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By Karen Sparck Jones

This entire cutting-edge publication is the 1st dedicated to the real and well timed factor of comparing NLP structures. It addresses the entire zone of NLP process assessment, together with goals and scope, difficulties and methodology.
The authors offer a wide-ranging and cautious research of overview suggestions, bolstered with vast illustrations; they relate structures to their environments and boost a framework for correct evaluate. The dialogue of ideas is done via an in depth assessment of perform and methods within the box, masking either platforms for particular initiatives, like translation, and center language processors. The technique classes drawn from the research and assessment are utilized in a sequence of instance circumstances. A finished bibliography, an issue index, and time period word list are included.

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Additional info for Evaluating Natural Language Processing Systems: An Analysis and Review

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This means that any way the system's objective can be stated in a sufficiently concrete form to serve as a base for system design is necessarily an approximation. However quite apart from the central, shared requirement for relevant documents, user's needs can differ in many ways beside those leading to differences in judging relevance based on document content. e. g. using speed of satisfaction? For example User 1 needs any document now, User 2 needs the best document by the end of the week, other users may need books on the shelves to browse through, may need books got by inter-library loan, may need up-to-date documents as soon as possible, and so forth.

However the setup has now to be viewed as providing the environmental data variables which constrain the system. The sequence of views of the illustrative NLP system we will consider here shows how intricate the relations between the system and the other constituents of its setup in evaluation are; how criteria can change with changes in setup (and indeed also system), either because quite different criteria are appropriate or because, when one setup is included in another, there are transformation effects as criteria are reinterpreted are applicable to a particular setup, for instance when ~outer' criteria are reapplied as 'inner' ones.

3 Applicability to N L P It seems clear, especially when considering library or information setups as wholes and from the point of view of the properties of their user communities, that the concepts and methodologies of economic and social research are relevant, whatever problems there may be in capturing and quantifying information. g. g. indexing) needed to evaluate the central distinctive area of information system and setup performance, depend on the development and application of concepts that are appropriate to this particular field, for example of information need and indexing function.

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