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UID:/NewsandEvents/Archives/2025/newsitem/15905/5-
 December-2025-Computational-Social-Choice-Seminar-
 Federico-Fioravanti
DTSTAMP:20251111T110835
SUMMARY:Computational Social Choice Seminar, Feder
 ico Fioravanti
ATTENDEE;ROLE=Speaker:Federico Fioravanti (Saint-E
 tienne)
DTSTART;TZID=Europe/Amsterdam:20251205T150000
LOCATION:Room L2.07, Lab42, Science Park 900, Amst
 erdam
DESCRIPTION:Abstract  We consider the aggregation 
 problem where a collective decision is based on bi
 nary evaluations of several issues. An expert is a
 n agent who is decisive over an issue, and an aggr
 egator is Pareto if it respects unanimous valuatio
 ns over an issue. We study the required conditions
  for a domain to admit Pareto aggregators with at 
 least two experts. We show that several impossibil
 ity results from the literature can be derived fro
 m our model, while establishing new results for se
 ttings such as the single-peaked domain and approv
 al-based committee voting.
X-ALT-DESC;FMTTYPE=text/html:\n  <p><strong>Abstra
 ct</strong></p>\n  <p>We consider the aggregation 
 problem where a collective decision is based on bi
 nary evaluations of several issues. An expert is a
 n agent who is decisive over an issue, and an aggr
 egator is Pareto if it respects unanimous valuatio
 ns over an issue. We study the required conditions
  for a domain to admit Pareto aggregators with at 
 least two experts. We show that several impossibil
 ity results from the literature can be derived fro
 m our model, while establishing new results for se
 ttings such as the single-peaked domain and approv
 al-based committee voting.</p>\n
URL:https://staff.science.uva.nl/u.endriss/seminar
 /
CONTACT:Ulle Endriss at u.endriss at uva.nl
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