In the paper some problems connected with a process of knowledge discovery are considered. These problems are reduced to the set cover problem. It is known that under a plausible assumption on the class \(N P\) the greedy algorithm is close to best approximate polynomial algorithms for the set cover
Problems of context and knowledge
β Scribed by Jacques Jayez
- Publisher
- Springer Netherlands
- Year
- 1989
- Tongue
- English
- Weight
- 973 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0920-427X
No coin nor oath required. For personal study only.
β¦ Synopsis
In spite of alleged differences in purpose, descriptive and computational linguistics share many problems, due to the fact that any precise study on language needs some form of knowledge representation. This constraint is mostly apparent when interpretation of sentences takes into account elements of the so-called "context". The parametrization of context, i.e. the explicit listing of features relevant to some interpretation task, is difficult because it requires flexible formal structures for understanding or simulating inferential behaviour, as well as a large amount of information about conventional structures in the given language. This paper aims at illustrating major difficulties in these two fields, in relation with the necessity of a contextual approach. It offers a (clearly partial) enumeration of open problems in the representation of commonsense knowledge and language-dependent structures, with some attempt to delineate future solutions.
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