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The Ypa project (De Roeck et al., 1998) is building a system to make the information in classiied directories more accessible. BT's Yellow Pages 1 provides an example of a classiied database with which this work would be useful. Accessibility in this context means allowing users (or call center operators) to query the Yellow Pages system using Natural(More)
IPEM, for Integrated Planning, Execution and Monitoring, provides a simple, clear and well defined framework to integrate these processes. Representation integration is achieved by naturally incorporating execution and monitoring information into [Chapman, 19871 TWEAK'S partial plan representation. Control integration is obtained by using a production(More)
The development of multiplication skills was examined in a group of children ages 8 to 12 years who were taught by discovery methods. Strategies used by the children included direct retrieval, retrieval + calculation, and counting-in-series. Repeated addition was not observed. Retrieval was the fastest and least error-prone strategy; counting-in-series was(More)
There are two reasons for doing this: (i) directories like Yellow Pages contain much useful but hard-to-access information, especially in the free text in semi-display advertisements; (ii) more generally, the project is a demonstrator for exploitation of semi-structured data — data that is less systematic than database entries or logical clauses, but more(More)
The Yellow Pages Assistant (Ypa) is a natural language dialogue system which guides a user through a dialogue in order to retrieve addresses from the Yellow Pages 1. Part of the work in this project is concerned with the construction of a Backend, i.e. the database extracted from the raw input text that is needed for the online access of the addresses. Here(More)