Pairwise graphical/numerical comparisons can be used to express your judgment about the relative importance or preference or likelihoods of the two elements.
In the example below, we are asked to compare the relative importance of the two objectives (Cost of Ownership and Performance) for a decision of which car to purchase.
You can enter a judgment by clicking or dragging the slider bar or by entering a number in the left or right boxes below the slider bar.
The judgment above shows that "Performance" is about twice as important as the "Cost of Ownership" with respect to the decision "Purchase a new car."
You can drag the bar only up to the ratio 9:1 as the extreme.
Judgments with ratios > 9 to 1 can be entered numerically which will move the slider on the extra white spaces from 9.
Graphical judgments can also be entered by clicking on the chevron icons 
or 
. If the mouse is held down on either of these two icons, the slider will continue to move in the appropriate direction with increasing increments the longer the mouse is depressed.
Additionally, you can click on either of the elements being compared to move the slider in the direction of that element.
If you realize that your judgment is inverted, you can click on the
icon.
Your judgment will be automatically recorded when you go to another step, such as by clicking 
.
You can also enter judgments about the relative preference of two alternatives with respect to an objective by using the pairwise graphical/numerical comparison method.
How to Navigate in the Evaluation?
The Project Manager decides the navigation options available during the evaluation.
By default, the following navigation box and buttons are available at the bottom of the evaluation page.
Sequential Navigation:
The easiest and most common way to proceed through the evaluation is sequential -- by clicking the
button after entering any information requested on each page. You can go back to a previous step using the 
button.
If you have previously entered judgments and request to go back to an earlier step (see below), click 
to jump to the next screen that is unassessed.
Non-Sequential Navigation:
Depending on options set by the Project Manager, you may have considerable flexibility in navigating through the evaluation without sequentially going step by step. We recommend that you do this only if you have used Comparion before.
The "Current Step'' icon
at the bottom left of the screen can be used to display a pop-up view of the hierarchy. By clicking on any element in the hierarchy, you will jump to the first screen that elicits judgments with respect to that element. The "with respect to" for the current step is shown in blue.
If the Project Manager enables displaying the navigation box, you can click on any step to move either forward or backward.
The current step is displayed with a dark background. The step numbers are colored as follows:
- Red: judgment has not yet been made
- Black: judgment has been made
- Blue: Results or information steps
The number of steps (pages shown during the evaluation) is NOT the same as the number of evaluations because:
a) some pages show information or results; and
b) some pages may have multiple evaluations.
If you want to navigate directly to a step (assuming you remember what is at that step), you can click on the numbered step button, or you can click on the ellipses and be prompted for the step:
Click the "Current Step" 
This option is very useful if you want to have a quick look at all the steps of the evaluation with their short descriptions, which enables you to quickly jump to any step. We recommend that you use this option for better navigation, especially on large structured models. Note that the color-coding is the same as for navigation box steps.
