A genetic algorithm approach for verification of the syllable-based text compression technique

Provided that an easy mechanism exists for it, it is possible to decompose a text into strings that have lengths greater than one and occur frequently. Having in one hand the set of such frequently occurring strings and in the other the set of letters and symbols, it is possible to compress the text using Huffman coding over an alphabet which is a subset of the union of these two sets. Observations reveal that, in most cases, the maximal inclusion of the strings leads to an optimal length of compressed text. However, the verification of this prediction requires the consideration of ail subsets in order to find the one that leads to the best compression. A genetic algorithm is devised and used for this search process. In Turkish texts, because of the agglutinative nature of the language, a highly regular syllable formation provides a useful testbed.


An improvement on the bounds of Weil exponential sums over Gallois rings with some applications
Ling, S; Özbudak, Ferruh (Institute of Electrical and Electronics Engineers (IEEE), 2004-10-01)
We present an upper bound for Weil-type exponential sums over Galois rings of characteristic p(2) which improves on the analog of the Weil-Carlitz-Uchiyama bound for Galois rings obtained by Kumar, Helleseth, and Calderbank. A more refined bound, expressed in terms of genera of function fields, and an analog of McEliece's theorem on the divisibility of the homogeneous weights of codewords in trace codes over Z(p)2, are also derived. These results lead to an improvement on the estimation of the minimum dista...
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For the first time Boolean functions on 9 variables having nonlinearity 241 are discovered, that remained as an open question in literature for almost three decades. Such functions are found by heuristic search in the space of rotation symmetric Boolean functions (RSBFs). This shows that there exist Boolean functions on n (odd) variables having non, linearity > 2(n-1) - 2 (n-1/2) if and only if n > 7. Using similar search technique, balanced Boolean functions on 9, 10, and 11 variables are attained having a...
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Weil-Serre Type Bounds for Cyclic Codes
GÜNERİ, CEM; Özbudak, Ferruh (Institute of Electrical and Electronics Engineers (IEEE), 2008-12-01)
We give a new method in order to obtain Weil-Serre type hounds on the minimum distance of arbitrary cyclic codes over F(pe) of length coprime to p, where e >= 1 is an arbitrary integer. In an earlier paper we obtained Weil-Serre type bounds for such codes only when e = 1 or e = 2 using lengthy explicit factorizations, which seems hopeless to generalize. The new method avoids such explicit factorizations and it produces an effective alternative. Using our method we obtain Weil-Serre type bounds in various ca...
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Guneri, Cem; Özbudak, Ferruh (Institute of Electrical and Electronics Engineers (IEEE), 2007-02-01)
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Citation Formats
G. Üçoluk and İ. H. Toroslu, “A genetic algorithm approach for verification of the syllable-based text compression technique,” JOURNAL OF INFORMATION SCIENCE, pp. 365–372, 1997, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36507.