\input zb-basic \input zb-ioport \iteman{io-port 05622983} \itemau{Je\ogonek drzejowicz, Piotr; Ratajczak-Ropel, Ewa} \itemti{Agent-based gene expression programming for solving the RCPSP/max problem.} \itemso{Kolehmainen, Mikko (ed.) et al., Adaptive and natural computing algorithms. 9th international conference, ICANNGA 2009, Kuopio, Finland, April 23--25, 2009. Revised selected papers. Berlin: Springer (ISBN 978-3-642-04920-0/pbk). Lecture Notes in Computer Science 5495, 203-212 (2009).} \itemab Summary: The paper proposes combining a multi-agent system paradigm with the gene expression programming (GEP) to obtain solutions to the resource constrained project scheduling problem with time lags. The idea is to increase efficiency of the GEP algorithm through parallelization and distribution of the computational effort. The paper includes the problem formulation, the description of the proposed GEP algorithm and details of its implementation using the JABAT platform. To validate the approach computational experiment has been carried out. Its results confirm that the agent based gene expression programming can be considered as a promising tool for solving difficult combinatorial optimization problems. \itemrv{~} \itemcc{} \itemut{} \itemli{doi:10.1007/978-3-642-04921-7\_21} \end