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In logic, a logical framework provides a means to define (or present) a logic as a signature in a higher-order type theory in such a way that provability of a formula in the original logic reduces to a type inhabitation problem in the framework type theory. [1] [2] This approach has been used successfully for (interactive) automated theorem ...
The Logical Framework Approach was developed in 1969 for the U.S. Agency for International Development (USAID). It is based on a worldwide study by Leon J. Rosenberg, a principal of Fry Consultants Inc. [1] In 1970 and 1971, USAID implemented the method in 30 country assistance programs under the guidance of Practical Concepts Incorporated, founded by Rosenberg.
Modal predicate logic (a combination of modal logic and predicate logic) is used as the formal method of knowledge representation. The connectives from the language model are logically true (indicated by the "L" modal operator) and connective added at the knowledge elicitation stage are possibility true (indicated by the "M" modal operator ...
The Maude system is an implementation of rewriting logic. It is similar in its general approach to Joseph Goguen's OBJ3 implementation of equational logic, but based on rewriting logic rather than order-sorted equational logic, and with a heavy emphasis on powerful metaprogramming based on reflection.
Other cognitive systems closely associated with language processing and development are 3) the conceptual system, which handles all abstract meanings but is inevitably richly connected with the syntactic system and 4) the auditory system which handles all sound representations based on acoustic input from external environment and is inevitably ...
The logic framework for Escher is Alonzo Church's simple theory of types. Escher, notably, supports I/O through a monadic type representing the 'outside world', in the style of Haskell. One of the goals of Escher's designers was to support meta-programming, and so the language has comprehensive support for generating and transforming programs.
Seen as the simplest form of message production, the fundamental premise of Expressive Design Logic is that “Language is a medium for expressing thoughts and feelings.” [3] [4] This premise is the simplest of the three logics and explains that someone says what they feel. As long as this feeling is conveyed in the message, the message is ...
Formal semantics is the study of grammatical meaning in natural languages using formal concepts from logic, mathematics and theoretical computer science. It is an interdisciplinary field, sometimes regarded as a subfield of both linguistics and philosophy of language.