Overview
The Risk Δ (delta) Objectives is a Performance Sensitivity analysis used to dynamically change the impact of the objectives to determine how these changes affect the risks of the events.
This page works similarly as with Impact's Dynamic Sensitivity, where you can also dynamically change the impact of the objectives, except that it is to determine its effect on the impacts of events instead of on the risks of the events.
Each performance sensitivity is composed of:
- The relative impact of the objectives is depicted by the vertical bars and shown numerically on the left side of each bar.
- The relative risk with respect to any of the objectives is shown by the intersection of that events line segment with the objective bars. Thus, for example, Major Train Public Accident has the highest risk due to Public Relations (orange bubble on the Public Relations bar).
- The intersection of the event line segment with the overall axis on the right shows the relative overall risk of the event.
The options above the chart are explained below:
- to display the lines connecting the events from one objective to another. Note: The connecting lines have no meaning; they are included to help you find where a particular event lies as you move from one objective to another.
- to hide the connecting lines and use horizontal ticks instead of circles to indicate the risk of the event due to the objective
- to align the event labels at the right to their corresponding overall risks
- to expand the event labels
- to show the objectives as bars
- to display the performance sensitivity as a radar chart
The Performance graph is also dynamic, so you can temporarily alter the relationship between the events and their objectives by dragging the objective bars up or down.
Note: If there is one event that is highest on every objective, there is probably something missing from the model, or specific objectives were not considered adequately when the judgments were. Iteration should be almost always be performed in such a case since it is extremely rare that any event is highest on every objective.
After temporarily changing the impacts of one or more of the objectives, you can press the reset icon.
By selecting an element in the hierarchy other than the top node, you can see the results with respect to this element rather than the overall results due to the "Objectives" node.
The performance above shows all the event impacts with respect to the selected node "Public Relations".
You can show the local and global objectives impacts on the Objectives Hierarchy at the right using the Local-Global buttons:
You can hide the Objectives Hierarchy at the left using
Click to show/hide the toolbar options:
DIDN'T SEE WHAT YOU ARE LOOKING FOR? Try enabling the Advanced Mode switch at the bottom of the page, this will show the advanced options on this page.
Select Participants and Groups
You can select to display results for one participant or group using
Clicking the button will open a window where you can select a participant or a group.
You can use the prev and the next buttons to cycle through each participant or group.
Filter Events
By default, all events are displayed.
You can select to display the top or bottom 5, 10, or 25 events based on the "All Participants" group risks.
The Advanced filter, allows you to select a specific number for the top N, and base it on another group or participant.
The select /deselection option, allows you to check/uncheck the events.
The filter by events attributes, filter the events base on the attributes specified on the Events page.
Advanced Mode Options
When the Advanced mode is ON, you will see the advanced options of the page you are currently working on.
1. Combined Input Option (CIS)
If the Combined Input Option (CIS) is on (see below) then results for individuals are computed by combining the impacts derived from judgments/ratings for which they had roles, with the combined results for any parts of the model where they did not have a role.
2. Apply User Priorities
If priorities (weights) have been specified for participants, you can use the "User Priorities" check box will enable you to apply or ignore these priorities in generating the results.
3. Synthesize Events WRT top-node
This option is available on all the Sensitivity screens and can only be enabled when a non-covering node other than the top-node is selected on the hierarchy tree.
Enabling this option allows to temporarily change the impact of the children of the selected node and see how these changes will affect the overall impact of the events. If this is OFF, we can then see the change of the impact of the events WRT the selected node.