Uni cation or two way pattern matching is the process of solving an equation involving two rst order terms with variables Uni cation is used in type inference in many pro gramming languages and in the execution of logic programs This means that uni cation algorithms have to be written over and over again for di erent term types Many other functions also make sense for a large class of datatypes...

This paper d e s c r i b e s a sys t em t h a t a t t e m p t s to i n t e r p r e t d e s c r i p t i v e t e x t s w i t h o u t the uJe of complex grammars. The pu rpose of the sys t em i s to t r a n s f o r m the d e s c r i p t i o n s to a s t a n d a r d form which may be used as the b a s i s of a d a t a b a s e s y s tem knowledgeable i n the s u b j e c t m a t t e r of the teXt. Th...

syntax rewriting (macros): The idea is as old as programming languages. Macros were fraught with name-capture peril until the advent of hygienic macro-expansion [30]. Our domain-speci c language over residual abstract syntax follows the lead of Chez Scheme's syntactic extensions [24], namely, it uses pattern matching, fenders (i.e., guards), and with-expressions. Let insertion: Mogensen suggest...

machines for CP languages have recently become available, and initial performance results are encouraging [40]. 4 Promising Directions Constraint programming has by now shown that constraints can be used not only to represent knowledge but also as a way to guide search, prune useless branches, lter queries, and describe process communication and synchronization. With this is mind, we may identi...

Interpretation Abstract Interpretation examples partial evaluation and assert Show low overhead of tabling in meta interpreter due to how tables are implemented as triesInterpretation examples partial evaluation and assert Show low overhead of tabling in meta interpreter due to how tables are implemented as tries CHAPTER META PROGRAMMING AI of a Simple Nested Procedural Language see warren xsb ...

A new Prolog/Lisp type programming language called Qute is introduced. Qute computes (partial) recursive functions on the domain S of symbolic expressions in the sense of Sato[3], Sato and Hagiya[4]. Qute amalgamates Prolog and Lisp in a natural way. Any expression that is meaningful to Qute is either a Prolog expression or a Lisp expression and a Prolog (Lisp) expression is handled by the Prol...

Based on experiences from livestock breeding we introduce erroneous truncation selection for the Breeder Genetic Algorithm BGA The decision behavior of the breeder is given by a simple model It is shown that there is no bene t to the BGA by using erroneous selection though the variance of the parent population is increased by increasing the decision error variance Introduction Selection is one ...

On large problems reinforcement learning systems must use parame terized function approximators such as neural networks in order to gen eralize between similar situations and actions In these cases there are no strong theoretical results on the accuracy of convergence and com putational results have been mixed In particular Boyan and Moore reported at last year s meeting a series of negative re...

We investigate the possibility of solving mathematical programs with complemen tarity constraints MPCCs using algorithms and procedures of smooth nonlinear programming Although MPCCs do not satisfy a constraint quali cation we establish su cient conditions for their Lagrange multiplier set to be nonempty MPCCs that have nonempty Lagrange multiplier sets and that satisfy the quadratic growth con...

A computer-based i n s t r u c t i o n a l env i ronment f o r s t u d e n t s l e a r n i n g LISP i s d e s c r i b e d . I t s des ign i n c l u d e s a LISP I n t e r p r e t e r w i t h an extended e r r o r h a n d l i n g c a p a b i l i t y f o r e v a l u a t i n g f u n c t i o n s w r i t t e n by s t u d e n t s . S tudents can ask q u e s t i o n s in n a t u r a l language about L...