2018
IJCAI
IJCAI 2018
Approval-Based Multi-Winner Rules and Strategic Voting
Abstract
We investigate the possibility of strategic voting in approval-based multiwinner rules. In particular, we define three axiomatic properties that guarantee resilience to certain forms of strategic voting: independence of irrelevant alternatives (IIA), monotonicity, and SD-strategyproofness. In this paper, we systematically analyze multiwinner rules based on these axioms and provide a fine-grained picture of their resilience to strategic voting. Both our axiomatic and experimental analysis show that approval-based multiwinner rules are generally very susceptible to strategic voting---with one exception: multiwinner approval voting.
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Keyword Pioneer
— independence of irrelevant alternative
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Cross-Pollinator
— Artificial Intelligence, Computer Science, Data Science & Analytics, Deep Learning, Interdisciplinary, Knowledge & Reasoning, Machine Learning, Mathematics & Optimization, Natural Language Processing, Reinforcement Learning