ModEnPBT: A Modified Backtracking Ensemble Pruning algorithm

- A ModEnPBT algorithm is proposed based upon our EnPBT algorithm, aiming at overcoming its drawbacks in solution space definition.
- ModEnPBT has concise definition of solution space, with no redundant solution vectors. It possesses relatively higher computing efficiency.
- Backtracking algorithm can systematically search for the solutions of a large-scale combinatorial optimization problem.
- Experimental results on three benchmark classification tasks verified the effectiveness and superiority of ModEnPBT.