Author

Hannane Yaghoubizade

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Preprint Aug 2026

Approval-Based Apportionment: Like Portioning, Approximately like Committee Voting

We study approval-based apportionment, a variant of committee elections in which candidates ("parties") can be selected several times. We show that the proportionality axioms EJR, EJR+, and FJR coincide, and so do PJR, PJR+, and FPJR; that Lindahl priceability, an axiom implying core stability, is equivalent to a notio...

Paul Gölz, Hannane Yaghoubizade · 2 citations

Preprint Aug 2026

A Simplified Analysis of the Good-Bad $3/2$-Approximation Algorithm for Some Minimum-Cost Graph Problems

In this paper, we consider an easy greedy approximation algorithm, the good-bad algorithm, introduced by Cou\"etoux for finding a minimum-cost set of edges such that every connected component has at least $k$ vertices. Cou\"etoux proves that the good-bad algorithm achieves a $3/2$-approximation for this problem. Davis...

Shayan Ranjbarzadeh, David P. Williamson, Hannane Yaghoubizade · 0 citations