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- Conal Duddy, Ashley Piggins
- Social Choice and Welfare
- 2012

In the literature on judgment aggregation, an important open question is how to measure the distance between any two judgment sets. This is relevant for issues of social choice: if two individuals hold different beliefs then we might want to find a compromise that lies somewhere between them. We propose a set of axioms that determine a measure of distance… (More)

- Conal Duddy
- Mathematical Social Sciences
- 2015

A general model of judgment aggregation is presented in which judgments on propositions are not binary but come in degrees. The primitives of the model are a set of propositions, an entailment relation, and a “triangular norm” which establishes a lower bound on the degree to which a proposition is true whenever it is entailed by a set of propositions. For… (More)

- Conal Duddy, Ashley Piggins
- Mathematical Social Sciences
- 2013

- Conal Duddy, Ashley Piggins, William S. Zwicker
- Social Choice and Welfare
- 2016

We characterize a rule for aggregating binary evaluations – equivalently, dichotomous weak orders – similar in spirit to the Borda rule from the preference aggregation literature. The binary evaluation framework was introduced as a general approach to aggregation by Wilson (J. Econ. Theory 10 (1975) 63-77). In this setting we characterize the “mean rule,”… (More)

- Conal Duddy, Ashley Piggins
- J. Economic Theory
- 2013

A general model of judgment aggregation is presented in which judgments on propositions are not binary but come in degrees. The primitives of the model are a set of propositions, an entailment relation, and a “triangular norm” which establishes a lower bound on the degree to which a proposition is true whenever it is entailed by a set of propositions. Under… (More)

- Conal Duddy, Juan Perote-Peña, Ashley Piggins
- Social Choice and Welfare
- 2011

- Conal Duddy
- 2017

We consider two no-show paradoxes, in which a voter obtains a preferable outcome by abstaining from a vote. One arises when the casting of a ballot that ranks a candidate in first place causes that candidate to lose the election. The other arises when a ballot that ranks a candidate in last place causes that candidate to win. We show that when there are at… (More)

- Conal Duddy, Ashley Piggins
- Social Choice and Welfare
- 2012

- Conal Duddy, Juan Perote-Peña, Ashley Piggins
- Social Choice and Welfare
- 2010