Задача: Определение утилит ранжировки для каждого критерия

Эта задача фокусируется на определения утилит ранжировки для каждого критерия оценки.

Дисциплины: System Engineering Requirements

Назначение

The purpose of this task is to define a set of normalization curves, one for each assessment criterion that will be used to produce a dimensionless Measure of Effectiveness for each solution candidate.

Взаимосвязи

Родительские практики выполнения	Системная инженерия - прецедентный подход
Роли	Основной исполнитель: System Architect	Дополнительные исполнители:
Входы	Обязательный: Отчет по исследованию и выбору решений	Необязательный: Нет
Выходы	Отчет по исследованию и выбору решений

Основное описание

A normalization curve, also known as a utility curve or value function, is used to compute the measure of effectiveness of a candidate solution for a particular assessment criterion. This curve yields a normalized value typically between 0 and 10. The input value to the curve is typically based upon equipment specifications or derived from calculations based upon possible solutions. In this case it is considered as being objective. A utility curve may also be created by knowledgeable project members. In this case the curve reflects the consensus among the group but should be considered as subjective.

Шаги

Select an assessment criterion

There will be a utility curve associated with each assessment criterion. Select an assessment criterion and perform the following steps.

Define utility curve

Define optimum value of assessment criterion.
Set tolerances around target value.
Define the utility values between the upper / lower tolerances and the optimum. The utility values are normalized between 0 and 10 (i.e. the higher the score, the more favorable the evaluation).

Repeat analysis for each assessment criterion

Capture the information defining the utility curve for the subject criterion in the Trade Study report and repeat the previous steps for each criterion.

Дополнительные сведения

Руководства по инструментам	Maintaining the Trade Study Report in DOORS