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DSSDSS--
DecisionDecision Support System:Support System:Concept And Philosophy, Artificial Intelligence System,
Knowledge Based Expert System
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Decision Support SystemDecision Support System
y They are an application of Herbert Simon
Model.
y The model has 3 phases:
Intelligence
Design
Choice
y Two types of decisions:-
Programmable and
Non-programmable
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Types of DSSTypes of DSS
y Status inquiry systems
y Data analysis systems
y
Information analysis systemsy Accounting systems
y Model Based systems.
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Ex. Material Management FunctionEx. Material Management Function
Decision Type of System required
Finding and selection of vendor Inquiry System
Procurement Performance analysis system
Pricing Data Analysis
Selection of vendors based on price or
quality, performance
Information analysis system
Selection of order quantity Model Based system
Inventory rationalisation Valuation of inventory and accounting
system
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Facts about DSSFacts about DSS
y The DSSs are developed by the users and
system analysts jointly
y The DSS uses the principles of economics,
science, and engineering and also the
tools & techniques of Management
y The data used in the DSS is drawn from
the information systems developed in thecompany
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Facts about DSSFacts about DSS
y The DSS are developed in isolation and forman independent system subset of the MIS
y The most common use of the DSS is to test
the decision alternatives and also to test thesensitivity of the result to the change in thesystem and assumptions
y The data and information for the DSS are
used from the internal sources such as thedatabase and the conventional files, and fromthe external sources.
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Facts about DSSFacts about DSS
y The DSS are developed in isolation and forman independent system subset of the MIS
y The most common use of the DSS is to test
the decision alternatives and also to test thesensitivity of the result to the change in thesystem and assumptions
y The data and information for the DSS are
used from the internal sources such as thedatabase and the conventional files, and fromthe external sources.
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Types of DSS & their UsersTypes of DSS & their Users
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DSS can be based on three differentDSS can be based on three different
approaches:approaches:
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Artificial IntelligenceArtificial Intelligence
y Intelligence when supported by
knowledge & reasoning abilities becomes
Artificial Intelligence
y When such an artificial intelligence is
packed into a database as a system, then
what we have is AI System.
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Basic CategoriesBasic Categories
y Expert Systems
y Natural Language Systems
y Perception Systems
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Application of AIApplication of AI
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Knowledge ManagementKnowledge Management
y It is the ability of a person to understand
the situation and act effectively.
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Knowledge Management ProcessKnowledge Management Process
y Define, Capture, manipulate, store & develop
y Develop information systems for knowledge
creation
y Design applications for improving
organisations effectiveness
y Create knowledge set
y Keep IC continuously on upgrade to use itas central resource
y Distribute and share to concerned.
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Knowledge management systemsKnowledge management systems
y The knowledge over a period getsdeveloped in the organisation and itresides in people, information files,
databases.y To bring knowledge as critical input in the
management process, it is necessary tohave knowledge management systems.
y It deals with definition, acquisition,construction, storage, delivery andapplication of knowledge.
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Knowledge based Expert SystemKnowledge based Expert System
y It is defined as a mix of theory of the
subject, knowledge of its application,
organised information and the data of
problems and its solutions, and an abilityto generate new avenues to solve the
problem.
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KBES ModelKBES Model
User Control Mechanism
Knowledge Base Inference Mechanism
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MIS & DSS?MIS & DSS?