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Question
已知一组数据x，大概服从拉普拉斯分布，如何才能估计出对应的参数呢？。
我想用f = fittype('a*exp(-(abs(x-b)/c))'); [cfun,gof] = fit(x,y,f); 但是我不知道y呀，我只有一堆数据（一幅图像的DCT系数），应该怎么做呢，拜托老师了，还有就是matlab中...
3 years ago | 1 answer | 0
