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Material Type: Notes; Professor: Tollison; Class: Intro to Information Systems; Subject: Business; University: Mississippi University for Women; Term: Fall 2007;
Typology: Study notes
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Decision Support Systems September 28 – October 4 Businesses use information technology tools to analyze information very quickly to help you create a competitive advantage. These tools fall into two categories: decision making systems and artificial intelligence (p. 180). The book makes an interesting quote that I want you to notice. “The big winners in tomorrow’s business race will be those organization’s that are ‘big of brain and small of mass’ (p. 180).
occurring or that an opportunity exists. Such signs might include customers asking for a new feature in a product, raising costs, declining sales, etc (p. 181).
advantage of an opportunity (p. 181).
monitor the results, and make adjustments as necessary (p. 181).
as necessary (p. 181). Types of Decisions:
way. No feel or intuition is necessary (p. 182).
generally several “right” answers (p. 182). o Most decision are a mix of structured and nonstructured (p. 182).
time (p. 182).
using a different set of criteria each time (p. 182). Decision Support Systems:
designed to support decision making when the problem is not structured (p. 184).
o DSS is not designed to make a decision for you, but instead to provide a tool to improve your effectiveness as a decision maker. You still must bring your own judgment to the decision making process (p. 185).
maintaining the information that you want your database to use (p. 186). It consists of organizational, external, and personal information.
A model is used to represent an event, fact, or situation. Examples include statistical analysis (such as analysis of variance or linear regression) or what-if analysis. One of your jobs as a decision maker will be choose the appropriate model.
DSS (p. 186). The user interface is the part of the system you see. Through the user interface, you enter information, commands, and models. Geographic Information System (GIS):
information (p. 187). Spatial information is any information that can be shown in map form, such as roads, the distribution of the bald eagle population, sewer systems, or the path of a hurricane (p. 187). o Information to supply your GIS may come from numerous places: U.S. Census Bureau, U.S. Bureau of Labor Statistics, even some private businesses will sell you this information (pp. 188-189).