The maintenance of large information systems involves continuous design modifications to designs in response to evolving business conditions or changing user requirements. Because of the complexity barrier associated with engineering such systems, changes can be ad hoc and prone to errors. Based...

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...

MEDIATOR is a negotiation support system (NSS) based onevolutionary systems design (ESD) and database-centered implementation.It supports negotiations by consensus seeking through exchange ofinformation and, where consensus is incomplete, by compromise. Thenegotiation problem is shown...

A number of DSS for supporting decisions by more than one person have beenproposed. These can be categorized by spatial distance (local vs. remote),temporal distance (meeting vs. mailing), commonality of goals (cooperationvs. bargaining), and control (democratic vs. hierarchical)....

Although the goals and means of rule-based and data-based systems aretoo different to be fully integrated at the present time, it seems appropriate toinvestigate a closer integration of language constructs and a better cooperationof execution models for both kinds of approaches.In this paper, we...

Negotiation support is an important aspect of multiperson decision supportsystems. Besides mechanisms for representing and evolving group joint problem representations, suchDSS should also provide an environment in which decision makers are supported in developing,analyzing and reinforcing their...

The maintenance of large information systems involves continuousmodifications in response to evolving business conditions or changing userrequirements. Based on evidence from a case study, we show that thesystems maintenance activity would benefit greatly if the processknowledge reflecting the...

Most large systems development efforts proceed in a top-down fashion where initialspecifications and requirements are incorporated into a high-level design, followed byprograms based on this design. However, a major part of the software life-cycle effort isdevoted to maintenance. While several...

Current planning and control procedures for large-scale software projects are not sufficientlyequipped to deal with changing or imprecise requirements, resource breakdowns,unexpected delays, etc. We propose a solution for managing change inprojects, based on a semantic model of the software...

Are natural language systems for database queries meetingtheir goals? And, are these goals appropriate? The recentlycompleted Advanced Language Project at New York Universitycombined a field experiment with two laboratory studies toexamine these issues by comparing performance between...