Abstract. The multiple sequence alignment problem (MSA) can be reformulated as the problem of finding a maximum weight trace in an alignment graph, which is derived from all pairwise alignments. We improve the alignment graph by adding more global information. A new construction heuristic and an evolutionary algorithm with specialized operators are proposed and compared to three other algorithms for the MSA, indicating advantages of the new approaches.
Gabriele Koller, Günther R. Raidl