2018

High-dimensional estimation via sum-of-squares proofs

Raghavendra, Prasad, Schramm, Tselil, Steurer, David

Understand

Estimation is the computational task of recovering a hidden parameter $x$ associated with a distribution $D_x$, given a measurement $y$ sampled from the distribution.

  • High dimensional estimation problems arise naturally in statistics, machine learning, and complexity theory.
  • Many high dimensional estimation problems can be formulated as systems of polynomial equations and inequalities, and thus give rise to natural probability distributions over polynomial systems.
  • Sum-of-squares proofs provide a powerful framework to reason about polynomial systems, and further there exist efficient algorithms to search for low-degree sum-of-squares proofs.

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