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Mohit SinghKunal Talwar MSR NE, McGillMSR SV TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: AA A AA A A A A A A

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Ways to automate getting tighter relaxations Lovász-Schrijver Sherali-Adams Lassere Chvátal-Gomory Often (at least retrospectively), improve LP/SDP gaps Matching, MaxCut, Sparsest Cut, Unique Label Cover [Arora-Bollobás-Lovász 2002] Can we establish limits for these procedures?

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Similar proofs for unique games, CSPs, VC CG hierarchy often not much better than SA Noticeably better for Hypergraph matching What other problems show large gap between clever LP and LS/SA? Does CG capture them?

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