Introduction Expert system can be defined as a tool for information generation from knowledge. Information is either found in various forms or generated from data and/or knowledge. Text, images, video, audio are forms of media on which information can be found, and the role of information technology is to invent, and devise tools to store and retrieve this information. Statistical information i...

Equifax Check Services provides retail merchants and other businesses with quality decisions concerning the acceptability. risk. or fraudulence of customer checks. The greatest percentage of these decisions are provided automatically through on-line links with point-of-sale termmalls. When a transaction is suspect, a referraY notice is generated directing the merchant to call one of Equifax Che...

No matter which area of business one is engaged in, expert systems can be used to fulfill the need for higher productivity and reliability of decisions. Expert systems are most valuable to organizations that have a high-level of knowhow experience and expertise that cannot be easily transferred to other members. They are designed to carry the intelligence and information found in the intellect ...

This article deals with hybrid expert system that has knowledge base realized through a hierarchical structure of artificial neural networks (NN). The decision tree is built by C4.5 algorithm at first. In the next step the nods of the tree are replaced by NN. They are trained to split the data in the same way as the nods. So the problem is separated into partial sub-problems that are solved by ...

In mechanical design, there is often unavoidable uncertainty in estimates of design performance. Evaluation of design alternatives requires consideration of the impact of this uncertainty. Expert heuristics embody assumptions regarding the designer's attitude towards risk and uncertainty that might be reasonable in most cases but inaccurate in others. We present a technique to allow designers t...

The SHYSTER project is concerned with the development of a hybrid legal expert system. The case-based part of SHYSTER chooses the cases upon which to base its opinion by measuring the similarity between previously-decided cases and the case in question. Statisticians make use of many di erent similarity measures, however|for SHYSTER|each of the commonly used similarity measures reduces to one o...

Software is an important resource. It contains and controls data and other resources. Thus measures must be taken to protect that data and resources. Thus Software Metrics are measurement of some properties of a piece of software or its specifications. Metrics are very important in Software Quality Measurement. Since Tom De Marco rightly stated “You can’t control what you can’t measure.” Softwa...

Knowledge maintenance (KM) is the process of reflecting over some current knowledge based system in order to handle a new situation. Changes that fix new problems must not introduce bugs into old fixes. A common technique for KM is to reflect over dependencies between concepts. In this review, we sample the KM work on modeling dependencies using either a logic-based, a network-based, or a proce...