Biometrika 1982 69(2):486-487; doi:10.1093/biomet/69.2.486
© 1982 by Biometrika Trust
A geometrical derivation of the fixed interval smoothing algorithm
CRAIG F. ANSLEY and
ROBERT KOHN
Graduate School of Business, University of Chicago Illinois, U.S.A
The Kalman filter fixed-interval smoothing algorithm is derived from geometrical considerations. This approach is considerably simpler than standard methods.
Key Words: Fixed interval smoothing Kalman filter

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