In this paper, we present a new environment of negotiation in a multi-agents system for the electronic market. Our environment presents two protocols of negotiation, namely; the protocol of negotiation by auction and the contract net protocol. The choice of the protocol to be used, is made according to the type of product negotiate, for certain products, we use the auction, and for others we use the technique of contract net protocol.

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[15] Wirman P., Wellman M., and Walsh W., “The Michigan Internet Auction Boot: A Configurable Auction Server for Human and Software Agent,” May 1998. Samir Kechidis a teacher of computer science and software engineering at Algiers University of Science and Technology USTHB. He received his MSc degree in computer science and software engineering from USTHB, and currently working toward his PhD in computer science and software engineering. His research interests include multiagent systems, negotiation in e-commerce and retrieval information. Habiba Drias is a professor of computer science and the general director of National Institute of Education in Computer Sciences, Algeria. She has received the MSc degree in computer science from Case Western Reserve University, Cleveland, Ohio, USA in 1984 and the PhD degree in computer science from Algiers University of Science and Technology USTHB in 1993, prepared at Paris 6 University from 1988 to 1992. She has taught compiling, architecture, operating systems, computational complexity, problem solving, multiagent systems at Algiers, Paris and Toulouse, France. Her research interests include the satisfiality problem, computational complexity, metaheuristics, multiagent systems and e-commerce. She has published over 40 papers in journals and conferences and supervised over a hundred BSc and MSc students projects and theses.