@conference {simidat191, title = {Multi-class Imbalanced Data-Sets with Linguistic Fuzzy Rule Based Classification Systems Based on Pairwise Learning}, booktitle = {13th International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU)}, series = {Lecture Notes on Artificial Intelligence}, volume = {6178}, year = {2010}, month = {June}, pages = {89-98}, address = {Dortmund (Germany)}, author = {A. Fern{\'a}ndez and M. J. del Jesus and F. Herrera} }