Software Engineering and Programming Languages
Advertisement
The Clipper processor: instruction set architecture and implementation
Intergraph's CLIPPER microprocessor is a high performance, three chip module that implements a new instruction set architecture designed for convenient programmability, broad functionality, and easy future expansion.
High level knowledge sources in usable speech recognition systems
The authors detail an integrated system which combines natural language processing with speech understanding in the context of a problem solving dialogue. The MINDS system uses a variety of pragmatic knowledge sources to dynamically generate expectations of what a user is likely to say.
Computerization, productivity, and quality of work-life
The impact of a computerized record system on the work lives of customer service representatives in a large utility company is examined. The results suggest alternate methods for thinking about and measuring technological impact.
An adaptive dependency source model for data compression
By dynamically recoding data on the basis of current intercharacter probabilities, the entropy of encoded messages can be significantly reduced.
Spreadsheet analysis and design
Although spreadsheet programs and microcomputers have revolutionized information processing in organizations, a significant number of serious errors have been reported through the misuse of this technology. This article discusses several different contexts for the development of spreadsheet models and presents structured design techniques for these models.
Can the field of MIS be disciplined?
Preoccupations about the present and future evolution of MIS as a scientific field seem to be gaining popularity among researchers. The authors contend that most models used by the investigators of the MIS field have been based on an inappropriate monistic view of science.
The use of memory in text processing
The performance of a natural language processing system should improve as it reads more and more texts. This is true both for systems intended as cognitive models and for practical text processing systems. Permanent long-term memory should be useful during all stages of text understanding. For example, if, while reading a patent abstract about a new disk drive, a system can retrieve information about similar objects from memory, processing should be simplified. However, most natural language programs do not exhibit such learning behavior. We describe in this article how RESEARCHER, a program that reads, remembers and generalizes from patent abstracts, makes use of its automatically generated memory to assist in low-level text processing, primarily involving disambiguation that could be accomplished no other way. We describe both RESEARCHER's basic understanding methods and the integration of memory access. Included is an extended example of RESEARCHER processing a patent abstract by using information about several other abstracts already in memory.
Experimental investigation of an interior search method within a simplex framework
A feasible direction method for solving Linear Programming (LP) problems, followed by a procedure for purifying a non-basic solution to an improved extreme point solution have been embedded within an otherwise simplex based optimizer. The algorithm is designed to be hybrid in nature and exploits many aspects of sparse matrix and revised simplex technology. The interior search step terminates at a boundary point which is usually non-basic. This is followed by a series of minor pivotal steps which lead to a basic feasible solution with a superior objective function value. It is concluded that the procedures discussed in this article are likely to have three possible applications, which are
(i) improving a non-basic feasible solution to a superior extreme point solution,
(ii) an improved starting point for the revised simplex method, and
(iii) an efficient implementation of the multiple price strategy of the revised simplex method.
A model for predicting and evaluating computer resource consumption
Evaluation and prediction of computer resource consumption can aid in the determination of computer selection and configuration planning as well as in the usefulness and maintenance of existing systems. The model presented can be used in a "What If" mode to make these determinations.
A functional approach to integrating database and expert systems
A new system architecture shares certain characteristics with database systems, expert systems, functional programming languages, and spreadsheet systems, but is very different from any of these.
User interface design from a real time perspective
Using a data flow diagram (DFD) to represent the functional requirements of a system to be developed, an analysis of a real-time perspective is augmented to generate user interface specifications. By applying a set of heuristics, these specifications facilitate the design of three user interface styles: question/answer, menu/form, and command language.
Shape the Future of Computing
ACM encourages its members to take a direct hand in shaping the future of the association. There are more ways than ever to get involved.
Get InvolvedCommunications of the ACM (CACM) is now a fully Open Access publication.
By opening CACM to the world, we hope to increase engagement among the broader computer science community and encourage non-members to discover the rich resources ACM has to offer.
Learn More