Predictive modeling: least squares method for compression of time-series data

Details Predictive modeling: least squares method for compression of time-series data Predictive modeling: least squares method for compression of time-series data

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spie.3229..340m&link_type=abstract

Proc. SPIE Vol. 3229, p. 340-347, Multimedia Storage and Archiving Systems II, C.-C. J. Kuo; Shih Fu Chang; Venkat N. Gudivada;

Computer Science

Multimedia

Scientific paper

Time-series data form a major class of numerical data that is stored in statistical databases. In an earlier paper, we instantiated a framework in an effort to automate the process of compression, by designing comparative predictive models for data sources which are time- dependent. In this paper, we include one more model for compression of time-series data, into this framework. This model uses the method of least squares and the parameters in this model are optimized by an off-line process using this method; it allows the data to be efficiently encoded using a combination of Golomb and gamma coding techniques. We achieve enhanced compression performance as compared tour previous models and performs better than existing compression techniques as well. We apply the model to real work data sources such as astrophysical, geographical and business data sources.

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