—It is one of the most important tasks in bioinformatics to identify the regulatory elements in gene sequences. Most of the current algorithms for identifying regulatory elements are easily to converge into a local optimum, and have high time complexity. Therefore, we propose a novel optimization algorithm named ACRI(antcolony- regulatory-identification) for identifying regulatory elements. Based on powerful optimization ability of antcolony algorithm, the algorithm ACRI can not only improve the quality of results, but also solve the problem at a very high speed. Experimental results show that ACRI can obtain higher quality of solutions using less computational time than other traditional algorithms.
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