Systemic Inheritance
نویسنده
چکیده
In this paper we face the problem of providing a common representation for knowledge learnt from examples and some kind of background knowledge about a given framework. To this end we postulate inheritance hierarchies endowed with some retrieval rules in addition to the inheritance operation. This hierarchies can be algorithmicaly built according to the specifications encoded in our input data. The core idea of the paper is that background knowledge can be seen as a formal grammar definig the allowable combinations in the descriptions of individual instances. The formal mechanism devised for this purpose are system networks: an essential part of Systemic Grammars. These systems are a way of encoding the choices that must be made in the generation (or understanding) of a complex linguistic object and the interdependencies between them. In the paper, we present system networks and a way for implementing them in an hierarchical environment. Additionally, we discuss the features of a retrieval system which outputs range from returning deduced knowledge to supply a set of possible explanations.
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