Identify simple fully validated cost models that provide estimation uncertainty with cost estimate . Based on COCOMO variable set . Use machine learning techniques to determine : a ) Minimum number of cost drivers required for NASA domain based cost models ; b ) Minimum number of data records required and c ) Estimation Uncertainty . Build a repository of software cost estimation information . Coordinating tool development and data collection with : a ) Tasks funded by PA&E Cost Analysis ; b ) IV&V Effort Estimation Task and c ) NASA SEPG activities .