| Presentation | 2003/7/15 Performance of compression with the LZ78 codes for word-valued source Kouji YOSHIDA, Takashi ISHIDA, Shigeich HIRASAWA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The Ziv-Lempel(LZ)codes which are typical universal codes have been proposed modifing algorithms from not only theoretical but practical use. Recently, a word-valued source has been by proposed as a new class of source models, and its entropy rate is analyzed. The LZ78 codes for the word-valued source can be applied with two kinds of methods (i) inclemental parsing for each word (ii) inclemental parsing for each symbol. The performance compression of the LZ78 codes between these two kinds of methods is an interesting theme. In this paper, we show that the upper bound of average redundancy achieves O(1/log n) and consider about validity of LZ78 codes. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | source coding / word-valued source / redundancy / LZ codes |
| Paper # | IT2003-14(2003-07) |
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| Conference Information | |
| Committee | IT |
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| Conference Date | 2003/7/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Theory (IT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance of compression with the LZ78 codes for word-valued source |
| Sub Title (in English) | |
| Keyword(1) | source coding |
| Keyword(2) | word-valued source |
| Keyword(3) | redundancy |
| Keyword(4) | LZ codes |
| 1st Author's Name | Kouji YOSHIDA |
| 1st Author's Affiliation | School of Science and Engineering, Waseda University() |
| 2nd Author's Name | Takashi ISHIDA |
| 2nd Author's Affiliation | School of Science and Engineering, Waseda University |
| 3rd Author's Name | Shigeich HIRASAWA |
| 3rd Author's Affiliation | School of Science and Engineering, Waseda University |
| Date | 2003/7/15 |
| Paper # | IT2003-14(2003-07) |
| Volume (vol) | vol.103 |
| Number (no) | 214 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |