6.851: Advanced Data Structures (Spring'14)

Prof. Erik Demaine     TAs: Timothy Kaler, Aaron Sidford


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[+] Dynamic graph upper bounds (L19 + L20)

There weren't any questions about the two dynamic-graphs lectures, but there are lots of relatively new results on dynamic graphs, so I'll survey some of the coolest of them:

  • worst-case dynamic connectivity: polylogarithmic! (with high probability)
  • transitive closure: decent lower bounds (via 3SUM)
  • single-source reachability: connection to fast Boolean matrix multiplication, sublinear update for decremental
  • single-source path counting: strong lower bounds (assuming strong exponential time hypothesis!)
  • single-source shortest paths: lower bound via all-pairs shortest paths
  • sublinear decremental (1 + ε)-approximations
  • distance oracles: (1 + ε)-approximate shortest paths in static graphs
[The video still needs to be recorded or encoded. Stay tuned!]

Lecture notes, page 1/4[previous page][next page][PDF]

Lecture notes, page 1/4[previous page][next page][PDF]

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