STOC '98 Proceedings of the thirtieth annual ACM symposium on Theory of computing
Managing gigabytes (2nd ed.): compressing and indexing documents and images
Managing gigabytes (2nd ed.): compressing and indexing documents and images
Relations between average case complexity and approximation complexity
STOC '02 Proceedings of the thiry-fourth annual ACM symposium on Theory of computing
Leveraging predefined huffman dictionaries for high compression rate and ratio
Proceedings of the 6th International Systems and Storage Conference
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Abstract: Preset dictionaries for Huffman codes are used effectively in fax transmission and JPEG encoding. A natural extension is to allow multiple preset dictionaries instead of just one. We show, however, that finding optimal multiple preset dictionaries for Huffman and LZ77-based compression schemes is NP-hard.