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Comment: Published by Scroll Versions from space PD and version Rudy

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  • Analysis Scope: This read-only field shows the data elements that are included in the optimization. The scope is set with the Edit Scope command.
  • Analysis Type: This is the type of analysis to be performed. It can be one of the following:
    • Estimate Based on Plan: The goal of this type of analysis is to determine what will be required to achieve the LOS program created in the Desired LOS Plan window. This type of analysis uses the work plan type selected in the Work Plan Type field. Since the LOS goal in the work plan already contains the objective and constraints, you do not need to use the Constraints pane. If a defect has no goal in the Setup Desired LOS Plan window, then the current level of service is maintained for that defect.
    • Multi-constraint Optimization: The goal of this type of analysis is to determine what will be required to achieve the objective under certain constraints, all of which are given in the Constraints pane.
  • Defect Survey Year: This column provides the year when the defect survey was performed.
  • Fiscal Year – This column provides the year from which performance guidelines are taken.
  • Fiscal Year for Accomplishments: This column provides the year that will be used for work order data.
  • Has Results: This check box indicates if the optimization has already been run. When a check mark is not displayed, then the results information shown in the other tabs is irrelevant.
  • Interest Rate: Optionally, a value can be included for the rate of inflation over the analysis period. The value must be entered as a decimal. For example, 3% is entered as 0.03: not 3.
  • Inventory Year: This column provides the year that will be used for equipment and materials data.
  • Maint Index: This column shows the maintenance index that is to be maximized during analysis. The maintenance index is selected from a drop-down list that contains the maintenance indices established in the Setup Indices window.
  • Make LP File: When this check box is selected, an LP optimization definition file is generated and will be available for inspection after the analysis is run. This file format is somewhat easier to read than the standard MPS file format. Note that the LP-format file is only generated for user inspection; the MPS-format file is always passed to the solver. This check box must be selected if you want to use the Download LP File command.
  • Number of Nodes in Solution: This field sets the maximum number of decision nodes passed into the Integer Solver. This is accomplished by running a heuristic search algorithm prior to running the solver that eliminates decision nodes that are unlikely to change during the actual Integer Programming optimization. A value of 0 passes all nodes to the solver. See How 'Number of Nodes ' Worksin Solution for more information.
  •  Round Cost: This field causes the system to round the cost of projects to the selected rounding value before submitting the project to the solver engine. The greater the rounding, the faster the solver will converge on a solution.
  • Scenario Name: This is a short description of the scenario. This description should be informative to other users.
  • Scenario Number: This is a sequential number automatically assigned to identify the scenario. It cannot be edited.
  • Note: To find a particular scenario, enter the scenario number in the field at the top of the pane and select the Find Scenario button.
  • Send Email Notifications?: When this check box is selected, the system will send an email when the scenario finishes. The system sends the email to the email address of the logged-on user as configured in the User Names and Access window.
  • Solver Time Limit (s): This field sets the maximum amount of time (in seconds) that the analysis will be allowed to run before settling on a solution. (In some analyses, many optimal solutions are available and the routine will "hunt" between each solution without settling on one and ending. Since these solutions are only marginally different than one another, forcing the routine to finish by setting the maximum amount of time that it can "hunt" is necessary and appropriate.)
  • Work Plan Type: This field provides a drop-down list of all available work plans.

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