Title
Candidate hard unique game.
Abstract
We propose a candidate reduction for ruling out polynomial-time algorithms for unique games, either under plausible complexity assumptions, or unconditionally for Lasserre semi-definite programs with a constant number of rounds. We analyze the completeness and Lasserre solution of our construction, and provide a soundness analysis in a certain setting of interest. Addressing general settings is tightly connected to a question on Gaussian isoperimetry. Our construction is based on our previous work on the complexity of approximately solving a system of linear equations over reals, which we suggested as an avenue towards a (positive) resolution of the Unique Games Conjecture. The construction employs a new encoding scheme that we call the real code. The real code has two useful properties: like the long code, it has a unique local test, and like the Hadamard code, it has the so-called sub-code covering property.
Year
DOI
Venue
2016
10.1145/2897518.2897531
STOC '16: Symposium on Theory of Computing Cambridge MA USA June, 2016
Keywords
Field
DocType
Unique Games Conjecture (UGC),Probabilistically Checkable Proofs (PCP),two prover games,real code,half-space,Gaussian isoperimetry,direct product theorem,leakage,approximate real linear equations,semidefinite programming (SDP),Lasserre hierarchy,integrality gap
Discrete mathematics,Combinatorics,System of linear equations,Unique games conjecture,Computer science,Gaussian,Soundness,Completeness (statistics),Hadamard code,Semidefinite programming,Encoding (memory)
Conference
ISSN
ISBN
Citations 
0737-8017
978-1-4503-4132-5
6
PageRank 
References 
Authors
0.53
29
2
Name
Order
Citations
PageRank
Subhash Khot12064112.51
Dana Moshkovitz236819.14