We describe an approach to logic programming where the execution of a pure logic program is ordered on “temporal” values in the program. The resulting programs are relational and avoid a premature commitment to data structures. This is a strong advantage in a programming language. We present the programming language Starlog as an example of this approach and give a summary of its denotational a...

Many current approaches to statistical language modeling rely on independence a.~sumptions 1)etween the different explanatory variables. This results in models which are computationally simple, but which only model the main effects of the explanatory variables oil the response variable. This paper presents an argmnent in favor of a statistical approach that also models the interactions between ...

This article traces the unstable semantics of use cases from Jacobson to UML 1.3. The UML 1.1 metamodel formally defined the «uses» and «extends» use case relationships as stereotypes of generalisation, yet both received interpretations that varied between inheritance and composition, reflecting a large degree of confusion among developers. The recently revised UML 1.3 has quietly dropped these...

In 1987 the State of Wisconsin, in authorizing a state lottery, required the Wisconsin Lottery Board to contract with IRP to undertake a study of the impact of the lottery on Wisconsin residents of various income levels. Titled "Who Plays the Lottery? A Comparison of Patterns in Wisconsin and the Nation," the study was carried out by Irving Piliavin and Michael Polakowski and is available as IR...