A novel document ranking method using the discrete cosine transform

Laurence A F Park; Marimuthu Palaniswami; Kotagiri Ramamohanarao

doi:10.1109/TPAMI.2005.2

A novel document ranking method using the discrete cosine transform

IEEE Trans Pattern Anal Mach Intell. 2005 Jan;27(1):130-5. doi: 10.1109/TPAMI.2005.2.

Authors

Laurence A F Park¹, Marimuthu Palaniswami, Kotagiri Ramamohanarao

Affiliation

¹ ARC Centre for Perceptive and Intelligent Machines in Complex Environments, Department of Computer Science and Software Engineering, University of Melbourne, Parkville, Victoria, Australia. lapark@csse.unimelb.edu.au

PMID: 15628274
DOI: 10.1109/TPAMI.2005.2

Abstract

We propose a new Spectral text retrieval method using the Discrete Cosine Transform (DCT). By taking advantage of the properties of the DCT and by employing the fast query and compression techniques found in vector space methods (VSM), we show that we can process queries as fast as VSM and achieve a much higher precision.

Publication types

Comparative Study
Evaluation Study
Research Support, Non-U.S. Gov't
Validation Study

MeSH terms

Algorithms*
Artificial Intelligence*
Computer Graphics
Documentation / methods
Electronic Data Processing / methods*
Handwriting*
Image Enhancement / methods
Image Interpretation, Computer-Assisted / methods*
Information Storage and Retrieval / methods*
Models, Statistical
Numerical Analysis, Computer-Assisted
Pattern Recognition, Automated / methods*
Reading
Reproducibility of Results
Sensitivity and Specificity
Signal Processing, Computer-Assisted
Subtraction Technique
User-Computer Interface