The entropy-based measurement conjecture for binary sparse recovery

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Let AA be the measurement matrix in the linear system

Ax=b.Ax=b.

Assume that the entries of AA are independent and identically distributed according to an absolutely continuous distribution. Let xx be a binary kk-sparse solution, and let HH denote the binary entropy function.

Entropy-based measurement conjecture. For sufficiently large nn, the linear program referred to as LP~ exactly recovers xx from nH(k/n)/2nH(k/n)/2 measurements.

This conjecture proposes an information-theoretic measurement threshold for exact recovery of binary sparse solutions under absolutely continuous measurement ensembles. The supplied text gives no resolution, so its status remains open.

References

Primary source

T. S. Jayram, Soumitra Pal and Vijay Arya, “Recovery of a Sparse Integer Solution to an Underdetermined System of Linear Equations”, arXiv:1112.1757 (2011).

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