Leon Derczynski

Research interests

  • Temporal information extraction
  • Handling noisy and terse text
  • Semantic annotation
  • Spatio-Temporal language
  • Tense and aspect in language
  • Network extraction and interpretation

Current projects

Past projects

  • TempEval-3 - A SemEval/SIGSEM task for evaluation of the state of the art in temporal information extraction
  • TrendMiner - Extracting and predicting trends from social media
  • CAVaT - Corpus Analysis and Validation for TimeML (comand-line tool)
  • TERNIP - High-precision high-recall timex annotation and normalisation
  • Temporal and Spatial Information Extraction reading group

Awards and Grants

  • 2008: EPSRC Enhanced Doctoral Training Grant.
  • 2008: Douglas Lewin prize for best final-year exam performance (equiv. dux litterarum).
  • 2006, 2007: Nanjing University of Aeronautics and Astronautics' Best English language teacher.

Contact

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

You may also find on Twitter; @LeonDerczynski.

My Academic CV.

I am currently visiting the Data Intensive Systems group at Aarhus University; my office is in the Nygaard building, room 342.

Leon Derczynski

Selected references

    2013
  1. Kalina Bontcheva, Leon Derczynski. 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).
  2. 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).
  3. 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).
  4. Leon Derczynski, Hector Llorens, Naushad UzZaman. 2013. TimeML-strict: clarifying temporal annotation.
    - CoRR arXiv:1304.7289
  5. 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]
  6. Leon Derczynski, Robert Gaizauskas. 2013. Empirical Validation of Reichenbach's Tense Framework.
    - In Proceedings of the 10th Conference on Computational Semantics (IWCS 2013). [slides]
  7. 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]
    8. 2012
  8. 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
  9. 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]
  10. 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]
  11. 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]
    12. 2011
  12. 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).
  13. Leon Derczynski, Robert Gaizauskas. 2011. A Corpus-based Study of Temporal Signals.
    - In Proceedings of the 6th Corpus Linguistics Conference (CL 2011). [slides] [bib]
  14. 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]
    15. 2010
  15. Leon Derczynski, Robert Gaizauskas. 2010. Using Signals to Improve Automatic Classification of Temporal Relations.
    - In Proceedings of the 15th ESSLLI StuS session. [slides] [bib]
  16. 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]
  17. 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]
    18. 2008
  18. 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]
  19. Leon Derczynski, Jun Wang, Ben Solway, Richard Shaw. 2008. Question Answering Against Very Large Text Collections.
    - In Department of Computer Science, University of Sheffield - Masters' Theses.
    20. 2006
  20. Leon Derczynski, Amanda Sharkey. 2006. Machine learning techniques for document selection.
    - In Department of Computer Science, University of Sheffield - dissertations. [poster]
  21. Leon Derczynski. 2006. Review of: Challenges of migrating to agile methodologies - Nerur, S., Mahapatra, R.K., Mangalaraj, G. [slides]

Resources

  • TB_sig: revised and extended TimeBank, including extra signals, and any events/links associated with them. tb_sig.tar.bz2

Related links

Personal
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