The Kalman filter (named after its inventor, Rudolf E Kalman[?]) is an efficient recursive computational solution of the least-squares method[?], which is applicable to distinguishing signals from noise so as to predict changes in a modeled system with time.
... out of which 38.6% have children under the age of 18 living with them, 74.5% are married couples living together, 8.3% have a female householder with no husband ...