%0 Journal Article %T An Overview of the Theory of Instances Computational Complexity %A Jorge A. Ruiz-Vanoye %A Ocotl¨˘n D¨Şaz-Parra %J International Journal of Combinatorial Optimization Problems and Informatics %D 2011 %I International Journal of Combinatorial Optimization Problems and Informatics %X The theory of the computational complexity is a subject of international interest of scientific, technological and enterprise organizations. The computational complexity contains diverse elements such as the classes of problems complexity (P, NP, NP-hard and NP-complete, and others), complexity of algorithms (it is a way to classify how efficient is an algorithm by means the execution time to solve a problem with the worst-case input), complexity of instances (it is computational complexity measures to determine the complex of the problems instances), and others elements. This work is focused on presenting a review of the theory of instances computational complexity. %K Complexity of instances %K complexity of algorithms %K Shannon %K Ruiz-Vanoye %K D¨Şaz-Parra. %U http://ijcopi.org/ojs/index.php?journal=ijcopi&page=article&op=view&path%5B%5D=60&path%5B%5D=77