An algorithm for online Steiner forest achieves constant competitiveness with amortized O(log n) recourse.
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Streaming max-cut requires Ω(n) space for dense graphs but Ω(n log(ε² n)/ε²) space for graphs with Θ(n/ε²) edges when outputting the cut, with matching upper bounds for dense case and similar separations for densest subgraph.
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Online Steiner Forest with Recourse
An algorithm for online Steiner forest achieves constant competitiveness with amortized O(log n) recourse.
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Streaming Complexity Separations for Dense and Sparse Graphs
Streaming max-cut requires Ω(n) space for dense graphs but Ω(n log(ε² n)/ε²) space for graphs with Θ(n/ε²) edges when outputting the cut, with matching upper bounds for dense case and similar separations for densest subgraph.