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High precision simulations of the longest common subsequence problem | | R. Bundschuh
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17 Jun 2001 | | Subject: | Statistical Mechanics; Quantitative Methods | cond-mat.stat-mech q-bio.QM | | Abstract: | The longest common subsequence problem is a long studied prototype of pattern matching problems. In spite of the effort dedicated to it, the numerical value of its central quantity, the Chvatal-Sankoff constant, is not yet known. Numerical estimations of this constant are very difficult due to finite size effects. We propose a numerical method to estimate the Chvatal-Sankoff constant which combines the advantages of an analytically known functional form of the finite size effects with an efficient multi-spin coding scheme. This method yields very high precision estimates of the Chvatal-Sankoff constant. Our results correct earlier estimates for small alphabet size while they are consistent with (albeit more precise than) earlier results for larger alphabet size. | | Source: | arXiv, cond-mat/0106326 | | Services: | Forum | Review | PDF | Favorites | |
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