Headline Image 1 Headline Image 2 Headline Image 3 Headline Image 4

Dr William Teahan

Lecturer

Specialist Subjects: Artificial Intelligence, Multi-agent systems, Text Mining, Information Retrieval, Text Categorization, Text Compression, Natural Language Processing, Computational Linguistics, Machine Translation

I lead the Artificial Intelligence and Intelligent Agents (AIIA) research group at Bangor which carries out theoretical and applied research into artificial intelligence and intelligent autonomous agent systems. The group has broad interests in many areas including knowledge-based systems, logic, multi-agent systems, distributed systems, machine learning, data mining, artificial life, behavioural animation, computational linguistics, natural language processing, information theory and information retrieval.

My work with applying PPM compression-based language models to knowledge discovery in text (in text mining, natural language processing and text categorization) has been groundbreaking, and is now being referenced for example by papers describing state-of-the-art systems for detecting email spam, and used as a baseline model for an international evaluation on Chinese word segmentation. A multi-agent question answering system developed at Bangor using a Knowledge Grid architecture based on a new logic of �knowing aboutness� was placed 3rd at the QA track in the international evaluation at the Text Retrieval conference (TREC) in 2004. Recent work with grammatical evolution has developed software for evolving programs in Java.

Specific research has focused on applying text compression-based language models to Information Retrieval (IR), text mining (i.e. Information Extraction) and Question Answering. I have a long standing interest in the area of text compression and information theory. My research over the last few years has concentrated on the application of compression-based language models to various problems in natural language processing, computational linguistics, information retrieval, text mining (information extraction), text categorization, question answering and analysis of biomedical texts.

D.Phil, Member ACM, IEEE

 

Computer Science

Bangor University

Tel: 01248 382703

Fax: 01248 361429

Email: w.j.teahan@bangor.ac.uk

 

Personal Link