@conference {simidat77, title = {Statistical Comparisons by Means of Non-Parametric Tests: A Case Study on Genetic Based Machine Learning}, booktitle = {Proceedings of the II Congreso Espa{\~n}ol de Inform{\'a}tica (CEDI 2007). V Taller Nacional de Miner{\'\i}a de Datos y Aprendizaje (TAMIDA)}, year = {2007}, month = {September}, pages = {95-104}, address = {Zaragoza (Spain)}, author = {S. Garc{\'\i}a and A. Fern{\'a}ndez and A.D. Ben{\'\i}tez and F. Herrera} }