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cs.DS2026
Ultrametric Violation Distance: Polynomial Kernel and FPT Algorithm
Fedor V. Fomin, Petr A. Golovach, Yash Hiren More
In the Ultrametric Violation Distance problem, we are given a set of distances between points, and the goal is to modify the minimum number of distances so that the resulting s…
cs.DS2026
Clustering Permutations under the Ulam Metric: A Parameterized Complexity Study
Tian Bai, Fedor V. Fomin, Petr A. Golovach +2
Rank aggregation seeks a representative permutation for a collection of rankings and plays a central role in areas such as social choice, information retrieval, and computational b…