The PRIET reveals the inherent relationship between the feature selection and PR performance limitation,and is helpful for researching and designing the PR system. The PRIET is proved by the practice of Chinese character recognition system.

• 统一熵理论揭示了模式识别信息过程中特征选择和模式识别性能极限间的内在连系；对模式识别理论研究和系统设计都具有一定指导意义；这一理论在汉字识别的研究和实践中得到了验证.