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Electronic Colloquium on Computational Complexity

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REPORTS > KEYWORD > ORACLE MODEL:
Reports tagged with oracle model:
TR05-016 | 13th January 2005
Tomas Feder, Daniel Ford

Classification of Bipartite Boolean Constraint Satisfaction through Delta-Matroid Intersection

Matroid intersection has a known polynomial time algorithm using an
oracle. We generalize this result to delta-matroids that do not have
equality as a restriction, and give a polynomial time algorithm for
delta-matroid intersection on delta-matroids without equality using an
oracle. We note that when equality is present, delta-matroid intersection
more >>>


TR21-141 | 28th September 2021
Alexander Golovnev, Siyao Guo, Spencer Peters, Noah Stephens-Davidowitz

On the (im)possibility of branch-and-bound search-to-decision reductions for approximate optimization

We study a natural and quite general model of branch-and-bound algorithms. In this model, an algorithm attempts to minimize (or maximize) a function $f : D \to \mathbb{R}_{\geq 0}$ by making oracle queries to a heuristic $h_f$ satisfying
\[
\min_{x \in S} f(x) \leq h_f(S) \leq \gamma \cdot ... more >>>




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