data ....\iris ....\....\test.dat ....\....\test_sol.dat ....\....\training.dat ....\polynomial ....\..........\test.dat ....\..........\test_sol.dat ....\..........\training.dat ....\sonar ....\.....\test.dat ....\.....\test_sol.dat ....\.....\training.dat ....\weighting ....\.........\test.dat ....\.........\test_sol.dat ....\.........\training.dat input_layer.java layer.java middle_layer.java network.java NN.java output_layer.java