中文摘要：

为了改进可拓神经网络的性能，提出一种基于阴影集的数据选择方法．通过该方法获取用于训练可拓神经网络的训练样本，进而改进可拓神经网络的性能．针对可拓神经网络的特点，选择核数据和边界数据作为可拓神经网络的训练样本；利用基于阴影集的数据选择方法，可以自动获取核数据和边界数据．实验结果表明，与传统可拓神经网络相比，改进的可拓神经网络不仅节约了训练时间，而且网络的泛化能力和分类识别准确度得到了有效提高．

英文摘要：

To improve the performance of extension neural network （ENN）, a data selection method based on shadowed sets was proposed. This method was used to obtain training sample data for improving the performance of ENN. According to the characteristics of ENN, core data and boundary data were selected as training data for ENN; using shadowed-sets-based data selection method, core data and boundary data could be captured automatically. Experimental results indicate that the learning speed of the improved extension neural network （IENN） is faster than traditional ENN. Moreover, the generalization ability and the recognition accuracy are improved effectively.