Research in Natural Language Understanding
Quarterly technical progress rept. no. 4, 1 Jun-31 Aug 1978
BOLT BERANEK AND NEWMAN INC CAMBRIDGE MA
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This report contains an annual summary of BBNs ARPA-sponsored natural language understanding project and two Technical Notes KLONEs Progress, by R.J. Brachman, and Generalizations of ATN Grammars, by W.A. Woods. The Annual summary includes a list of publications of the project and an overview of the first years work. The first Technical Note focuses on the progress in the development of the KLONE knowledge representation system, an implementation of Brachmans Structured Inheritance Networks. The second describes some generalizations of the notion of ATN grammar, including Cascaded ATNsa sequence of nondeterministic ATN transducers with each successive ATN taking its input from the output of the previous, Generalized Transition Networks a generalization of the notion of ATN to handle arbitrary structured input rather than only linear strings, and an interpretation of KLONE networks as a kind of ATN with inheritance.