QSAR for Toxicities of Organic Substance Using Improved PSO Algorithm Combined with BP Artificial Neural Network

Particle swarm optimization algorithm and Alopex-B algorithm are introduced.By combining Alopex-B with PSO algorithm,a new improved algorithm called PSO-Alopex B is presented.Compared with original PSO,lower failure rates and less error can be achieved when searching the minimum of test functions.It is also used to research QSAR for toxicities of organic substances.The results of both function optimization and QSAR researching show that the improved PSO algorithm is (effective.)