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ROC curves illustrate performance on a binary classification problem where classification is based on simply thresholding a set of scores at varying levels. Lenient thresholds give high sensitivity but low specificity, strict thresholds give high specificity but low sensitivity the ROC curve plots this trade-off over a range of thresholds (usually with sens vs 1-spec, but I prefer sens vs spec this code gives you the option). It is theoretically possible to operate anywhere on the convex hull of an ROC curve, so this is plotted too. The area under the curve (AUC) for a ROC plot is a measure of overall accuracy, and the area under the ROCCH is a kind of upper bound on what might be achievable with a weighted combination of differently thresholded results from the given classifier

PID控制器的模型仿真，结果三环的仿真正确(PID controller model simulation, the results of three-ring of the simulation correctly)

ECG心电图 峰值检测 Inputs ecg : raw ecg vector fs : sampling frequency view : display span of the signal e.g. 8 seconds (8 seconds is the default) Outputs indexes and amplitudes of R_i, R_amp, etc heart_rate computed heart rate buffer_plot : processed signal(ECG peak detect analysis Inputs ecg : raw ecg vector fs : sampling frequency view : display span of the signal e.g. 8 seconds (8 seconds is the default) Outputs indexes and amplitudes of R_i, R_amp, etc heart_rate computed heart rate buffer_plot : processed signal)

说明：  square wave is used to produce square signals.

应用PCA（主成分分析）进行人脸识别的matlab程序，有较高成功率(PCA (Principal Component Analysis) face recognition Matlab procedures, which have a higher success rate)

Simulink for Inverted pendulum.

matrix computation book

指纹识别算法的matlab程序，用的算法是gabor滤波器(matlab program of fingerprint recognition algorithm , using the algorithm of gabor filter)

最小二乘法测向技术研究，很好的文章，大家一起研究一下(Least squares method to measure the technology, very good article, we study together)

learnigng of modelsim in matlab