Transcript Document
Week 2 Management Support Systems (MSS) Management and Decision Making Decision support framework Decision support technologies 1 DECISION MAKING AND COMPUTERIZED SUPPORT Management Support Systems (MSS) Objectives Support managerial work. Support decision making. 2 Managerial decision making and information systems Management is a process by which organizational goals are achieved through the use of resources. Resources: Inputs Goal Attainment: Output Measuring Success: Productivity = Outputs / Inputs 3 Managerial decision making and information systems There are 4 major functions of manager in management theory i.e. planning, organizing, directing and controlling. Managerial decision is getting more complex for some reasons: • larger alternative space for decision options due to improved modern technology and communication systems. • cost of making errors can be very large because of the complexity and magnitude of operations, automation and chain reaction or even legal issues. • continuous in fluctuating environment and more uncertainty in several impacting elements. 4 System Effectiveness and Efficiency Two Major Classes of Performance Measurement Effectiveness is the degree to which goals are achieved Doing the right thing! Efficiency is a measure of the use of inputs (or resources) to achieve outputs Doing the thing right! MSS emphasize effectiveness. 5 Computer Applications Evolving from TPS and MIS Proactive Applications (DSS) New modern management tools in Data access Online analytical processing (OLAP) Internet / Intranet / Web for decision support 6 Need for Computerized Decision Support and the Supporting Technologies • • Speedy computations. A computer allows the decision maker to perfom large numbers of computations very quickly and at low cost. Timely decicions are critical for many situations, ranging from a physician’s decision in an emergency room to that of a stock trader. Increrased productivity. Assembling a group of decision makers, especially experts, may be costly. Computerized support can reduce the size of the group and enable the group members to be at different locations (sasving travel cost). Also, the productivity of staff support (such as financial and legal analysts) may be incresed. 7 Need for Computerized Decision Support and the Supporting Technologies • Technical support. Many decisions involve complex computations. Data can be store in different database and at Web sites possibly outside the organization. The data may include sound and graphics, and there may be need transmit them quickly from distant locations. Computers can search, store, and transmit needed data quickly and economically. • Overcoming cognitive limits in processing and stroge. According to Simon (1997), the human mind is limited in its ability to process and information. Also, people may have difficulty in recalling information in an errorfree fashion when it is needed. 8 Decision-making Process 9 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 10 Decision Making Along a Continuum (Simon) Highly Unstructured Highly Structured (Nonprogrammed) (Programmed) Decisions Decisions Semistructured Decisions 11 Decision Making Problem (Simon) Unstructured problem has no structured phases Semistructured problem has some (or some parts with) structured phases problems often solved with human intuition solve with standard solution procedures and human judgment Structured problem has all structured phases procedures for obtaining the best solution are known objectives are clearly defined management support systems can be useful 12 Decision Support Technologies Management Support Systems (MSS) Decision Support Systems (DSS) Group Support Systems (GSS) Enterprise (Executive) Information Systems (EIS) Enterprise Resource Planning (ERP) and SupplyChain Management (SCM) Knowledge Management Systems Expert Systems (ES) Artificial Neural Networks (ANN) Hybrid Support Systems Intelligent DSS 13 Decision Support Framework Type of Decision Structured Semistructured Unstructured Type of Control Operational Managerial Strategic Control Control Control Accounts receivable, order entry Production scheduling, inventory control Selecting cover for magazines, buying software, approve loans Budget analysis, short-term forecasting, personnel reports, make or buy Credit evaluation, budget preparation, plant layout, project scheduling, reward system design Financial management (investment), warehouse location, distribution systems Building new plants, acquisition, new product planning, compensation planning, quality assurance planning Negotiating, recruiting R&D planning, new an executive, buying technology development, hardware social responsibility planning 14 Types of decision – The technology support Type of Control Type of Decision Operational Managerial Strategic Control Control Control Structured Technology support needed MIS, TPS DSS, KMS Semistructured IDSS, ES, ANN, FL, CBR Unstructured Technology support needed MIS, Management Science Management Science, DSS, ES, EIS EIS, ES, ANN, KMS 15 Typical Business Decision Aspects Decision may be made by a group Group member biases Several, possibly contradictory objectives Many alternatives Results can occur in the future Attitudes towards risk Gathering information takes time and expense Too much information “What-if” scenarios Trial-and-error experimentation with the real system may result in a loss Changes in the environment can occur continuously 16