[IEEE 2014 Joint 7th International Conference on Soft Computing and Intelligent Systems (SCIS) and 15th International Symposium on Advanced Intelligent Systems (ISIS) - Kita-Kyushu, Japan (2014.12.3-2014.12.6)] 2014 Joint 7th International Conference on Soft Computing and Intelligent Systems (SCIS) and 15th International Symposium on Advanced Intelligent Systems (ISIS) - Hybrid feedback GMDH-type neural network using principal component-regression analysis and its application to medical image recognition of heart regions