00328nas a2200109   4500000000100000000000100001008004100002260003500043100001700078700002000095245010300115       2003                            d  cMay 5–6, 2003aMadrid, Spain1 aJavier Carbo1 aAgapito Ledezma00aA Machine Learning Based Evaluation of a Negotiation between Agents Involving Fuzzy Counter-Offers