GATE and the Semantic Web                                                                                                                             GATE and the Semantic Web Hamish Cunningham, Kalina Bontcheva, Wim Peters, Marin Dimitrov1, Atanas Kiryakov1, Department of Computer Science, University of Sheffield 1OntoText Lab, Sirma AI Ltd. Brief intro to GATE (a General Architecture for Text Engineering), Hand waving about LT and the Semantic Web, Demo 1(7)

A Ubiquitous Permeable Web                                                                                                                             A Ubiquitous Permeable Web The next generation of the web must be: ubiquitous: semantics for every device, every organisation, every individual; permeable: allow contextual data to penetrate and persist; companionable: able to engage with us via multiple natural modalities. Roles for Language Technology: discovery of semantics (ubiquity); mediating between context and personal semantic memories (permeability); conversing with people and the semantic web (companionableness). 2(7)

Critical Mass for the Semantic Web                                                                                                                             Critical Mass for the Semantic Web The SW: machine processable, repurposable data to compliment hypertext But: semantics = 0.0000000...% of the Web How to achieve critical mass? Huge scale automatic annotation. Requirements: Huge scale: – freely available to all EU citizens – distributed (over a Grid) – re-purposeable (delivered as Web Services) Portability and robustness via: – simple and therefore shallow HLT methods – +ve and –ve learning – analogs of IPSEs for computer-literate users 3(7)

                                                                                                                            GATE is: An architecture A macro-level organisational picture for LE software systems. A framework For programmers, GATE is an object-oriented class library that implements the architecture. A development environment For language engineers, computational linguists et al, GATE is a graphical development environment bundled with a set of tools for doing e.g. Information Extraction. Some free components... ...and wrappers for other people's components Tools for: evaluation; visualisation/edit; persistence; IR; IE; dialogue; ontologies; etc. Free software (LGPL). Download at http://gate.ac.uk/download/ 4(5)

Architectural principles                                                                                                                             Architectural principles Non-prescriptive, theory neutral (strength and weakness) Re-use, interoperation, not reimplementation (e.g. v1 used LT-NSL for SGML input; v2 talks to other XML-based systems, APIs and standards) (Almost) everything is a component, and component sets are user-extendable Component-based development An OO way of chunking software: Java Beans GATE components: CREOLE = modified Java Beans (Collection of REusable Objects for Language Engineering) The minimal component = 10 lines of Java, 10 lines of XML, 1 URL. 5(7)

Displaying Multilingual Data                                                                                                                             Displaying Multilingual Data All the visualisation and editing tools for ML LRs use enhanced Java facilities: 6(7)

GATE demo Components and the main UI; the resources tree                                                                                                                             GATE demo Components and the main UI; the resources tree Document formats, databases IE, IR, annotation, evaluation, WordNet Ontologies, OntoGazetteer, Protégé, DAML export 7(7)