给出了一种极限学习机（elm)算法，并用汽油近红外光谱辛烷值数据集对ELM网络进行训练，最后用ELM对汽油辛烷值进行预测，并对预测结果进行评价。文件内含ELM工具箱，可直接在MATLAB运行。(An extreme learning machine (elm) algorithm is presented, and the ELM network is trained with the data set of gasoline near infrared spectroscopy octane number. Finally, the gasoline octane number is predicted by ELM, and the prediction results are evaluated. The file contains ELM toolbox, which can run directly in MATLAB.)