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Outputs (107)

Approximating Fixation Probabilities in the Generalized Moran Process (2012)
Presentation / Conference Contribution
Díaz, J., Goldberg, L., Mertzios, G., Richerby, D., Serna, M., & Spirakis, P. (2012, November). Approximating Fixation Probabilities in the Generalized Moran Process. Presented at Proceedings of the Twenty-Third Annual ACM-SIAM Symposium on Discrete Algorithms, SODA 2012, Kyoto, Japan, January 17-19, 2012, Kyoto, Japan

We consider the Moran process, as generalized by Lieberman, Hauert and Nowak (Nature, 433:312--316, 2005). A population resides on the vertices of a finite, connected, undirected graph and, at each time step, an individual is chosen at random with pr... Read More about Approximating Fixation Probabilities in the Generalized Moran Process.

Rank complexity gap for Lovász-Schrijver and Sherali-Adams proof systems (2012)
Journal Article
Dantchev, S., & Martin, B. (2013). Rank complexity gap for Lovász-Schrijver and Sherali-Adams proof systems. Computational Complexity, 22(1), 191-213. https://doi.org/10.1007/s00037-012-0049-1

We prove a dichotomy theorem for the rank of propositional contradictions, uniformly generated from first-order sentences, in both the Lovász-Schrijver (LS) and Sherali-Adams (SA) refutation systems. More precisely, we first show that the proposition... Read More about Rank complexity gap for Lovász-Schrijver and Sherali-Adams proof systems.

Query-driven Parallel Exploration of Large Datasets (2012)
Presentation / Conference Contribution
Atanasov, A., Srinivasan, M., & Weinzierl, T. (2012, October). Query-driven Parallel Exploration of Large Datasets. Presented at Large Data Analysis and Visualization (LDAV), 2012 IEEE Symposium on

Computing vertex-surjective homomorphisms to partially reflexive trees (2012)
Journal Article
Golovach, P., Paulusma, D., & Song, J. (2012). Computing vertex-surjective homomorphisms to partially reflexive trees. Theoretical Computer Science, 457, 86-100. https://doi.org/10.1016/j.tcs.2012.06.039

A homomorphism from a graph GG to a graph HH is a vertex mapping f:VG→VHf:VG→VH such that f(u)f(u) and f(v)f(v) form an edge in HH whenever uu and vv form an edge in GG. The HH-Coloring problem is that of testing whether a graph GG allows a homomorph... Read More about Computing vertex-surjective homomorphisms to partially reflexive trees.