Help - ESTIMATION & CHOICE
General Information
Introduction
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Theory (for beginners)
Theory (advanced)

Data
Projects
Alternatives
Parameters
Classifiers

Plan of Analysis
Structure
General Parameters
Influencing Parameters
Utility Function

Group Model
Experts co-ordination

Analysing Results
Comparative Analysis
Single Alternative Analysis
Benefit/Cost Analysis

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What to start with ...


You have to solve a multicriteria decision problem - it may be task related to the Resource Allocation, Vendor Selection, Strategic Planning, Human Resources Management etc.
In our example let it be "The Car Choice". So, you have to compare and rank three cars.

We will solve this problem in five easy steps!

1. Create a new project.
You just logged in the ESTIMATION AND CHOICE and you can see list of existing projects. Click the link "Create new" on the top, insert 'Cars' into the text field and click 'OK'. Than click 'Cars' in the list of projects.

2. Create list of parameters.
Now you have to define parameters of the alternatives you want to compare. Click pad 'Parameters' , and then create five new parameters of the different types:

Type Parameter
Numeric Top speed
Numeric Fuel efficiency
Logical (Yes/No) Safety Bag
Logical (Yes/No) Air conditioning
Qualitative Fuel Type

For the qualitative parameters there should be classifiers, attached to every parameter of this type. So, attach a new classifier "Types of the Fuel" to the Parameter "Fuel type".

3. Input data.
Click pad 'Alternatives and Analysis' , create three new alternatives "Car1", "Car2" and "Car3", then click every alternative on the list and input data:

Parameter Car1 Car2 Car3
Top speed 180 km/hr 210 km/hr 240 km/hr
Fuel efficiency 3.4 L/100 km 4.7 L/100 km 6.3 L/100 km
Safety Bag No Yes Yes
Air Conditioning Yes No Yes
Fuel Type Natural Gas Diesel Gasoline

4. Create a Plan of Analysis.
After you described the alternatives you have to create a Plan of Analysis reflecting your preferences in this decision process.
Click the pad "Plans of Analysis" and create a new plan 'Cars Analysis', than just click this new plan in the list to open it.

Let's create three General Parameters we want to estimate: 'Driving', 'Safety' and 'Economy' - to do it just click the link 'Create General Parameter'.
After that you have to pick up the Parameters influencing your General Parameters. Let it be like this:

Parameters influencing General Parameter "Driving"
Top speed
Air Conditioning
Fuel Type

Parameters influencing General Parameter "Safety"
Top speed
Safety Bag

Parameters influencing General Parameter "Economy"
Fuel Efficiency
Fuel Type

To include parameters into the General Parameter click name of the General Parameter in the list, than click link "Add Parameter in General Parameter", check Parameters you want to include and click button "Include into General Parameter".

Now you have to define priority (the Weight coefficient) and the Utility function for every Parameter. The Weight coefficient shows how important is this Parameter. The Utility Function shows which values of this Parameter are good and which are bad.

Let's do it first for the General Parameter "Driving". To define Priorities of the Parameters influencing General Parameter "Driving" click the button 'Compare' above the list of Parameters, and then just answer several questions like "Which of these two parameters is more important..." After that the weight coefficients will be calculated automatically.

Click "Define Utility" for the parameter "Air Conditioning", then select "Value YES is better than NO (Desirable quality)".

Click "Define Utility" for the parameter "Top Speed". For the numeric parameters you can define Utility Function using up to five points. Input "180" into field 'Value' for Point1, and than select "Minimally Acceptable" in Select Utility dropdown list for this Point. Than input value '240' for Point2 and select utility "Excellent". Click button 'Submit' and you will see a chart.

Click "Define Utility" for parameter "Fuel Type", then click button 'Compare' and answer the questions like "Which of these Items is more preferable?". The calculated weights describe tne Utility Function for this qualitative parameter.

Similarly you can define Priorities and Utility Functions in the others General Parameters.

And finally you should define the Priorities of the General Parameters. To do it click button 'Compare' above the list of the General Parameters and answer the questions.

Now your Plan of Analysis is ready !

5. Run the analysis.
Click the pad 'Alternatives and Analysis', check all alternatives, select the Plan "Cars Analysis" and click button "Analyze Alternatives ..."
You will see a chart showing ratings for every alternative and a table containing final rangs and ratings, and also rangs and ratings for every General Parameter.
You can analyze every alternative separately - just click name of the alternative on the table or in the chart!