Kalman Filter Earned Value Method (KEVM) as probabilistic forecasting method is carried out to produce more accurate predictive value. Forecasting method commonly used by practitioners in this case the construction project contractor in evaluating prediction of duration is deterministic forecasting method Earned Value Method (EVM), Earned Schedule Method (ESM). Estimated project schedule is an important part for project management making decisions that affect the future of the project. In the world of construction, control is needed at the implementation stage, which is prediction or forecasting duration project schedule.
