collaborators

9 papers

cs.AI2026

SkillShapley: Boundary-Adaptive Shapley Valuation for Skill Step Attribution in LLM Agents

Chang Liu, Yuqi Zhang, Yiman Zhong +3

Agent skills are crucial external instructions that enable language agents to execute long procedural tasks such as coding or document processing. Existing agent skills are primari…

cs.GT2026

Proportional Selection in Networks

Georgios Papasotiropoulos, Oskar Skibski, Piotr Skowron +1

We address the problem of selecting representative nodes from a network, aiming to achieve two objectives: identifying the most influential nodes and ensuring the selection pro…

cs.GT2026

Agreement, Diversity, and Polarization Indices for Approval Elections

Piotr Faliszewski, Jitka Mertlová, Krzysztof Sornat +2

An index is a function that given an election outputs a value between 0 and 1, indicating the extent to which this election has a particular feature. We seek indices that capture a…

cs.GT2026

Distances Between Top-Truncated Elections of Different Sizes

Piotr Faliszewski, Jitka Mertlová, Pierre Nunn +2

The map of elections framework is a methodology for visualizing and analyzing election datasets. So far, the framework was restricted to elections that have equal numbers of candid…

cs.GT2025

Diversity of Structured Domains via k-Kemeny Scores

Piotr Faliszewski, Krzysztof Sornat, Stanisław Szufa +1

In the k-Kemeny problem, we are given an ordinal election, i.e., a collection of votes ranking the candidates from best to worst, and we seek the smallest number of swaps of adjace…

cs.GT2025

Method of Equal Shares with Bounded Overspending

Georgios Papasotiropoulos, Seyedeh Zeinab Pishbin, Oskar Skibski +2

In participatory budgeting (PB), voters decide through voting which subset of projects to fund within a given budget. Proportionality in the context of PB is crucial to ensure equa…