Seminar - Dr. Ann Copestake
Speaker: | Dr. Ann Copestake (University of Cambridge) |
Title: | Robust Semantic Processing for Information Extraction |
Date: | 2pm, 13th January, 2006 |
Location: | Lecture Theatre E7, Renold Building (building 8 on the campus map) |
Abstract: | Natural language processing techniques have different strengths and
weaknesses. Shallow processing may be very fast and robust, but extracts
limited information. Deep processors can produce detailed semantic representations,
but are relatively slow and brittle and require much more knowledge.
Various approaches to building combined systems have been tried, for
instance so that deep processing is only invoked on regions of text which
have been identified as interesting by shallow processors. But different
processors typically assume very different representations, which makes
it difficult to combine them flexibly. We have developed a common semantic representation language (Robust Minimal Recursion Semantics: RMRS) for deep and shallow processing. Shallow processors provide a representation which is compatible with deep processing, but relatively underspecified. In the Deep Thought project and subsequent work, we have demonstrated that various systems (including part-of-speech taggers, noun phrase chunkers, named entity recognisers, robust parsers and deep parsers) can be adapted to output RMRSs. Information extraction systems can be built which utilise RMRS markup as a base. In a current project, SciBorg, we are further developing this approach and applying it to Chemistry. We treat the different processing stages as providing levels of standoff annotation with respect to the scientific text. Our aim is to provide infrastructure that can be used by Chemistry researchers to support a variety of tasks, including enhanced search, information extraction and ontology expansion. |
Featured News
- 1st Workshop on Misinformation Detection in the Era of LLMs - Presentation slides now available
- Prof. Ananiadou appointed Deputy Director of the Christabel Pankhurst Institute
- ELLIS Workshop on Misinformation Detection - Presentation slides now available
- Prof. Sophia Ananiadou accepted as an ELLIS fellow
- BioNLP 2025 and Shared Tasks accepted for co-location at ACL 2025
- Prof. Junichi Tsujii honoured as Person of Cultural Merit in Japan
Other News & Events
- AI for Research: How Can AI Disrupt the Research Process?
- CL4Health @ NAACL 2025 - Extended submission deadline - 04/02/2025
- Invited talk at the 15th Marbach Castle Drug-Drug Interaction Workshop
- Participation in panel at Cyber Greece 2024 Conference, Athens
- Shared Task on Financial Misinformation Detection at FinNLP-FNP-LLMFinLegal