Presentation on theme: "STUDENT LEARNING OUTCOMES"— Presentation transcript:
1 Chapter 4 DECISION SUPPORT AND ARTIFICIAL INTELLIGENCE Brainpower for Your Business
2 STUDENT LEARNING OUTCOMES Compare and contrast decision support systems and geographic information systems.Define expert systems and describe the types of problem to which they are applicable.Define neural networks and fuzzy logic and the use of these AI tools.
3 STUDENT LEARNING OUTCOMES Define genetic algorithms and list the concepts on which they are based and the types of problems they solve.Describe the four types of agent-based technologies.
4 VISUALIZING INFORMATION IN MAP FORM FOR DECISION MAKING Geographic information systems (GISs) allows you to see information spatially, or in map form.Researchers and scientists used a GIS to map the location of all the debris from the shuttle ColumbiaThe city of Chattanooga uses a GIS to map the location of its 6,000 trees to help develop a maintenance schedule
5 VISUALIZING INFORMATION IN MAP FORM FOR DECISION MAKING The city of Richmond, VA, used a GIS to optimize its 2,500 bus stop locations in its public transportation systemSometimes, a picture is worth a thousand wordsRecall from Chapter 1, the form of information often defines its quality
6 VISUALIZING INFORMATION IN MAP FORM FOR DECISION MAKING Do you use Web-based map services to get directions and find the location of buildings? If so, why?In what ways could real estate agents take advantage of the features of a GIS?How could GIS software benefit a bank wanting to determine the optimal placements for ATMs?
7 INTRODUCTION Phases of decision making Intelligence (find what to fix) find or recognize a problem, need, or opportunity (the diagnostic phase).Detect and interpret signs that indicate a situation which needs your attention.Design (find fixes)consider possible ways of solving the problem.Develop all the possible solutions
8 INTRODUCTION Phases of decision making (Cont.) Choice (pick a fix) weigh the merits of each solution and choose the best one.At this stage a course of action is prescribed.Implementation (apply the fix)carry out the chosen solution, monitor the results and make adjustments as necessary.Your solution will always need fine-tuning.
10 Types of Decisions You Face Structured decisionProcessing a certain information in a specified way so that you will always get the right answerE.g. calculating gross pay for hourly workers.Can be easily automated with IT.Nonstructured decisionOne for which there may be several “right” answers, without a sure way to get the right answerE.g. introduce a new product line, employ a marketting campaign.What about choosing a job?
11 Types of Decisions You Face Recurring decisionHappens repeatedly (weekly, monthly, quarterly, or yearly)E.g. deciding how much inventory to carry, at what price to sell the inventory.Nonrecurring (ad hoc) decisionOne you make infrequently (might be once)E.g. deciding where to build a distribution center, company mergers.
15 DECISION SUPPORT SYSTEMS Decision support system (DSS) – a highly flexible and interactive system that is designed to support decision making when the problem is not structuredDecision support systems help you analyze, but you must know how to solve the problem, and how to use the results of the analysis.
16 Alliance between You and a DSS The union of your know-how and IT power helps you generate business intelligence so that you can quickly respond to changes and manage resources in the most effective and efficient ways possible.
17 Components of a DSS A typical DSS has three components: Model management componentData management componentUser interface management componentWhen you begin your analysis, you tell the DSS, using the user interface management component, which model (in the model management component) to use on what information (in the data management component). The model requests the information from the data management component, analyzes it and sends the result to the user interface management component which passes the results back to you.
18 Components of a DSS (Cont.) Model management componentConsists of both the DSS models and the model management systemA model is a representation of some event, fact, or situation.Businesses use models to represent variables and their relationships.E.g. you would use a statistical model called analysis of variance to determine whether newspaper and television are equally effective in increasing sales.The model management component can’t select the best model for you to use for some problem but it can help you create and manipulate models quickly and easily.
19 Components of a DSS (Cont.) 2- Data management componentStores and maintains the information that you want your DSS to useConsists of both the DSS information and the DSS DBMS.This information can come from one or more of three resources:Organizational informationExternal information, e.g. federal government, Dow Jones and the Internet.Personal information- your own insights and experience.
20 Components of a DSS (Cont.) 3- User interface management componentAllows you to communicate with the DSSConsists of the user interface and the user interface management system.Allows you to combine your know-how with the storage and processing capabilities of the computer.This the part that you see, through it you enter information, commands and models.
22 GEOGRAPHIC INFORMATION SYSTEMS Geographic information system (GIS) – DSS designed specifically to analyze spatial information.Spatial information is any information in map form such as roads, the path of a hurricane, etc.Businesses use GIS software to analyze information, generate business intelligence, and make decisions.
24 EXPERT SYSTEMSExpert (knowledge-based) system – an artificial intelligence system that applies reasoning capabilities to reach a conclusionUsed forDiagnostic problems (what’s wrong?) correspond to the intelligence phase of decision making.Prescriptive problems (what to do?) correspond to the choice phase of decision making.
25 EXPERT SYSTEMS (Cont.)What’s the difference between a DSS and an expert system?To use a DSS, you must have considerable knowledge or expertise with the situationA DSS assists you in making decisions.You must know how to reason things.In an expert system the know how is in the system.You need only to provide the facts and symptoms of the problem.
27 What Expert Systems Can and Can’t Do An expert system canHandle massive amounts of informationReduce errorsAggregate information from various sourcesImprove customer serviceDecrease personnel time spent on tasksReduce costAn expert system can’tUse common senseAutomate all processes
28 NEURAL NETWORKS AND FUZZY LOGIC Neural network (artificial neural network or ANN) – an artificial intelligence system that is capable of finding and differentiating patternsA neural network can learn by example and can adapt to new concepts and knowledge.Neural networks are widely used for visual pattern and speech recognition systems.Neural networks are called predictive systems since they can see patters in huge volumes of information.See examples on page 109.
29 Neural Networks Can…Learn and adjust to new circumstances on their ownTake part in massive parallel processingFunction without complete informationCope with huge volumes of informationAnalyze nonlinear relationships
30 Fuzzy LogicA way of reaching conclusions based on ambiguous or vague information. E.g. temperature.Fuzzy logic – a mathematical method of handling imprecise or subjective informationUsed to make ambiguous information such as “short” usable in computer systemsExamples: Google’s search engine, washing machines, etc.
31 GENETIC ALGORITHMSGenetic algorithm – an artificial intelligence system that mimics the evolutionary, survival-of-the-fittest process to generate increasingly better solutions to a problemA genetic algorithm is an optimizing system it finds the combination of inputs that give the best output.
32 Evolutionary Principles of Genetic Algorithms Selection – or survival of the fittest or giving preference to better outcomesCrossover – combining portions of good outcomes to create even better outcomesMutation – randomly trying combinations and evaluating the success of each
33 Genetic Algorithms Can… Take thousands or even millions of possible solutions and combine and recombine them until it finds the optimal solutionWork in environments where no model of how to find the right solution exists
34 INTELLIGENT AGENTSIntelligent agent – software that assists you, or acts on your behalf, in performing repetitive computer-related tasksE.g. the animated paper clip in MS Word that offers suggestions on how to proceed in writing a letter.TypesInformation agentsMonitoring-and-surveillance or predictive agentsData-mining agentsUser or personal agents
35 Information AgentsInformation Agents – intelligent agents that search for information of some kind and bring it backEx: Buyer agent or shopping bot – an intelligent agent on a Web site that helps you, the customer, find products and services you want (Amazon.com)Ex: A CNN Custom News Bot will gather news from CNN on the topics you want to read about.
36 Monitoring-and-Surveillance Agents Monitoring-and-surveillance (predictive) agents – intelligent agents that constantly observe and report on some entity of interest, a network, or manufacturing equipment, for example.E.g:Agents that monitor complex computer networks to predict for system crashes before they happen.Agents that monitor Internet sites, discussion groups, mailing lists, etc., for stock manipulation.Agents that monitor sites for updated information on the topic of your choice.Agents that monitor auction sites for products or sites that you want.
37 Data-Mining AgentsData-mining agent – operates in a data warehouse discovering informationA data-mining agent may detect major shifts in a trend or a key indicator.E.g. Volkswagen’s intelligent agent system might see a problem in some part of the country that is about to cause payments to slow down. Having this information, managers can formulate a plan to protect themselves.
38 User AgentsUser or personal agent – intelligent agent that takes action on your behalfExamples:PrioritizeAct as gaming partnerFill out forms for you“Discuss” topics with you
39 MULTI-AGENT SYSTEMS AND AGENT-BASED MODELING Biomimicry – learning from ecosystems and adapting their characteristics to human and organizational situationsUsed toLearn how people-based systems behavePredict how they will behave under certain circumstancesImprove human systems to make them more efficient and effective
40 Agent-Based ModelingMulti-agent system – groups of intelligent agents have the ability to work independently and to interact with each other.Agent-based modeling – a way of simulating human organizations using multiple intelligent agents, each of which follows a set of simple rules and can adapt to changing conditions.E.g. Agent-based modeling systems are being used to predict the escape routes that people seek in a burning building.
41 Companies that Use Agent-Based Modeling Southwest Airlines – cargo routingP&G – supply network optimizationAir Liquide America – reduce production and distribution costsMerck – distributing anti-AIDS drugs in AfricaFord – balance production costs & consumer demandsEdison Chouest – deploy service and supply vessels
42 Swarm IntelligenceSwarm (collective) intelligence – the collective behavior of groups of simple agents that are capable of devising solutions to problems as they arise, eventually learning to coherent global patterns
43 Characteristics of Swarm Intelligence Flexibility – adaptable to change (small or big) in the environment around it.Robustness – tasks are completed even if some individuals are removed if some members don’t succeed, work gets done.Decentralization – each individual has a simple job to do and performs it without supervision.Self-organization – methods of problem solving are not prescribed from a central authority, but rather developed by the individuals who are responsible for completing the task.