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UID:/NewsandEvents/Events/Upcoming-Events/newsitem
 /16151/19-May-2026-Computational-Social-Choice-Sem
 inar-Tomasz-Wąs
DTSTAMP:20260415T170132
SUMMARY:Computational Social Choice Seminar, Tomas
 z Wąs
ATTENDEE;ROLE=Speaker:Tomasz Wąs
DTSTART;TZID=Europe/Amsterdam:20260519T160000
LOCATION:Room L1.08, LAB42, Science Park 900, Amst
 erdam
DESCRIPTION:Abstract  An index is a function that,
  given an election, outputs a value between 0 and 
 1, indicating the extent to which this election ha
 s a particular feature. We seek indices that captu
 re agreement, diversity, and polarization among vo
 ters in approval elections, and that are normalize
 d with respect to saturation. By the latter we mea
 n that if two elections differ by the fraction of 
 candidates approved by an average voter, but other
 wise are of similar nature, then they should have 
 similar index values. We propose several indices, 
 analyze their properties, and use them to (a) deri
 ve a new map of approval elections, and (b) show s
 imilarities and differences between various real-l
 ife elections (including those from Pabulib, Prefl
 ib and other sources). This is joint work with Pio
 tr Faliszewski, Jitka Mertlová, Krzysztof Sornat, 
 and Stanisław Szufa.  For more information visit t
 he Computational Social Choice Seminar website.
X-ALT-DESC;FMTTYPE=text/html:\n  <p><strong>Abstra
 ct</strong></p>\n  <p>An index is a function that,
  given an election, outputs a value between 0 and 
 1, indicating the extent to which this election ha
 s a particular feature. We seek indices that captu
 re agreement, diversity, and polarization among vo
 ters in approval elections, and that are normalize
 d with respect to saturation. By the latter we mea
 n that if two elections differ by the fraction of 
 candidates approved by an average voter, but other
 wise are of similar nature, then they should have 
 similar index values. We propose several indices, 
 analyze their properties, and use them to (a) deri
 ve a new map of approval elections, and (b) show s
 imilarities and differences between various real-l
 ife elections (including those from Pabulib, Prefl
 ib and other sources). This is joint work with Pio
 tr Faliszewski, Jitka Mertlová, Krzysztof Sornat, 
 and Stanisław Szufa.</p>\n  <p>For more informatio
 n visit the <a href="https://staff.science.uva.nl/
 u.endriss/seminar/" target="_blank" rel="noopener"
 >Computational Social Choice Seminar website</a>.<
 /p>\n
URL:https://staff.science.uva.nl/u.endriss/seminar
 /
CONTACT:Ulle Endriss at ulle.endriss at uva.nl
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