From Image Deblurring to Optimal Investments: Maximum Likelihood Solutions for Positive Linear Inverse Problems
从图像去模糊到最优投资：正性线性逆问题的极大似然解法
SUMMARY The problem of recovering an input signal from a blurred output, in an input-output system with linear distortion, is ubiquitous in science and technology. When the blurred output is not degraded by statistical noise the problem is entirely deterministic and amounts to a mathematical inversion of a linear system with positive parameters, subject to positivity constraints on the solution. We show that all such linear inverse problems with positivity restrictions…