reviewed by at least two program committee members. The deadline for short papers is 11:59PM April 26, 2009 Singapore time (GMT+8). Submission is electronic using paper submission software at:


Full paper submissions should follow the two-column format of ACL-IJCNLP 2009 proceedings without exceeding eight (8) pages of content plus one extra page for references.  Short paper submissions should also follow the two-column format of ACL-IJCNLP 2009 proceedings, and should not exceed four (4) pages, including references. We strongly recommend the use of ACL LaTeX style files or Microsoft Word style files tailored for this year's conference, which are available on the conference website under Information for Authors. Submissions must conform to the official ACL-IJCNLP 2009 style guidelines, which are contained in the style files, and they must be electronic in PDF.

As the reviewing will be blind, the paper must not include the authors' names and affiliations. Furthermore, self-references that reveal the author's identity, e.g., "We previously showed (Smith, 1991) ...", must be avoided. Instead, use citations such as "Smith previously showed (Smith, 1991) ...". Papers that do not conform to these requirements will be rejected without review. 

Multiple-submission policy:

Papers that have been or will be submitted to other meetings or publications must provide this information at submission time. If ACL-IJCNLP 2009 accepts a paper, authors must notify the program chairs by April 19, 2009 (full papers) or June 7, 2009 (short papers), indicating which meeting they choose for presentation of their work.  ACL-IJCNLP 2009 cannot accept for publication or presentation work that will be (or has been) published elsewhere. 

Mentoring service:

ACL is providing a mentoring (coaching) service for authors from regions of the world where English is less emphasized as a language of scientific exchange. Many authors from these regions, although able to read the scientific literature in English, have little or no experience in writing papers in English for conferences such as the ACL meetings. The service will be arranged as follows. A set of potential mentors will be identified by Mentoring Service Chairs Ng, Hwee Tou (NUS, Singapore) and Reeder, Florence (Mitre, USA), who will organize this service for ACL-IJCNLP 2009. If you would like to take advantage of the service, please upload your paper in PDF format by January 14, 2009 for long papers and March 18 2009 for short papers using the paper submission software for mentoring service available at:

An appropriate mentor will be assigned to your paper and the mentor will get back to you by February 8 for long papers or April 12 for short papers, at least 2 weeks before the deadline for the submission to the ACL-IJCNLP 2009 program committee.

Please note that this service is for the benefit of the authors as described above. It is not a general mentoring service for authors to improve the technical content of their papers.

If you have any questions about this service please feel free to send a message to Ng, Hwee Tou (nght[at] or Reeder, Florence (floreederacl[at]

General Conference Chair:

Su, Keh-Yih (Behavior Design Corp., Taiwan; kysu[at]

Program Committee Chairs:

Su, Jian (Institute for Infocomm Research, Singapore; sujian[at]
Wiebe, Janyce (University of Pittsburgh, USA; janycewiebe[at]

Area Chairs:

Agirre, Eneko (University of Basque Country, Spain; e.agirre[at]
Ananiadou, Sophia (University of Manchester, UK; sophia.ananiadou[at]
Belz, Anja (University of Brighton, UK; a.s.belz[at]
Carenini, Giuseppe (University of British Columbia, Canada; carenini[at]
Chen, Hsin-Hsi (National Taiwan University, TaiWan, hh_chen[at] 
Chen, Keh-Jiann (Sinica, Tai Wan, kchen[at]
Curran, James (University of Sydney, Australia; james[at]
Gao, Jian Feng (MSR, USA; jfgao[at]
Harabagiu, Sanda (University of Texas at Dallas, USA, sanda[at]
Koehn, Philipp (University of Edinburgh, UK; pkoehn[at]
Kondrak, Grzegorz (University of Alberta, Canada; kondrak[at]
Meng, Helen Mei-Ling (Chinese University of Hong Kong, Hong Kong; hmmeng[at] )
Mihalcea, Rada (University of North Texas, USA; rada[at]
Poesio, Massimo(University of Trento, Italy; poesio[at]   
Riloff, Ellen (University of Utah, USA; riloff[at]
Sekine, Satoshi (NewYork University, USA; sekine[at]
Smith, Noah (CMU, USA; nasmith[at]
Strube, Michael (EML Research, Germany; strube[at]
Suzuki, Jun (NTT, Japan; jun[at]
Wang, Hai Feng (Toshiba, China; wanghaifeng[at]

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