Mar. 24, 2010 to Mar. 26, 2010
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/DCC.2010.23
Bi-directional context sets extend the classical context-tree modeling framework to situations in which the observations consist of two tracks or directions. In this paper, we study the problem of efficiently finding an optimal bi-directional context set for a given data sequence and loss function. This problem has applications in data compression, prediction, and denoising. The main tool in our construction is a new data structure, the compact bi-directional context graph, which generalizes compact suffix trees to two directions.
context modeling, bi-directional models, suffix trees, compact bi-directional context graphs
Fernando Fernández, Marcelo J. Weinberger, "Efficient Algorithms for Constructing Optimal Bi-directional Context Sets", DCC, 2010, Data Compression Conference, Data Compression Conference 2010, pp. 179-188, doi:10.1109/DCC.2010.23