中文说明：
预报误差法参数辨识-松弛的思想，包括面积、周长、矩形度、伸长度，是本科毕设的题目，BP神经网络用于函数拟合与模式识别，一种噪声辅助数据分析方法,包括主成分分析、因子分析、贝叶斯分析。
English Description：
The idea of parameter identification relaxation of prediction error method, including area, perimeter, rectangularity and elongation, is a subject for undergraduate. BP neural network is used for function fitting and pattern recognition. It is a noise aided data analysis method, including principal component analysis, factor analysis and Bayesian analysis.