sistem pendukung keputusan - universitas brawijaya · alter's output classification other...
TRANSCRIPT
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Sistem PendukungKeputusanM. Ali Fauzi
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Decision Support System
M. Ali Fauzi
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Decision Support Systems Concepts, Methodologies, and Technologies: An Overview
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DSS Example :Opening Vignette
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Opening Vignette
“Decision Support System for Health Care”
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Opening Vignette
Projected Vacancy Rate versus Desired Vacancy Rate
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Opening Vignette
"What-if" scenario with 6 additional RN recruiters
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Opening Vignette
Demanded Hours versus Total Actual Hours versus Total Actual Hours with New Hires
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DSS Configuration
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DSS Conf.
Many configurations exist; based on
~ management-decision situation ~ specific technologies used for support
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DSS Conf.
DSS have three basic components
~ Data~ Model~ User Interface~ (optional) Knowledge
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DSS Conf.
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DSS Description
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DSS Desc.
An early definition of DSSA system intended to support managerial decision makers in semistructured and unstructured decision situations
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An early definition of DSSmeant to be adjuncts to decision makers (extendingtheir capabilities but not replacing their judgment)
DSS Desc.
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An early definition of DSSaimed at decisions that required judgment or at decisions that could not be completely supported by algorithms
DSS Desc.
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An early definition of DSSwould be computer based; operate interactively; and would have graphical output capabilities…
DSS Desc.
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DSS is an approach (or methodology) for supportingdecision making
DSS Desc.
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uses an interactive, flexible, adaptable computer-based information system (CBIS)
DSS Desc.
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developed (by end user) for supporting the solution to a specific nonstructuredmanagement problem
DSS Desc.
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uses data, model and knowledge along with a friendly (often graphical; Web-based) user interface
DSS Desc.
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incorporate the decision maker's own insights
DSS Desc.
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supports all phases of decision making
DSS Desc.
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can be used by a single user or by many people
DSS Desc.
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New Term :Business Intelligent
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Evolution of DSS into Business IntelligenceUse of DSS moved from specialist to managers, and then whomever, whenever, wherever
Business Intelligence
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Evolution of DSS into Business IntelligenceEnabling tools like OLAP, data warehousing, data mining, intelligent systems, delivered via Web technology have collectively led to the term “business intelligence” (BI) and “business analytics”
Business Intelligence
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BI is an umbrella term that combines architectures, tools, databases, analytical tools, applications, and methodologies
Business Intelligence
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Like DSS, BI a content-free expression, so it means different things to differentpeople
Business Intelligence
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BI's major objective is to enable easy access to data (and models) to provide business managers with the ability to conduct analysis
Business Intelligence
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BI helps transform data, to information (and knowledge), to decisions and finally to action
Business Intelligence
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The term BI was coined by the Gartner Group in the mid-1990s
Business Intelligence
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A BI system has four major components
~ Data warehouse~ Business analytics~ Business performance management (BPM)~ User interface
BI Components
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BI Components
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The data warehouse is a large repository of well-organized historical data
BI Components
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business analytics, a collection of tools for manipulating, mining, and analyzing the data in the data warehouseallow transformation of data into information and knowledge
BI Components
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business performance management (BPM) allows monitoring, measuring, and comparing key performance indicators
BI Components
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a user interface (e.g., dashboard) allows access and easy manipulation of other BI components
BI Components
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MicroStrategy, Corp. distinguishes five styles of BI and offers tools for each
Business Intelligence
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1. report delivery and alerting2. enterprise reporting (using dashboards and scorecards)3. cube analysis (also known as slice-and-dice analysis)4. ad-hoc queries5. statistics and data mining
BI Styles
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DSS – BI Relationship
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First, their architectures are very similar because BI evolved from DSS
DSS-BI Relationship
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Second, DSS directly support specific decision making, while BI provides accurate and timely information, and indirectly support decision making
DSS-BI Relationship
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Third, BI has an executive and strategy orientation, especially in its BPM and dashboard components, while DSS, in contrast, is oriented toward analysts
DSS-BI Relationship
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Fourth, most BI systems are constructed with commercially available tools and components, while DSS is often built from scratch
DSS-BI Relationship
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Fifth, DSS methodologies and even some tools were developed mostly in the academic world, while BI methodologies and tools were developed mostly by software companies
DSS-BI Relationship
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Sixth, many of the tools that BI uses are also considered DSS tools (e.g., data mining and predictive analysis are core tools in both)
DSS-BI Relationship
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A DSS is typically built to support the solution of a certain problem (or to evaluate a specific opportunity). This is a key difference between DSS and BI applications
DSS-BI Relationship
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BI systems monitor situations and identify problems and/or opportunities, using variety of analytic methods
DSS-BI Key Diff.
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In BI, The user generally must identify whether a particular situation warrants attention
DSS-BI Key Diff.
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Reporting/data warehouse plays a major role in BI
DSS-BI Key Diff.
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DSS often has its own database and models
DSS-BI Key Diff.
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DSS Characteristics and Capabilities
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BI Characteristics and Capabilities
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DSS are generally built to solve a specific problem and include their own database(s)
DSS-BI relationship
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BI applications focus on reporting and identifying problems by scanning data stored in data warehouses
DSS-BI relationship
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Both systems generally include analytical tools (BI called business analytics systems)
DSS-BI relationship
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Although some may run locally as a spreadsheet, both DSS and BI uses Web
DSS-BI relationship
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Although some people equate DSS with BI, these systems are not, at present, the same
DSS-BI relationship
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some people believe that DSS is a part of BI—one of its analytical tools
DSS-BI relationship
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others think that BI is a special case of DSS that deals mostly with reporting, communication, and collaboration (a form of data-oriented DSS)
DSS-BI relationship
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BI is a result of a continuous revolution and, as such, DSS is one of BI's original elements
DSS-BI relationship
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DSS : Capabilities and classification
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DSS Capabilities
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Business analytics implies the use of models and data to improve an organization's performance and/or competitive posture
DSS Capabilities
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Web analytics implies using business analytics on real-time Web information to assist in decision making; often related to e-Commerce
DSS Capabilities
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Predictive analytics describes the business analytics method of forecasting problems and opportunities rather than simply reporting them as they occur
DSS Capabilities
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Two major types (Alter):Model-oriented DSSData-oriented DSS
DSS Classifications
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Data-driven DSS are a form of support system that focuses on the provision of internal (and sometimes external) data to aid decision making
Data Oriented DSS
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Data driven DSS or data oriented DSS allows for processing of data that is stored in a database or data warehouse.
Data Oriented DSS
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The information is categorized chronologically, weekly sales, monthly costs, etc., and the DSS is used to answer specific queries, e.g., showing trend lines in sales, growth, costs etc.
Data Oriented DSS
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Model-driven DSS incorporate the ability to manipulate datato generate statistical and financial reports, as well as simulation models, to aid decision-makers.
Model Oriented DSS
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Model driven DSS allows for processing of information using quantitative models. For example, predicting future costs, tax planning are typically done using model driven DSS.
Model Oriented DSS
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~ Communication ~ Data driven~ Document driven~ Knowledge driven~ Model driven DSS
Other Classification
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~ Institutional and ad-hoc DSS(Donovan and Madnick)~ Personal, group, and organizational support(Hackathorn and Keen)
Other Classification
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~ Individual support system vs group support system (GSS)~ Custom-made systems vs ready-made systems
Other Classification
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Holsapple and Whinston's Classification~ The text-oriented DSS~ The database-oriented DSS. ~ The spreadsheet-oriented DSS~ The solver-oriented DSS~ The rule-oriented DSS (include most knowledge-driven DSS, data mining, management, and ES applications)~ The compound DSS
Other Classification
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Alter's Output Classification
Other Classification
Orientation Category Type of Operation
Data File drawer systems Access data items
Data analysis systems Ad hoc analysis of data files
Data or
models
Analysis information
systems
Ad hoc analysis involving
multiple databases and small
models
Models Accounting models Standard calculations that
estimate future results on the
basis of accounting definitions
Optimization models Calculating an optimal solution to
a combinatorial problem