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Improving index coding efficiency of Lempel-Ziv-Welch algorithm by dictionary quasi-filling

Improving index coding efficiency of Lempel-Ziv-Welch algorithm by dictionary quasi-filling

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A new approach is proposed to improve the index coding efficiency of LZW. The proposed method does not reduce the code bit length, but instead enlarges the size of the practical dictionary for string matching. To achieve this, a modified dictionary adaptation method called dictionary quasi-filling is used. Experiments show that the proposed method outperforms arithmetic coding for the majority of relatively short test sequences, as well as on all very long sequences.

References

    1. 1)
      • T.A. Welch . A technique for high-performance data compression. IEEE Comput. , 8 - 19
    2. 2)
      • T.C. Bell , J.G. Cleary , I.H. Witten . (1990) Text compression.
    3. 3)
      • J. Ziv , A. Lempel . Compression of individual sequence via variable-rate coding. IEEE Trans. Inf. Theory , 5 , 530 - 536
    4. 4)
      • Horspool, R.N.: `Improving LZW', Proc. Data Compression Conf. (DCC '91), IEEE Computer Society Press.
    5. 5)
      • I.H. Witten , R. Neal , J.G. Cleary . Arithmetic coding for data compression. Comm. ACM , 6 , 520 - 540
    6. 6)
      • Kim, T.Y.: `Two new approaches to improve LZW data compression', 1998, M.S., Seoul National University.
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