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Brian Murphy

(formerly Post-doctoral researcher, Lecturer)

In October 2011 I moved to Carnegie Mellon University to work in Tom Mitchell's group studying language in the brain. Please visit my new homepage at http://www.cs.cmu.edu/~bmurphy/
 
Inspiration:

How concepts and linguistic meaning are stored in the mind and brain has occupied some of our best minds for centuries. Several recent developments now offer the promise of a comprehensive answer to the question: the easy availability of enormous quantities of authentic text over the web, and the more nuanced semantic models that can be derived from this; the application of machine learning and data-mining techniques to decode cognitive states from recordings of neural data; and the development of hybrid models that combine corpus-based, psychologically-founded, and neurally-grounded representations of meaning.

Research Interests:

  • Representation of Concepts in the Mind and Brain
  • Machine Learning approaches to Mining EEG, MEG and MRI data
  • Corpus Based Approaches to Word Meaning
  • Acceptability Judgements and Grammaticality
  • Semantics and Pragmatics of Argument Structure Realisation
  • Information Hiding in Plain Text
  • Languages: English, German, Chinese (Standard/Mandarin), Spanish, Italian, Irish
Recent Events:
  • Computational Session at CAOS Workhop on the neuroscience of concepts, May 20th 2010, Rovereto (organiser)
  • First Workshop on Computational Neurolinguistics, NAACL-HLT, 6th June 2010, Los Angeles (organiser with Kaimin Chang of Carnegie Mellon, and Anna Korhonen of Cambridge University)
  • Special Session on Neural Decoding of Higher Cognitive States, ICCS, 19th/20th August, Beijing (organiser with David Melcher)
  • Tutorial on Computational Neurolinguistics, COLING, 22nd August, Beijing (instructor)
Peer-Reviewed Publications:
  • Brian Murphy, Massimo Poesio, Francesca Bovolo, Lorenzo Bruzzone, Michele Dalponte, Heba Lakany, 2011: EEG decoding of semantic category reveals distributed representations for single concepts. Brain and Language, Volume 117, Pages 12-22. [Paper]
  • Brian Murphy, Massimo Poesio, 2010: Detecting Semantic Category in Simultaneous EEG/MEG Recordings. Proceedings of the Workshop on Computational Neurolinguistics, NAACL-HLT, Los Angeles[Paper]
  • Marco Baroni, Brian Murphy, Eduard Barbu, Massimo Poesio, 2010: Strudel: A Corpus-Based Semantic Model Based on Properties and Types. Cognitive Science, Volume 34 Issue 2, Pages 222-254[Paper | Supplementary Materials]
  • Brian Murphy, Marco Baroni, Massimo Poesio, 2009: EEG Responds to Conceptual Stimuli and Corpus Semantics. Proceedings of ACL/EMNLP 2009, Singapore. [Paper]
  • Brian Murphy, Michele Dalponte, Massimo Poesio and Lorenzo Bruzzone, 2008: Distinguishing Concept Categories from Single-Trial Electrophysiological Activity. Proceedings of the Annual Meeting of the Cognitive Science Society, Washington, July 2008. [Paper | Presentation]
  • Brian Murphy and Carl Vogel, 2007: Statistically constrained shallow text marking: techniques, evaluation paradigm, and results. In Edward J. Delp III and Ping Wah Wong, (Eds.) Security, Steganography, and Watermarking of Multimedia Contents IX, 28 January-February 2007, San José. [Paper]
  • Brian Murphy and Carl Vogel, 2007: The syntax of concealment: reliable methods for plain text information hiding. In Edward J. Delp III and Ping Wah Wong, (Eds.) Security, Steganography, and Watermarking of Multimedia Contents IX, 28 January-February 2007, San José. [Paper]
  • Brian Murphy and Carl Vogel, 2005: A Comparative Evaluation of UNL Participant Relations using a Five-Language Parallel Corpus, in Cardeñosa et al (eds.), 2005, Universal Networking Language: Advances in Theory and Applications, Research in Computer Science Vol. 12, CIC, Mexico City. [Paper]
  • Brian Murphy, 2003: Tuning Themes: Finding an Appropriate Model of Roles for Translation. Poster at the 14th Irish Artificial Intelligence and Cognitive Science, Dublin, September 2003. [Paper]

Other Manuscripts and Presentations
  • Brian Murphy and Carl Vogel, 2008: An Empirical Comparison of Measurement Scales for Judgements of Acceptability. Poster at International Conference on Linguistic Evidence 2008, University of Tübingen, February 2008. [Poster]
  • Brian Murphy, Lorenzo Bruzzone, Michele Dalponte, Massimo Poesio and Heba Lakany, 2008: Predicting category specific effects in single-subject electrophysiological activity. Presentation to 26th European Workshop on Cognitive Neuropsychology 2008, Bressanone, January 2008. [Poster]
  • Massimo Poesio, Marco Baroni, Brian Murphy, Eduard Barbu, Luigi Lombardi, Abdulrahman Almuhareb, David Vinson and Gabriella Vigliocco, 2007: Speaker-Generated and Corpus-Generated Features. Presentation to Concepts Types and Frames, Heinrich Heine University, Düsseldorf, August 2007. [Presentation]
  • Brian Murphy, 2007: A Study of Notions of Participation and Discourse in Argument Structure Realisation. Doctoral Thesis, Dept. of Computer Science, Trinity College Dublin. [Thesis]
  • Lisandro Kaunitz, Brian Murphy, Lorenzo Bruzzone, Francesca Bolovo, Massimo Poesio and David Melcher, 2008: Predicting perceptual states from EEG single trial analysis. Poster at Rovereto Attention Workshop, CIMeC, University of Trento, October 2008. [Poster]
  • Brian Murphy, Carl Vogel and Conny Opitz, 2005: Cross-linguistic Empirical Analysis of Constraints on Passive. Presentation to the Symposium on Interdisciplinary Themes in Cognitive Language Research, University of Helsinki, November 2005. [Extended Abstract | Presentation]
  • Huang Chu-Ren, Elanna Tseng, Dylan Tsai and Brian Murphy, 2003: Cross-lingual Portability of Semantic relations: Bootstrapping Chinese WordNet with English WordNet Relations. Languages and Linguistics, Vol 4.3, pp509-532, Academica Sinica, Taipei. [Paper]
  • Brian Murphy, 2001: Syntactic Information Hiding in Plain Text. Masters Thesis, CLCS, Trinity College Dublin. [Thesis]

Teaching experience:
  • Undergraduate course in Computational Linguistics on Interfaces and Communication Technology programme (taught through Italian), University of Trento, 2009-2010  [Course Page]
  • Summer school course on Grammaticality Judgements as Linguistic Evidence, at the ESSLLI, University of Bordeaux, July 2009 [Course Page]
  • Undergraduate courses Introduction to Programming; Data Structures and Algorithms (taught through German);  and Technical Translation (German) on programme in Computational Linguistics, Trinity College Dublin, 2003-2006.

Professional experience:
  • Visiting Researcher (Chinese WordNet), Institute of Linguistics, Academia Sinica, Taiwan, summer 2002
  • Director of Software Development (realtime web delivery of news and markets information), Qingniao.net (a Reuters company), Beijing, 1999-2000
  • Senior Developer (realtime intranet delivery of news and markets information), Reuters, Beijing, 1997-1999
  • Webmaster (online magazine), Beijing Scene, Beijing, 1997
  • Web Developer, MEX Multimedia, Munich, 1995-1997
  • Research Assistent (scientific imaging and visualisation), Technical University of Munich, 1994