The University of Sheffield
Department of Computer Science

Leon Derczynski

Pronounced "der-CHIN-ski"

Research interests

Contact

I prefer email: leon.d@sheffield.ac.uk

You may also find me on Twitter: @LeonDerczynski.

My Academic CV.

By post:
Dr. Leon Derczynski
Department of Computer Science
211 Portobello
Sheffield
S1 4DP
United Kingdom

Leon Derczynski

News

Talks

February 2016
September 2015
June 2015
May 2015
January 2015

Current projects

Selected Publications

See also my full publications list.

    2016
  1. Leon Derczynski, Sean Chester. 2016. Generalised Brown Clustering and Roll-up Feature Generation.
    - in 30th AAAI Conference on Artificial Intelligence (AAAI) (full paper, acceptance rate 26%). [code] [sample data]
  2. 2015
  3. Leon Derczynski, Diana Maynard, Giuseppe Rizzo, Marieke van Erp, Genevieve Gorrell, Raphaël Troncy, Johann Petrak, Kalina Bontcheva. 2015. Analysis of Named Entity Recognition and Linking for Tweets.
    - in Information Processing and Management (IPM). [data]
  4. Steven Bethard, Leon Derczynski, Guergana Savova, James Pustejovsky, Marc Verhagen. 2015. SemEval-2015 Task 6: Clinical TempEval.
    - in Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015).
  5. Martin Leginus, Leon Derczynski, Peter Dolog. 2015. Enhanced Information Access to Social Streams through Word Clouds with Entity Grouping.
    - in Proceedings of the 11th International Conference on Web Information Systems and Technologies (WEBIST) (full paper, acceptance rate 14%). Winner of Best Student Paper award.
  6. 2014
  7. 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, acceptance rate 23.1%). [slides] [video]
  8. Leon Derczynski, C. V. 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).
  9. 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). [docs] [code in GATE]
  10. 2013
  11. 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]
  12. 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]
  13. 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]
  14. 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]
  15. 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]
  16. 2012
  17. 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]

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
"Human knowledge is expressed in language. So computational linguistics is very important." -- Mark Steedman

Personal

The University of Sheffield
Western Bank
Sheffield S10 2TN
UK