A note on the P-time algorithms for solving the maximum independent set problem

In this article, the problem of finding maximum (weight) independent set (M(W)IS) is investigated. It is known that this problem belongs to the class of NP-hard problems. Although, there are polynomial time (P-time) algorithms to solve the M(W)IS problem for some special classes of graphs. Here, we propose a general scheme which extends all of classes that the M(W)IS problem is solvable for them in P-time. This general scheme, based on any P-time algorithm for a class of graphs C, generates a new P-time algorithm to solve the M(W)IS problem for graphs in an extension of the class C. Moreover, this new algorithm is robust.