Seminar on dss


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Seminar on dss

  1. 1. WELCOME
  3. 3. INTRODUCTION The term Decision Support System (DSS) refers to a class of system which support the process of making decisions. It is an interactive computer based system which facilitates solution to semi-structured problems. The main application areas of DSS are Management and planning in business, health care, the Military and any area in which Management will encounter complex decision making.
  4. 4. DEFINITION According to Freyenfeld, “a Decision support System is an interactive data processing and display system which is used to assist in a concurrent decision making process and subject to the following chracteristics:  It is sufficiently user-friendly system  It displays its information in a format and terminology which is familiar to the user  It is selective in its provision of information and avoids information load of user”.
  5. 5. EVOLUTION OF DSS The idea of DSS was firstly coined by G.Antony Gorry & Michael S Scott Morton. They want to introduce framework to channel the computer applications toward management decision making and developed a grid known as ‘Gorry& Scott Morton Grid’. The grid is based on Simon’s concept of programmed non-programmed decisions and Robert N Antony’s Management levels. The decision types are described in terms of problem structure ranging from structured to semi-structured and to un-structured
  6. 6. EVOLUTION Gorry & Scot Morton entered types of business problems into their Grid. The horizontal dotted line through the middle of the Grid is significant. It separates the problem that had been successfully solved with computer assistance from those problems that had not been subjected to computer processing. The upper area was named Structured Decision System and the lower area was named Decision Support System.
  7. 7. OBJECTIVES DSS should achieve mainly three objectives.  Assist managers  Support managers  Improve decision making.
  8. 8. CHARACTERISTICS Ability to support complex problems. DSS is designed for either a particular decision maker or a group of decision makers Consistent and objective decisions Cost savings. It contain mainly a database.
  9. 9. CHRACTERISTICS Contd… Improving managerial efficiency. It is a way to organize information. Facilitates communication. Support semi-structured decision making. Permits managers to test the probable results.
  10. 10. COMPONENTS There are 4 components for DSS.  Database  Decision models  Statistics & manipulation  Display
  11. 11. FUNCTIONS DSS has mainly 5 functions. Model building What-if analysis Goal seeking Risk analysis Graphical analysis.
  12. 12. FUNCTIONS Model building Model building is the process of identifying the most appropriate model for solving the problem. What-if analysis It is the process of assessing the impact of changes to model variables, the values of the variables, or the relationship among the variables. Goal seeking It is the process of determining the input values required to achieve certain goal.
  13. 13. FUNCTIONS Contd… Risk analysis Risk analysis is a function of DSS that allows managers to assess the risk associated with various alternatives. Graphical analysis Graphical analysis helps managers to quickly digest large volume of data and visualize the impact of various course of action.
  14. 14. CLASSIFICATION OF DSS There are seven categories of DSS. a. File drawer system b. Data analysis system c. Analysis information system d. Accounting models e. Representational models f. Optimization models & g. Suggestion models
  15. 15. MODERN CLASSIFICATION OF DSS Model Driven DSS  Data Driven DSS  Communication Driven DSS  Document Driven DSS &  Knowledge Driven DSS. 
  16. 16. DSS USERS S.A Alter identified four distinct usage patterns for DSS.  Subscription Mode  Terminal Mode  Clerk Mode &  Intermediary Mode
  17. 17. METHODS FOR DEVELOPING DSS In order to develop a DSS 3 methods are used. 1. 2. 3. DSS generator DSS shells Custom-made software
  18. 18. METHODS Contd… 1. DSS generator Software that help users to build Decision Support System are termed as DSS generators. 2. DSS shells A DSS shells is a program used to build a customized DSS. 3. Custom-made software It is developed by an organization, which is committed to DSS technology.
  19. 19. GROUP DECISION SUPPORT SYSTEM(GDSS) DSS that support the group decision making are called Group Decision Support System. GDSS are computer based information system that facilitate the exchange of ideas and information among group members.
  20. 20. FACTORS FOR ACHIEVING SUCCESSFUL DSS  Commitment from the top management  Availability of accurate and reliable data  Careful problem selection  A clear link to business objective  Management of organizational resistance.
  21. 21. APPLICATIONS OF DSS Applications of DSS can be classified into three categories. • Independent problems • Dependent /interrelated problems & • Organizational problems.
  22. 22. CONCLUSION Decision Support Systems are a class of subsystem of the Management Information system which support analysts , planners and managers in the decision making process. Now DSS are used all over the world by public, private and government agencies to solve complex and data intensive problems.
  23. 23. THANK YOU