The University of Sheffield
Department of Computer Science

Leon Derczynski

Research interests

Contact

I prefer email: leon@dcs.shef.ac.uk

You may also find me on Twitter: @LeonDerczynski.

My Academic CV.

Leon Derczynski

News

Talks

August 2014
June 2014
May 2014
April 2014
Recent past

Current projects

References

    2014
  1. Steven Bethard, Leon Derczynski, James Pustejovsky, Marc Verhagen. 2014. Clinical TempEval.
    - CoRR arXiv 1403.4928.
  2. Leon Derczynski, Kalina Bontcheva. 2014. Spatio-temporal grounding of claims made on the web, in Pheme.
    - in Proceedings of the 10th Joint ACL - ISO Workshop on Interoperable Semantic Annotation (ISA 10).
  3. Leon Derczynski, Kalina Bontcheva. 2014. Passive-Aggressive Sequence Labeling with Discriminative Post-Editing for Recognising Person Entities in Tweets.
    - In Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2014) (short).
  4. Leon Derczynski, Camilla Vilhelmsen Field, Kenneth S. Bøgh. 2014. DKIE: Open Source Information Extraction for Danish.
    - In Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2014) (demo).
  5. Kalina Bontcheva, Ian Roberts, Leon Derczynski, Dominic Rout. 2014. The GATE Crowdsourcing Plugin: Crowdsourcing Annotated Corpora Made Easy.
    - In Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2014) (demo).
  6. Marta Sabou, Kalina Bontcheva, Leon Derczynski, Arno Scharl. 2014. Corpus Annotation through Crowdsourcing: Towards Best Practice Guidelines.
    - In Proceedings of the 9th Conference on International Language Resources and Evaluation (LREC 2014).
  7. Kalina Bontcheva, Leon Derczynski, Ian Roberts. 2014. Crowdsourcing Named Entity Recognition and Entity Linking Corpora.
    - In Nancy Ide and James Pustejovsky, eds.: The Handbook of Linguistic Annotation.
  8. 2013
  9. Leon Derczynski, Robert Gaizauskas. 2013. Information Retrieval for Temporal Bounding.
    - In Proceedings of the 4th International Conference on the Theory of Information Retrieval (ICTIR 2013) (acceptance rate 22%). [poster] [bib]
  10. Matteo Brucato, Leon Derczynski, Hector Llorens, Kalina Bontcheva, Christian S. Jensen. 2013. Recognising and Interpreting Named Temporal Expressions.
    - In Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2013) (long, acceptance rate 11.8%). [slides]
  11. Kalina Bontcheva, Leon Derczynski, Adam Funk, Mark A. Greenwood, Diana Maynard, Niraj Aswani. 2013. TwitIE: An Open-Source Information Extraction Pipeline for Microblog Text.
    - In Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2013) (long, acceptance rate 11.8%). [code] [slides]
  12. Leon Derczynski, Alan Ritter, Sam Clark, Kalina Bontcheva. 2013. Twitter Part-of-Speech Tagging for All: Overcoming Sparse and Noisy Data.
    - In Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2013) (long, acceptance rate 11.8%). [code] [slides]
  13. Leon Derczynski, Robert Gaizauskas. 2013. Temporal Signals Help Label Temporal Relations.
    - In Proceedings of the 51st meeting of the Association for Computational Linguistics (ACL 2013) (short, acceptance rate 24%). [bib] [poster]
  14. Leon Derczynski, Kalina Bontcheva. 2013. Mining Social Media with Linked Open Data, Entity Recognition, and Event Extraction.
    - In Proceedings of the 3rd Workshop on Data Extraction and Object Search (DEOS 2013). [slides]
  15. Naushad UzZaman, Hector Llorens, Leon Derczynski, James Allen, Marc Verhagen, James Pustejovsky. 2013. SemEval-2013 Task 1: TempEval-3: Evaluating Events, Time Expressions, and Temporal Relations.
    - In Proceedings of the 7th International Workshop on Semantic Evaluation (SemEval 2013). [slides] [bib]
  16. Leon Derczynski. 2013. Determining the Types of Temporal Relations in Discourse.
    - In PhD theses: Department of Computer Science, University of Sheffield, UK. [bib] [slides]
  17. Leon Derczynski, Diana Maynard, Niraj Aswani, Kalina Bontcheva. 2013. Microblog-Genre Noise and Impact on Semantic Annotation Accuracy.
    - In Proceedings of the 24th ACM Conference on Hypertext and Social Media (HT 2013) (acceptance rate 16.7%). Shortlisted for SIGWEB Ted Nelson award. [slides] [bib]
  18. Leon Derczynski, Hector Llorens, Naushad UzZaman. 2013. TimeML-strict: clarifying temporal annotation.
    - CoRR arXiv:1304.7289 [bib]
  19. Leon Derczynski, Robert Gaizauskas. 2013. Empirical Validation of Reichenbach's Tense Framework.
    - In Proceedings of the 10th Conference on Computational Semantics (IWCS 2013). [slides] [bib] (Kevin Knight remembered this talk for its distinctiveness when we met four months after I gave it, pretty cool huh!)
  20. Leon Derczynski, Bin Yang, Christian S. Jensen. 2013. Towards Context-Aware Search and Analysis on Social Media Data.
    - In Proceedings of the 16th Conference on Extending Database Technology (EDBT 2013) (track acceptance rate 13.6%). [slides] [bib]
  21. 2012
  22. Naushad UzZaman, Hector Llorens, James Allen, Leon Derczynski, Marc Verhagen, James Pustejovsky. 2012. TempEval-3: Evaluating Events, Time Expressions, and Temporal Relations.
    - CoRR arXiv:1206.5333v1 [bib]
  23. Robert Gaizauskas, Emma Barker, Ching-Lan Chang, Leon Derczynski, Michael Phiri, Chengzhi Peng. 2012. Applying ISO-Space to Healthcare Facility Design Evaluation Reports.
    - In Proceedings of the 7th Joint ISO-ACL Workshop on Interoperable Semantic Annotation (ISA 7). [bib]
  24. Leon Derczynski, Hector Llorens, Estela Saquete. 2012. Massively Increasing TIMEX3 Resources: A Transduction Approach.
    - In Proceedings of the 8th Conference on International Language Resources and Evaluation (LREC 2012). [code] [poster] [bib]
  25. Hector Llorens, Leon Derczynski, Robert Gaizauskas, Estela Saquete. 2012. TIMEN: An Open Temporal Expression Normalization Resource.
    - In Proceedings of the 8th Conference on International Language Resources and Evaluation (LREC 2012). [code] [slides] [bib]
  26. 2011
  27. Amev Burman, Arun Jayapal, Sathish Kannan, Madhu Kavilikatta, Ayman Alhelbawy, Leon Derczynski, Robert Gaizauskas. 2011. USFD at KBP 2011: Entity Linking, Slot Filling and Temporal Bounding.
    - In Proceedings of the 4th Text Analysis Conference (TAC 2011). [bib]
  28. Leon Derczynski, Robert Gaizauskas. 2011. A Corpus-based Study of Temporal Signals.
    - In Proceedings of the 6th Corpus Linguistics Conference (CL 2011). [slides] [bib]
  29. Leon Derczynski, Robert Gaizauskas. 2011. An Annotation Scheme for Reichenbach's Verbal Tense Structure.
    - In Proceedings of the 6th Joint ACL - ISO Workshop on Interoperable Semantic Annotation (ISA 6). [slides] [bib]
  30. 2010
  31. Leon Derczynski, Robert Gaizauskas. 2010. Using Signals to Improve Automatic Classification of Temporal Relations.
    - In Proceedings of the 15th ESSLLI StuS session. [slides] [bib]
  32. Leon Derczynski, Robert Gaizauskas. 2010. USFD2: Annotating Temporal Expresions and TLINKs for TempEval-2.
    - In Proceedings of the 5th Workshop on Semantic Evaluations (TempEval-2), ACL. [code] [bib] [poster]
  33. Leon Derczynski, Robert Gaizauskas. 2010. Analysing Temporally Annotated Corpora with CAVaT.
    - In Proceedings of the 7th Conference on International Language Resources and Evaluation (LREC 2010). [code] [bib]
  34. 2008
  35. Leon Derczynski, Mark A Greenwood, Robert Gaizauskas, Jun Wang. 2008. A data driven approach to query expansion in question answering.
    - In Coling 2008: Proceedings of the 2nd workshop on Information Retrieval for Question Answering (IR4QA 2). [slides] [bib]
  36. Leon Derczynski, Jun Wang, Ben Solway, Richard Shaw. 2008. Question Answering Against Very Large Text Collections.
    - Project Report, in Department of Computer Science, University of Sheffield - Masters' Theses.
  37. 2006
  38. Leon Derczynski, supervised by Amanda Sharkey. 2006. Machine learning techniques for document selection.
    - In Department of Computer Science, University of Sheffield - dissertations. [poster] [bib]

Awards and Grants

Resources

Past projects

Related links

Quotes

"The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn, and relearn." -- Alvin Toffler
"All models are wrong, but some are useful." -- George Box
"Peer review is boosting with three weak learners. Apply salt liberally." -- LD

Personal

The University of Sheffield
Western Bank
Sheffield S10 2TN
UK