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• expert system
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Expert system
1 In Artificial Intelligence, an expert system is a computer system that emulates the decision-
making ability of a human expert. Expert systems are designed to solve complex
problems by reasoning about knowledge, represented primarily as IF-THEN rules rather than through conventional procedural code. The first expert systems were created in the
1970s and then proliferated in the 1980s. Expert systems were among the first truly
successful forms of AI software.
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Expert system
1 An expert system has a unique architecture, different from traditional computer
programming. It is divided into two parts, one fixed, independent of the expert system: the
inference engine, and one variable: the knowledge base. The knowledge base
represents facts about the world and rules. The inference engine applies the rules to the known facts to deduce new facts. Inference engines can also include explanation and
debugging capabilities.
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Expert system - History
1 Hayes-Roth expressed the key insight of early expert systems to be that
intelligent systems derive their power from the knowledge they
possess rather than from the specific formalisms and inference schemes
they use
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Expert system - History
1 Expert systems were introduced by the Stanford Heuristic Programming Project
led by Edward Feigenbaum who is sometimes referred to as the "father of
expert systems". The Stanford researchers tried to identify domains
where expertise was highly valued and complex such as diagnosing infectious
diseases (Mycin) and identifying unknown organic molecules (Dendral)
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Expert system - History
1 In addition to Feigenbaum key early contributors were Bruce Buchanan,
Edward Shortliffe, Randall Davis, William vanMelle, and Carli Scott.
Expert systems were among the first truly successful forms of AI software.
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Expert system - History
1 The advantage of expert system shells was that they were somewhat easier for non-
programmers to use
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Expert system - History
1 In the 1980s, expert systems proliferated. Universities offered
expert system courses and two thirds of the Fortune 1000 companies applied the technology in daily business activities. Interest was
international with the Fifth Generation Computer Systems project in Japan and increased
research funding in Europe.https://store.theartofservice.com/the-expert-system-toolkit.html
Expert system - History
1 Up until that point the primary development environment for expert
systems had been high end Lisp machines from Symbolics and Texas
Instruments
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert system - History
1 Many of the leading major business application suite vendors such as SAP, Siebel, and Oracle integrated
expert system capabilities into their suite of products as a way of
specifying business logic
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert system - Software architecture
1 An expert system is an example of a knowledge-based system. Expert
systems were the first commercial systems to use a knowledge-based architecture. A knowledge-based
system is essentially composed of two sub-systems: the knowledge base and the inference engine.
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Expert system - Software architecture
1 In later expert systems developed with commercial shells the
knowledge base took on more structure and utilized concepts from
object-oriented programming
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Expert system - Software architecture
1 One of the early innovations of expert systems shells was to
integrate inference engines with a user interface
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Expert system - Software architecture
1 As Expert Systems evolved many new techniques were incorporated
into various types of inference engines. Some of the most important
of these were:
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Expert system - Software architecture
1 Although they were not highly used in expert systems classifiers are very
powerful for unstructured volatile domains and are a key technology for the Internet and the emerging
Semantic Web.
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Expert system - Advantages
1 With an expert system the goal was to specify the rules in a format that was intuitive and easily understood,
reviewed, and even edited by domain experts rather than IT experts
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Expert system - Advantages
1 With an expert system shell it was possible to enter a few rules and
have a prototype developed in days rather than the months or year
typically associated with complex IT projects.
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Expert system - Advantages
1 In addition as expert systems moved from prototypes in the lab to
deployment in the business world issues of integration and
maintenance became far more critical
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Expert system - Disadvantages
1 These problems with expert systems were essentially the same problems
as any other large system: integration, access to large
databases, and performance.
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Expert system - Disadvantages
1 As a result a great deal of effort in the later stages of expert system tool
development were focused on integration with legacy environments
such as COBOL, integration with large database systems, and porting
to more standard platforms
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Expert system - Applications
1 Also, while these categories provide an intuitive framework for describing
the space of expert systems applications, they are not rigid
categories and in some cases an application may show characteristics
of more than one category.
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Expert system - Applications
1 For the most part this category or expert systems was not all that successful
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Expert system - Applications
1 Dendral was a tool to study hypothesis formation in the identification of organic molecules. The general problem it solved
—designing a solution given a set of constraints—was one of the most
successful areas for early expert systems applied to business domains such as
sales people configuring Dec Vax computers and mortgage loan
application development.
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Expert system - Applications
1 SMH.PAL is an expert system for the assessment of students with multiple
disabilities.
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Expert systems
1 In Artificial Intelligence, an 'expert system' is a computer system that emulates the
decision-making ability of a human expert. Expert systems are designed to solve complex
problems by reasoning about knowledge, represented primarily as IF-THEN rules rather
than through conventional procedural code. The first expert systems were created in the 1970s
and then proliferated in the 1980s. Expert systems were among the first truly successful
forms of Artificial Intelligence|AI software.
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems
1 Inference engines can also include explanation and debugging
capabilities., School of Science Education, Expert system: a catalyst
in educational development in Nigeria: Knowledge-based systems
collect the small fragments of human know-how into a knowledge-base which is used to reason through a
problem, using the knowledge that is appropriated
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems - History
1 Expert systems were introduced by the Stanford Heuristic Programming Project led by Edward Feigenbaum
who is sometimes referred to as the father of expert systems. The
Stanford researchers tried to identify domains where expertise was highly
valued and complex such as diagnosing infectious diseases Mycin|
(Mycin) and identifying unknown organic molecules Dendral|(Dendral)
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems - History
1 Stubblefield, Benjamin/Cummings Publishers, Rule Based Expert
System Shell: example of code using the Prolog rule based expert system shell, Université de Liège, Belgique:
PROLOG, the first declarative language
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Expert systems - History
1 In the 1980s, expert systems proliferated. Universities offered
expert system courses and two thirds of the Fortune 1000 companies applied the technology in daily
business activities.Durkin, J. Expert Systems: Catalog of Applications.
Intelligent Computer Systems, Inc., Akron, OH, 1993. Interest was
international with the Fifth Generation Computer Systems project in Japan and increased
research funding in Europe.
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems - History
1 Up until that point the primary development environment for expert
systems had been high end Lisp machines from Xerox, Symbolics Inc.|
Symbolics and Texas Instruments
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems - History
1 Many of the leading major business application suite vendors such as
SAP (software)|SAP, Siebel Systems|Siebel, and Oracle Corporation|Oracle integrated expert system
capabilities into their suite of products as a way of specifying
business logic
https://store.theartofservice.com/the-expert-system-toolkit.html
AI Winter - The fall of expert systems
1 Expert systems proved useful, but only in a few
special contexts
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AI Winter - The fall of expert systems
1 The few remaining expert system|expert system shell companies were eventually forced to downsize and
search for new markets and software paradigms, like case based reasoning
or universal database access
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History of AI - The neats: logic, Prolog and expert systems
1 Prolog uses a subset of logic (Horn clauses, closely related to rules and production system|production rules) that permit tractable computation.
Rules would continue to be influential, providing a foundation for
Edward Feigenbaum's expert systems and the continuing work by Allen Newell and Herbert A. Simon that would lead to Soar (cognitive
architecture)|Soar and their Unified Theory of Cognition|unified theories
of cognition.
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History of AI - The rise of expert systems
1 An expert system is a program that answers questions or solves
problems about a specific domain of knowledge, using logical production system|rules that are derived from
the knowledge of experts. The earliest examples were developed by
Edward Feigenbaum and his students. Dendral, begun in 1965,
identified compounds from spectrometer readings. MYCIN, developed in 1972, diagnosed infectious blood diseases. They
demonstrated the feasibility of the approach. (Dendral), ,
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History of AI - The rise of expert systems
1 Expert systems restricted themselves to a small domain of specific knowledge (thus avoiding the
commonsense knowledge problem) and their simple design made it
relatively easy for programs to be built and then modified once they
were in place. All in all, the programs proved to be useful: something that
AI had not been able to achieve up to this point. and
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History of AI - The rise of expert systems
1 Corporations around the world began to develop and deploy expert
systems and by 1985 they were spending over a billion dollars on AI, most of it to in-house AI departments
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Software agent - Distinguishing agents from expert systems
1 * Expert systems are not coupled to their environment;
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R1 (expert system)
1 The 'R1' (later called 'XCON', for e'X'pert 'CON'figurer) program was a production-rule-based system written
in OPS5 by John P. McDermott of Carnegie Mellon University|CMU in 1978 to assist in the ordering of
Digital Equipment Corporation|DEC's VAX computer systems by
automatically selecting the computer system components based on the
customer's requirements. The development of XCON followed two
previous unsuccessful efforts to write an expert system for this task, in
FORTRAN and BASIC).
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R1 (expert system)
1 XCON's success led DEC to Rewrite (programming)|rewrite XCON as 'XSEL'- a
version of XCON intended for use by DEC's salesforce to aid a customer in properly
configuring their VAX (so they wouldn't, say, choose a computer too large to fit through their doorway or choose too few cabinets
for the components to fit in). Location problems and configuration were handled
by yet another expert system, 'XSITE'.
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Expert systems
1 Expert systems are designed to solve complex problems by automated
reasoning|reasoning about knowledge, represented primarily as
Rule-based system|if–then rules rather than through conventional procedural code. The first expert
systems were created in the 1970s and then proliferated in the 1980s.
Expert systems were among the first truly successful forms of Artificial
Intelligence|AI software.
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems
1 Inference engines can also include explanation and debugging capabilities.
[http://www.hrmars.com/admin/pics/261.pdf Nwigbo Stella and Agbo Okechuku Chuks],
School of Science Education, Expert system: a catalyst in educational development in
Nigeria: Knowledge-based systems collect the small fragments of human know-how into a knowledge-base which is used to
reason through a problem, using the knowledge that is appropriated
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems - History
1 Edward Feigenbaum in a 1977 paper said that the key insight of early
expert systems was that intelligent systems derive their power from the knowledge they possess rather than
from the specific formalisms and inference schemes they use (as
paraphrased by Hayes-Roth, et al.) Although, in retrospect, this seems a rather straightforward insight, it was a significant step forward at the time
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems - History
1 Expert systems were introduced by the Stanford Heuristic Programming Project led by Feigenbaum, who is
sometimes referred to as the father of expert systems. The Stanford
researchers tried to identify domains where expertise was highly valued and complex, such as diagnosing infectious diseases (Mycin) and
identifying unknown organic molecules (Dendral).
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems - History
1 In addition to Feigenbaum key early contributors were Edward Shortliffe, Bruce Buchanan, and Randall Davis. Expert systems were among the first
truly successful forms of Artificial Intelligence|AI software.
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems - History
1 Stubblefield, Benjamin/Cummings Publishers, Rule Based Expert
System Shell: example of code using the Prolog rule based expert system
shell[http://promethee.philo.ulg.ac.be/engdep1/download/prolog/htm_docs/
prolog.htm A
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems - History
1 Many of the leading major business application suite vendors such as
SAP (software)|SAP, Siebel Systems|Siebel, and Oracle Corporation|Oracle integrated expert system
capabilities into their suite of products as a way of specifying
business logic
https://store.theartofservice.com/the-expert-system-toolkit.html
Expert systems for mortgages
1 They also see in the application of expert systems a possibility for
standardized, efficient handling of mortgage loans, and appreciate that
for the acceptance of mortgages there are hard and fast rules which do not always exist with other types
of loans.
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Expert systems for mortgages
1 The expert system corrects this
failure”.
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Expert systems for mortgages
1 The expert system also capitalizes on regulatory possibilities. In France, the government subsidizes one type of loan which is available only on low-
cost properties (the HLM) and to lower income families. Known as
frets Conventionnes, these carry a rate of interest lower than the rate
on the ordinary property loan from a bank. The difficulty is that granting
them is subject to numerous regulations, concerning both:
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Expert systems for mortgages
1 Expert system for mortgages takes care of these by providing branch employees with tools permitting them to process an application
correctly, even if a bank employee does not have an exact knowledge of
the screening procedure.
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Expert systems for mortgages - Goals and Objectives
1 The expert system neither refuses nor grants loans, but it:
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Expert systems for mortgages - Goals and Objectives
1 * means and the security to be obtained from him.Expert systems in
banking: a guide for senior managers./Dimitris N.Chorafas and
Heinrich Steinmann. p. 222-225.
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Expert systems for mortgages - Goals and Objectives
1 The expert system provides the branch with a significant amount of
assistance simply by producing correct applications for a loan. In
many cases the client had to choose between different types of loans, and
it was planned that expert system should enable bank employees to advise clients on the type of loan which best matched their needs.
This, too, has been done and as such contributes to the bank employees'
training.
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Expert systems for mortgages - Goals and Objectives
1 The main tasks of expert system for
mortgages focused on:
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Expert systems for mortgages - Goals and Objectives
1 Simple expert systems constitute the first phase of a loan application for
mortgage purposes. After a prototype is made, the construct
should be presented to expert loan officers who, working together with
the knowledge engineer(s) will refine the first model. But if there is no first
try which is simple and understandable, there will not be
complex real-life solutions afterwards.
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Expert systems for mortgages - Goals and Objectives
1 Whether simple or sophisticated, an expert system for mortgages should
be provided with explanation facilities that show how it reaches its decisions and hence its advice. The confidence of the loan officer in the AI construct will be increased when this is done in a convincing manner.
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Expert systems for mortgages - Application of expert systems for mortgages
1 Through the Mavent Compliance Console (MC2), the front-end
interface to the Mavent Expert System, Fannie Mae review loans for compliance with its policies on the Truth in Lending Act (TILA), federal
and state high-cost lending laws, and the points-and-fees test as outlined
in the Fannie Mae Selling and Servicing Guide.
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Expert systems for mortgages - Application of expert systems for mortgages
1 Expert systems for mortgages can be used not only in mortgage banking,
but also in law. There are some expert system that was developed to assist attorneys and paralegals in the closing process for commercial real
estate mortgage loans.
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Expert systems for mortgages - Application of expert systems for mortgages
1 An Expert System for Legal
Consultation
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