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Decision Support System
Week 4
19
Other
Undergraduate 1
08/19/2017

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Term
What is a Decision Support System?
Definition
- Does not actively collect data from inputs, it is more software based
Term
Examples of decision support systems
Definition
Auckland Transport App (helps make decision on which bus route is the best option.
Term
What is decision making based on?
Definition
Available information
Term
What is the problem with data these days?
Definition
There is TOO MUCH DATA
- Because it is so easy to capture, store, and share data (e.g. digital images, emails, broadband connections) these days we tend to receive an overwhelming amount of data and very rarely access useful information
- Makes it hard to chose the useful information
Term
Decision Making Process Diagram and explanation
Definition
[image]
CONSIDERATION: Input -> Models -> Insight, Supported by DSS to see different options
DECISION: Made the decision
ACTION: Actually doing it
OUTCOME: So next time you consider this problem you can take this into account to improve

Cycle is a continuous process
Term
Agile Decision Making Diagram
Definition
[image]
- Must constantly compete with to make process shorter
- Time hewer you receive information before taking action is very important
- Can be fully shortened with good Infosystems
Term
What is Analysis Latency?
Definition
Delay from analysis, time it takes to receive information
Term
How to shorten the Agile Decision Making
Definition
Can be fully shortened with good Infosystems:
- With good TPS, can capture data faster
- With good DSS can shorten between having data and analysing info
- With good communication, can shorten the decision latency
Term
What is Decision Latency?
Definition
Time from receiving information an making action
Term
What is Intelligence Density (ID) used for?
Definition
Is used to characterise the intelligence provided by a decision-support tool; for the whole pack of information you get, how much of to os valuable?
“Amount of useful ‘decision support intelligence’ that a decision maker gets from using a system for a certain amount of information”
“How quickly can you get the essence of the underlying data from the input?”

If system can give you a high ID, it is good information
Term
Intelligence Density (ID) equation
Definition
ID = (Usefulness of decision making gleaned) / (Units of analytic time spent by the decision maker)
Term
Qualitative Decision Model
Definition
Faced with a problem => Feed it to mind => Generate Insight
Term
Quantitive Decision Model
Definition
[image]
- A model is a simplified abstraction of reality.
- Decision models are central to decision making and support.
- Perform analysis on a model of reality than on the real system.
Term
Examples of everyday DSS
Definition
- Auckland Transport App
- Google Analytics
Term
Process view of DSS
Definition
[image]
Process = DSS
Term
Three DSS Applications
Definition
- Sensitivity Analysis
- What-if Analysis
- Goal-Seeking Analysis
Term
DSS Applications - Sensitivity Analysis
Definition
A study of the impact that changes in one (or more) parts of a model may have on other parts.
Term
DSS Applications - What-if analysis
Definition
A study of changes in assumptions (input data) about a proposed solution and the possible impact of those changes. e.g. What if I spent $1000 more than budget? How will this effect sales?
Term
DSS Applications - Goal-seeking analysis
Definition
A study to find the input values necessary to achieve a desired level of output (backward solution). e.g. Want to reach $50 000 in sales, create advertising expensive budget
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