Transcript Slide 1

DSS Configurations
•It supports individual members and an entire team.
•It is used repeatedly and constantly.
•It has three major components: data, models, and a user
interface.
•It uses subjective, personal, and objective data.
•It is used in the private sector.
•It helps the user to make faster, smarter, better decisions.
DSS Versus EDP
Dimension
Use
User
Goal
Time horizon
Objective
DSS
Active
Line and staff management
Effectiveness
Present and future
Flexibility
EDP
Passive
Clerical
Mechanical efficiency
Past
Consistency
Concepts Underlying DSS Definitions
Source
Gorry and Scott-Morton (1971)
Little (1970)
Alter (1980)
Moore and Chang (1980)
Bonczek et al. (1989)
Keen (1980)
DSS Defined in Terms of
Problem type, system function (support)
System function, interface characteristics
Usage pattern, system objectives
Usage pattern, system capabilities
System components
Development process
What is a DSS Application
•A DSS is an approach (or methodology) for supporting decisionmaking. It uses an interactive, flexible, adaptable CBIS especially
developed for supporting the solution to a specific nonstructured
management problem. It uses data, provides an easy user interface, and
can incorporate the decision-maker’s own insights.
•In addition, a DSS usually uses models and is built (often by end-users)
by an interactive and iterative process. It supports all phases of
decision-making and may include a knowledge component.
•Finally, a DSS can be used by a single user on a PC or can be Webbased for use by many people at several locations.
Key Characteristics and Capabilities of DSS
14
Standalone,
integration and
Web-based
13
Data access
1
Semistructured
and unstructured
problems
12
Modeling
and analysis
11
DSS
Ease of
development
by end users
10
Humans control
the machine
9
Effectiveness,
not efficiency
8
7
Interactive
ease of use
2
Support
managers at
all levels
3
Support
individuals
and groups
4
Interdependent
or sequential
decisions
5
Support
intelligence,
design, choice,
implementation
6
Support variety
of decision
processes and styles
Adaptable
and
flexible
A Schematic View of DSS
Other
computer-based
systems
Internet,
intranets,
extranets
Data: external
and internal
Data
management
Model
management
Knowledge-based
subsystems
User
interface
Organizational KB
Manager (user)
External
models
The Structure of the Model Management Subsystem
Models (Model Base)
•Strategic, tactical, operational
•Statical, financial, marketing,
management science,
accounting, engineering, etc.
•Model building blocks
Model
Directory
Model Base Management
•Modeling commands: creation
•Maintenance: update
•Database interface
•Modeling language
Data
management
Interface
management
Model execution,
integration, and
command processor
Knowledge-based
subsystem
Schematic View of the User Interface System
Data Management
and DBMS
Knowledge-based
subsystem
Model Management
and MBMS
User Interface
Management
System (UIMS)
Natural Language
Processor
Input
Output
Action
Languages
Display
Languages
PC Display
Printers, Plotters
Users