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5. DSS
Overview, Relevance, Scope,Characteristics and capabilities ofOSS (DSS), Components of OSS,
Classification of DSS
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Decision Making as aComponent of Problem Solving
Design
Choice
Implementation
Monitoring
Problemsolving
Decision
making
Intelligence
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Solution Types
Optimization model Finding the best solution
Satisfying model Finding a good - but not necessarily the
best - solution to a problem
Heuristics Commonly accepted guidelines or
procedures that usually find a goodsolution
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Characteristics of a DSS
Handles large amounts of data from different sources
Provides report and presentation flexibility
Offers both textual and graphical orientation
Supports drill down analysis
Performs complex, sophisticated analysis andcomparisons using advanced software packages
Supports optimization, satisfying, and heuristicapproaches
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Characteristics of a DSS
Performs different types of analyses
What-if analysis
Makes hypothetical changes to problem and
observes impact on the results Simulation
Duplicates features of a real system
Goal-seeking analysis
Determines problem data required for a givenresult
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Capabilities of a DSS
Supports
Problem solving phases
Different decision frequencies
Solves
Structured Problems
Semi-structured and Unstructured Problems
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Web-Based DSS
Web-based decision support systems
Decision support system softwareprovides business intelligence through
web browser clients that accessdatabases either through the Internet ora corporate intranet
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Components of a DSS
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DSS Software System
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Wide Area Decision Network
Characteristics
Location of group members is distant
Decision frequency is high
Virtual workgroups
Groups of workers located around the worldworking on common problems via a GDSS
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Executive Support System(ESS)
Board of directors
President
Function areavice presidents
Function areamanagers
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Operations Support System(OSS)
Operations Support System (OSS)performs management, inventory,engineering, planning, and repair
functions for telecom service providersand their networks.
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Components of OSS
Order processing, accounting, billing and costmanagement
Network inventory, service provision, design
and assign Network discovery and reconciliation, trouble
and fault management, capacitymanagement
Network elements, asset and equipmentmanagement, field service management
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DSS Hardware
Portability has become critical for deployingdecision-making capability in the field,especially for salespersons and technicians
The power and capabilities of the World Wide
Web have a dramatic impact on DSS Communication and collaboration
Download DSS software
Use DSS applications provided by the company
Buy online from application service providers (ASPs)
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DSS Classifications
AIS SIGDSS classification for DSS
Communications-driven and group DSS(GSS)
Data-driven DSS
Document-driven DSS
Knowledge-driven DSS, data mining, and
management ES applications Model-driven DSS
Compound DSS
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DSS Classifications
Holsapple and Whinstons classification
Text-oriented DSS
Database-oriented DSS
Spreadsheet-oriented DSS
Solver-oriented DSS
Rule-oriented DSS
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DSS Classifications
Alters output classification Data
File drawer systems
Data analysis systems Data or models
Analysis information systems
Models Accounting models Representational models
Optimization models
Suggestion models
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DSS Classifications
Other DSS categories
Institutional DSS
A DSS that is a permanent fixture in an
organization and has continuingfinancial support. It deals with decisionsof a recurring nature
Ad hoc DSSA DSS that deals with specific problemsthat are usually neither anticipated nor
recurring
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DSS Classifications
Other DSS categories
Personal support
Group support
Organizational support Group support system (GSS)
Information systems, specifically DSS,
that support the collaborative work ofgroups
Custom-made systems versus ready-made
systems