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1Decision Support System by Simulation Model (Ajarn Chat Chuchuen)
CHAPTER 2
Architecture of Decision Support System
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2.1 Meaning Architecture of Decision Support System
What is Architecture of Decision Support System?
Structure of DSS componentsRelation between DSS componentsRelation between external
environment
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2.2 Advantage of architecture of DSS
Know how the component working Share resource by any department Make the sequence in the process Communicate between component Support group decision Support planning more efficiency
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2.3 Factors of DSS Architecture Development
Organization’s Strategy Consider in master plan and follow its
Level of Management Type of problem Structured Semi
structured Unstructured Characteristic of organization
business
Decision Support System by Simulation Model (Ajarn Chat Chuchuen)
5Decision Support Systems and Intelligent Systems, Efraim Turban and Jay E. Aronson, 6th edition,Copyright 2001, Prentice Hall, Upper Saddle River, NJ
2.4 Components of DSS Architecture
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4 Main components of DSS architecture
Data ManagementModel ManagementUser Interface ManagementKnowledge Management
2.4 Components of DSS Architecture
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Tool for develop DSS
HardwareOperating System (OS)Network System SoftwareModeling tools
2.4 Components of DSS Architecture
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Environment of DSS
UserProgrammerExternal Data
2.4 Components of DSS Architecture
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Component of Data ManagementDatabaseDatabase Management System (DBMS)Data DirectoryQuery FacilityExtraction
2.5 Data Management
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2.5 Data Management : Structure
ExternalData
Sources Finance Marketing Production Personnel Other
Internal DataSources
ExtractionOrganizational
KB
Private,personal data
Corporatedata
warehouse
Interfacemanagement
ModelManagement
KBSubsystem
DecisionSupport
database
DBMS
Queryfacility
DataDirectory
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Captures/extracts data for inclusion in a DSS database Updates (adds, deletes, edits, changes) data records and
files Interrelates data from different sources Retrieves data from the database for queries and reports Provides comprehensive data security (protection from
unauthorized access, recovery capabilities, etc.) Handles personal and unofficial data so that users can
experiment with alternative solutions based on their own judgment
Performs complex data manipulation tasks based on queries
Tracks data use within the DSS Manages data through a data dictionary
The Capabilities of DBMS in a DSS
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2.6 Model Management
Model base Model base management system Modeling language Model directory Model execution, integration, and
command processor
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2.6 Model Management
Model Base Contains routine and special statistical, financial,
forecasting, management science, and other quantitative models that provide the analysis capabilities in a DSS.
Model building blocks can be Employed on their own for applications Used as components of larger models Used to determine the values of variables and
parameters in a model Modeling tools
C+, JAVA, Excel
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2.6 Model Management
Model execution is the process of controlling the actual running of the
model.
Model integration involves combining the operations of several models
when needed
Model command processor is used to accept and interpret modeling instructions
from the user interface component and route them to MBMS, model execution, or integration functions.
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2.6 Model Management : Structure
Models (Model Base)•Strategic, tactical, operational
•Statical, financial, marketing, management science, accounting, engineering, etc.
•Model building blocks
Model Directory
Model Base Management
•Modeling command: creation•Maintenance: update•Database interface•Modeling language
DataManagement
InterfaceManagement
KBSubsystem
Model execution, Integration, and
Command processor
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2.6 Model Management
Major Functions of the MBMS
Create models Allows users to manipulate models Stores, retrieves and manages different types of
models Accesses and integrates the model building blocks Catalogs and displays the directory of models Tracks model data and application use Interrelates models with appropriate linkages with the
database Manages and maintains the model Uses multiple models
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2.7 Knowledge Management
Provides expertise in solving complex unstructured and semi-structured problems
Expertise provided by an expert system or other intelligent system
Advanced DSS have a knowledge based (management) component
Leads to intelligent DSS Example:
Data mining
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2.7 Knowledge Management
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2.7 Knowledge Management
Major Functions of the KBMS
Providing tools for decision in special case Intelligent Decision modeling System Analysis for uncertainty situation
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2.8 User Interface Management
Includes all communication between a user and the MSS
Graphical user interfaces (GUI) Voice recognition and speech synthesis
possible
To most users, the user interface is the system
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Data ManagementAnd DBMS
KB Subsystem
Model ManagementAnd MBMS
User InterfaceManagementSystem (UIMS)
Natural Language Processor
InputActionLanguage
Output
Display Language
Printers, Plotters Users
Terminal
2.8 User Interface Management : Structure
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2.8 User Interface Management Major Capabilities of The UIMS Provides a graphical user interface-web browser Accommodates the users with a variety of input devices Presents data with a variety of formats and output devices Gives users help capabilities, prompting, diagnostic and suggestion
routines Provides interactions with the database and the model base Stores input and output data Provides color graphics, 3-dimensional graphics, and data plotting. Has windows to allow multiple functions to be displayed concurrently Can support communication among and b/w users and builders of
MSS Provides training by example Provides flexibility and adaptiveness Interacts in multiple, different dialog styles Captures, stores, and analyze dialog usage
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The User
Different usage patterns for the user, the manager, or the decision maker
Managers Staff specialists Intermediaries
1. Staff assistant2. Expert tool user3. Business (system) analyst4. GSS Facilitator
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DSS Hardware
Evolved with computer hardware and software technologies
Major Hardware Options Mainframe Workstation Personal computer Web server system
Internet Intranets Extranets
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Question ???