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11. ES/EIS/ESS. Rev: Feb, 2013 Euiho (David) Suh , Ph.D. POSTECH Strategic Management of Information and Technology Laboratory (POSMIT: Dept. of Industrial & Management Engineering POSTECH. Contents. Introduction to Expert System (ES). 1. Expert System.

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Rev: Feb, 2013

Euiho (David) Suh, Ph.D.

POSTECH Strategic Management of Information and Technology Laboratory


Dept. of Industrial & Management EngineeringPOSTECH

introduction to expert system es
Introduction to Expert System (ES)

1. Expert System

  • Definition
    • Computer-based information systems that use expert knowledge to attain high-level decision performance in a narrowly defined problem domain
  • Features of ES
important concepts in es
Important Concepts in ES

1. Expert System

  • Experts
    • Degrees or levels of expertise
    • Nonexperts outnumber experts often by 100 to 1
  • Transferring Expertise
    • From expert to computer to nonexperts via acquisition, representation, inferencing, transfer
  • Inferencing
    • Knowledge = Facts + Procedures (Rules)
    • Reasoning/thinking performed by a computer
  • Rules (IF … THEN …)
  • Explanation Capability (Why? How?)
application of es
Application of ES

1. Expert System

  • ES Application Categories
    • Decision management
    • Diagnostic/Troubleshooting
    • Design/Configuration
    • Selection/Classification
    • Process Monitoring/Control
  • Examples of Application
      • Applied knowledge (i.e., rule-based reasoning)
      • Deduced likely molecular structure of compounds
    • MYCIN
      • A rule-based expert system
      • Used for diagnosing and treating bacterial infections
    • XCON
      • A rule-based expert system
      • Used to determine the optimal information systems configuration
benefits of es
Benefits of ES

1. Expert System

Capture Scarce Expertise

Increased Productivity and Quality

Decreased Decision Making Time

Reduced Downtime via Diagnosis

Easier Equipment Operation

Elimination of Expensive Equipment

Ability to Solve Complex Problems

Knowledge Transfer to Remote Locations

Integration of Several Experts' Opinions

Can Work with Uncertain Information

limitations of es
Limitations of ES

1. Expert System

  • Processing not available knowledge
  • Extracting expertise from humans
  • Fear of sharing expertise
  • Conflicts in dealing with multiple experts
  • Narrow domain of knowledge
  • Highly technical experts’ vocabulary
  • Rare and expensive knowledge engineers
  • Lack of trust by end-users
  • Occasionally producing incorrect recommendations
critical successful factors csf for es
Critical Successful Factors (CSF) for ES

1. Expert System

Sufficiently high level of knowledge

At least one cooperative expert

Mostly qualitative problem

Problem in sufficiently narrow scope

High quality, friendly user interface, naturally string and manipulating the knowledge

introduction to executive information system eis
Introduction to Executive Information System (EIS)

2. Executive Information System

  • Definition
    • A computerized user-friendly system specially designed to meet the needs of top executives and to eliminate the need for intermediaries
  • Capabilities
    • Tracking and control
    • Tailoring to the individual executives decision making style
    • Status access, namely rapid access to current information
    • Extensive use of data from external source
eis development framework
EIS Development Framework

2. Executive Information System

  • Development methodology (CSF)
  • Standard (naming convention)
  • External & Internal Pressure
  • Spread
  • EIS capabilities
  • Development skills
  • Cost/time


Executive Requirement

EIS product

  • Software(EIS generator, DBMS)
  • Hardware
  • Personnel
  • Internal & External Data
  • MIS environment(system config.)
eis development process
EIS Development Process

2. Executive Information System



I. Preliminary Study

Needs for EIS development

II. Application Study

General Info. for EIS

III. Prototype Construction

Design info. For Prototype

IV. System Design


V. Final System Construction

Implementation Plan

VI. Testing


VII. Installation

Improved systems

VIII. Extension

Plan for extension

csf for eis

2. Executive Information System

Committed and Informed Executive sponsor

Operating Sponsor

Appropriate Information service staff

Appropriate Information Technology

Data management

Clear Links to Business Objectives

Management of Organizational Resistance

Management of the Spread and Evolution of the system

expert support system ess
Expert Support System (ESS)

3. Expert Support System

  • Definition
    • A computer program that uses specialized symbolic reasoning to help experts solve difficult problems effectively
  • ES vs. ESS
  • Characteristics of Problems suitable for ESS
    • Unencodable problem solving knowledge
    • Need for a strong user interface
    • Accessibility and malleability

Euiho Suh, “DSS/EIS/DW/OLAP (PPT Slide)”, POSMIT Lab. (POSTECH Strategic Management of Information and Technology Laboratory)

O’Brien & Marakas, “Introduction to Information Systems – Sixteenth Edition”, McGraw – Hill, Chapter 10

Efraim Turban, RameshSharda, DursunDelen, “Decision Support and Business Intelligence systems – Ninth Edition”, Pearson, Chapter 12, pp.530~579

Yunmi Lee, “DSS & ES (PPT Slide)”, POSMIT Lab.(POSTECH Strategic Management of Information and Technology Laboratory)

Ralph M. Stair, George Walter Reynolds, “Fundamentals of Information Systems – Third Edition” – Thomson/Course Technology, Chapter 6

Jaimee Swiercinsky, Matt Kipp, “Expert Systems (PPT Slide)”