Krzysztof Sornat
13 papers · 2019–2026 · 2 venues · across top CS/AI venues
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Achievements
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🌍 Conference Polyglot · Bronze 🌉 Interdisciplinary Bridge · Silver 🗺️ Taxonomy Completionist (13) 🏃 Academic Marathon · Sprint 💎 Century Club · Bronze
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Keyword Collector
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Unstoppable · Bronze
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The Questioner
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Research topics
Keywords
computational complexity
(6)
approximation algorithm
(4)
approval voting
(3)
participatory budgeting
(3)
combinatorial optimization
(3)
multiwinner voting
(2)
thiele rule
(2)
voting rule
(2)
ordinal election
(2)
resource allocation
(1)
similarity measure
(1)
approximation scheme
(1)
voting theory
(1)
linear programming
(1)
preference aggregation
(1)
ranking aggregation
(1)
fixed-parameter tractability
(1)
positional scoring rule
(1)
proportional approval voting
(1)
social choice
(1)
Papers
Algorithms for Structured Elections Under Thiele Voting Rules
AAAI 2026
Diversity of Structured Domains via k-Kemeny Scores
AAAI 2026
Participatory Budgeting Project Strength via Candidate Control
IJCAI 2025
Aggregation of Continuous Preferences in One Dimension
IJCAI 2024
An Experimental Comparison of Multiwinner Voting Rules on Approval Elections
IJCAI 2023
Diversity, Agreement, and Polarization in Elections
IJCAI 2023
How to Sample Approval Elections?
IJCAI 2022
Near-Tight Algorithms for the Chamberlin-Courant and Thiele Voting Rules
IJCAI 2022
The Complexity of Subelection Isomorphism Problems
AAAI 2022
Participatory Budgeting with Project Groups
IJCAI 2021
Participatory Budgeting with Project Interactions
IJCAI 2020
Tight Approximation for Proportional Approval Voting
IJCAI 2020
Approximation and Hardness of Shift-Bribery
AAAI 2019