Determining estimation variance associated with project planning

摘要

Method and system for determining estimation variance associated with project planning are provided. In one aspect, information associated with a project is obtained and initial estimations for the tasks in the project are determined using available information. The tasks are performed and actual measurements are obtained from the completed tasks. The actual measurements are used to revise the estimates of the remaining tasks. The revised estimates are used to compute a project level estimate and a variance on that estimate, and to enable better project management.

主权项

1. A computer-implemented method of determining estimation variance associated with project planning, comprising:
obtaining information associated with a project, said project comprising a plurality of tasks; determining, by a processor, initial estimates and estimate variances of the plurality of tasks from the information; obtaining actual measurements associated with a selected task from the plurality of tasks after said selected task is executed; computing a difference between an initial estimate associated with the selected task and the actual measurements as the project progresses; revising, using the computed difference and the estimate variances, the initial estimates associated with remaining one or more tasks in the project, wherein the revising is further based on a design document created based on executing the selected task of the project; and determining estimate variances of said remaining one or more tasks based on the revised estimates, wherein the estimate variances include a variance of a statistical estimate computed as an average deviation of the statistical estimate from its estimated mean, said estimate variances including a measure of uncertainty in associated estimates, the method further comprising monitoring differences between previous estimations and ongoing actual values at different stages of a project life cycle as the project progresses.