1. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)1 CHAPTER 1 Introduction to Decision Support System

2. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)2 1.1 Decision Making and Business Decision Making What is Decision Making ? Business Decision Making  Individual or Group  Have Conflict objective  Many Alternative  Predictive  Have risk  Use What-If analysis to forecast  Some case will use Trail-and-Error  The environments have effect

3. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)3 1.2 Type of Problem Structured Problem Semistructured Problem Unstructured Problem

4. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)4 1.3 Three Phase Decision-making Process (Simon) Intelligence  searching for conditions that call for decisions Design  inventing, developing, and analyzing possible courses of action Choice  selecting a course of action from those available Decision Support Systems and Intelligent Systems, Efraim Turban and Jay E. Aronson, 6th edition. Copyright 2001, Prentice Hall, Upper Saddle River, NJ

5. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)5 The Decision-Making Process Intelligence Design Choice Implementation (Figure 2.2) Modeling is Essential to the Process Decision Support Systems and Intelligent Systems, Efraim Turban and Jay E. Aronson, 6th edition, Copyright 2001, Prentice Hall, Upper Saddle River, NJ Systematic Decision-Making Process (Simon, 1977)

6. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)6 3 Main type of Decision Making  Number of Decision Maker  Structure of Problem  Organization Level 1.4 Type of Decision Making

7. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)7 1.4 Type of Decision Making Number of Decision Maker  Personal Decision  Group Decision

8. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)8 1.4 Type of Decision Making Structure of Problem  Structured Decision  Semistrucured Decision  Unstructured Decision

9. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)9 1.4 Type of Decision Making Organization Level  Strategic Decision  Management Control Decision  Operational Decision

10. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)10  Decision Under Certainty Condition  Decision Under risk Condition  Decision Under Uncertainty Condition 1.5 Condition of Decision Making

11. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)11 1.6 Information System for Decision Making Top Management Level Middle Management Level Operational Level TPS OAS MIS DSS EIS

12. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)12 1.6 Information System for Decision Making Reason for use IS  Many Alternative  Limitation time  Have uncertainty environment  Lack of expert  Time to processing

13. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)13 1.7 Meaning and Evolution of DSS Meaning of DSS  Mr.Scott Morton (1971) ระบบที่ทำงาน ร่วมกับคอมพิวเตอร์โดยช่วยผู้ตัดสินใจเอา ข้อมูล (Data) และแบบจำลอง (Model) มา แก้ปัญหาแบบไม่มีโครงสร้าง (Unstructured Problem)  Mr.Keen and Mr.Scott Morton (1978) Semistructure Problem

14. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)14 1.7 Meaning and Evolution of DSS Evolution of DSS  First phase evolution  Second phase evolution  Third phase evolution  Fourth phase evolution  Fifth phase evolution

15. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)15 1.8 Characters and Capability of DSS 13 Characters and Capability of DSS  Semistructured or Unstructured problems  Support Middle and Top Manager  Individual or group decision  Discrete or Continuous Problem  Support Decision Making Process  Support verities of Decision

16. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)16 1.8 Characters and Capability of DSS 13 Characters and Capability of DSS  High Flexibility  User friendly  Performance of DSS importance than cost for develop  To support Decision process not make decision

17. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)17 1.8 Characters and Capability of DSS 13 Characters and Capability of DSS  Easy to develop by user (for small DSS)  Have Model component  Can access many input data

18. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)18 1.9 Benefit of DSS  Develop efficiency of personal work  Develop problem solving  Help to commutations  Groupware  Emphasis to learning and practice  More organization control  Inventory control

19. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)19 1.10 Types of DSS 4 Main type of DSS  DSS by output  DSS by “ Holsapple and Whinston ” Idea  DSS by User  DSS by type of work

20. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)20 1.10 Types of DSS DSS by output  File Drawer System  Data Analysis System  Analysis Information System  Accounting Model  Representational Model  Optimization System  Suggestion System

21. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)21 1.10 Types of DSS DSS by “ Holsapple and Whinston ” Idea  Text-Oriented DSS  Database-Oriented DSS  Spreadsheet-Oriented DSS  Solver-Oriented DSS  Rule-Oriented DSS  Compound DSS

22. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)22 1.10 Types of DSS DSS by User  Personal Support  Group Support  Organization Support

23. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)23 1.10 Types of DSS DSS by type of work  Custom-Made System  Ready-Made System

24. Decision Support System by Simulation Model (Ajarn Chat Chuchuen)24 Question ????