The following publications are possibly variants of this publication:
- Improved fast search method for vector quantization using discrete walsh transformZhibin Pan, Koji Kotani, Tadahiro Ohmi. icip 2004: 3177-3180
- Performance Comparison between Equal-Average Equal-Variance Equal-Norm Nearest Neighbor Search (EEENNS) Method and Improved Equal-Average Equal-Variance Nearest Neighbor Search (IEENNS) Method for Fast Encoding of Vector QuantizationZhibin Pan, Koji Kotani, Tadahiro Ohmi. ieicet, 88-D(9):2218-2222, 2005. [doi]
- Fast search method for vector quantization by simultaneously using two subvectorsZhibin Pan, Koji Kotani, Tadahiro Ohmi. icmcs 2008: 729-732 [doi]
- An improved full-search-equivalent vector quantization method using the law of cosinesZ. Pan, K. Kotani, T. Ohmi. spl, 11(2):247-250, 2004. [doi]