what is an expert system?

What is an expert system

An expert system is also called the knowledge based system . It is a computer program that contains the information and logical abilities of one or a group of experts is a specific field . According to the definition given by Doran "an expert system is a computer program which uses non-numerical domain-specific knowledge to solve problems with a competence comparable with that of human experts (Doran , 1988 . If we look at the initial development of such a system it can be traced back to the researchers in artificial

intelligence during the 1960s and 1970s . It came into commercial application during the 1980s . In simple terms it can be said that an expert system is a software system that integrates ideas extracted from experts in a field and uses their data to offer solutions to users of the software (Nickerson , 2000

In other words , it is just like a counsellor who asks an individual a set of question to solve his problem . The difference is that in case of the counsellor , it is a human being that asks questions where as in an expert system it is a computer program that suggests the judgement and behavior of a human or an organization that has expert knowledge and skill in a particular field . Usually , such a system includes a data base consisting of a group of experience and a set of rules for applying the data base to specific situation that is described in advance to the program . Further it is also possible to upgrade the expert systems by enhancing it with additional data base or the set of rules

In general , most of the expert system with a set of rules analyzes information which is generally supplied by the user of the system in a particular sequence . Once the questionnaire is completed the expert system recommends one or more courses of user action . Sometimes the expert system may also offer mathematical analysis of the problem (s . In fact the expert system makes use of what emerges as the reasoning capabilities to reach conclusions

Another related term to this expert system is the term wizard . It is an interactive computer program that aids the user solves a problem Some rule-based expert systems are also termed as wizards and others are a sequence of online forms that direct users from beginning to end a sequence of options , such as the ones which direct the setting up of new software on computers , and these are not expert systems

An expert system mainly focuses on trading information relating to expert and intelligent systems applied in various fields worldwide These systems are used in fields such as economics , book-keeping business , advertising , auditing , regulation , procurement and contracting , project management , risk estimation , information management , information retrieval , crisis management , stock trading intelligent database management systems , network management telecommunications , space education , strategic management , intelligent front ends medicine , chemistry , HR management , production management archaeology , economics , energy , and defense etc

Though this system has been used world wide...