A cost-effectiveness method for evaluating measures againsthospital-aquired infections is based on a network interdictionmodel. Algorithms for optimal interdiction of the infectionnetwork are presented and their applicability is discussed.Implications of the approach for classifying...

Efficient ways to process unanticipated queriesare a crucial prerequisite for the success ofgeneralized database management systems. A widevariety of approaches for improving the performanceof query evaluation algorithms have been proposed:logic-based and semantic transformations,...

As part of the operation of an Expert System, adeductive component accesses a database of facts to helpsimulate the behavior of a human expert in a particularproblem domain. The nature of this access is examined, andfour access strategies are identified. Features of each ofthese strategies are...

The simultaneous optimization of multiple queries submitted to adatabase system may lead to substantial savings over the current approach ofoptimizing each query separately. Isolating common subexpressions in multiplequeries and treating their execution as a sharable resource are...

There is growing consensus that some of the most crucial questionsconcerning the feasibility and desirability of natural language interfaces todatabases can only be resolved by empirical research. This paper reports theresults of several empirical studies which investigated the...

Many decisions in organizations are made, or at least prepared, by multiple cooperatingdecision makers. A distributed DSS architecture is presented that connects multipleindividual DSS to a group DSS. The group decision making process is supported by content-orientedmethods based on extensions...

A methodology is presented for selecting query languages suitable forcertain user types. The method is based on a trend model of querylanguage development on the dimensions of functional capabilities andusability. Expected developments are exemplified by the descriptionof quot;second...

The formulation of complex planning models, such as linearprogramming (LP) systems, is a difficult task that enjoys little supportby current decision support systems tools. It is hypothesized thatcurrent artificial intelligence technology is insufficient to buildgeneralized formulation tools...