Abstract Suppose we wish to recover a vector x 0 โ โ ๐ (e.g., a digital signal or image) from incomplete and contaminated observations y = A x 0 + e ; A is an ๐ ร ๐ matrix with far fewer rows than columns (๐ โช ๐) and e is an error term. Is it possible to recover x 0 accurately based on the data...
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