Innovations and Wold Decompositions of Stable Sequences.
Abstract
For symmetric stable sequences, notions of innovation and Wold decomposition (WD) are introduced, characterized, and their ramifications in prediction theory are discussed. As the usual covariance orthogonality is inapplicable, the non-symmetric James orthogonality is used, thus leading to right and left innovations and Wold decompositions, which are related to regression prediction and least p sub th moment prediction, respectively. Independent innovations and WD are also characterized; and several examples illustrating the various decompositions are presented. Keywords: Stochastic processes; Random variables; Symmetry; Linearity. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1985
- Accession Number
- ADA161437
Entities
People
- Aleksander Weron
- Clyde D. Hardin Jr.
- Stamatis Cambanis
Organizations
- University of North Carolina at Chapel Hill