~/talk

Coding for Modern Distributed Storage Systems II

Talkat Information Theory Boot Camp 2015 · 2015-01-13..01-16
links:none on file
slides:none on file

Continues the LRC story with explicit constructions and a concrete failure model: a Reed–Solomon variant picks a degree set skipping every (R+1)th monomial to get alphabet size linear in n and local groups from multiplicative cosets; maximal recoverability is defined as correcting every erasure pattern allowed by the topology. Random choices need huge fields; explicit constructions use linearized polynomials plus binary code parity checks to get roughly field size K^H and guarantee that puncturing one per column leaves MDS. Open problems: linear-size fields, tensor-code MR characterization, and tighter lower bounds.

AI-written summary · about

  1. 0:00Intro
  2. 0:22Locality
  3. 14:50Failures
  4. 28:06MDS Codes
  5. 34:01Alphas
  6. 46:22Parity Check
  7. 50:29Lets Imagine
  8. 58:27Thanks
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