Aldo Tragni
Joined 29 January 2020
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Aldo Tragni invented the following systems:
* [[Distributed Voting#Seats_allocation|Distributed Voting]] (DV): currently the most supported by him for [[Single Member Districts|single-winner]] and [[Multi-Member Districts|multi-winners system]], with [[PRO-V#Proportional_vote_philosophy|proportional ratings]].
* [[FAIR-V|FAIR-Max]]: currently the most supported by him for [[Single Member Districts|single-winner system]], with approval ratings.
* [[Proportional Subset Voting|PSV]]: currently the most supported by him for [[Multi-Member Districts|multi-winners system]], with approval ratings.
* [[PRO-V]]
* [[WIRV]]
* [[Tragni's method]] (and variants)
* [[Distributed 2-Voting]] (D2V)
* [[Distributed Multi-Voting]] (DMV)
He defined:
He defined the [[Honesty criterion]] and [[Independence of Worst Alternatives|IWA]].▼
* [[Symbolic voting systems]]
* [[PRO-V#Proportional_vote_philosophy|Proportional vote philosophy]]
* [[Honesty criterion]]
* [[Independence of the least/most preferred|Independence of least/most preferred]]
* [https://forum.electionscience.org/t/normalizations-list/822 MV Norm]
* [https://forum.electionscience.org/t/normalizations-list/822 nV Norm]
* [[FAIR-V#mdM_norm_.28min-do-Max_norm.29|mdM norm, Mdm norm, mM-do-Mm norm]]
He has made:
* [http://distributedvote.altervista.org/proResult/home.html This page] in which it's possible to insert ballots and view the single-winner with some voting systems.
* [http://distributedvote.altervista.org/scatterPlotMat/home.html This page] in which it's possible to insert ballots and understand how two candidates are considered similar by voters.
He also contributed to some voting systems, creating the following diagrams that explain the procedure in a simple way:
*[https://electowiki.org/wiki/File:D2V_procedure.svg D2V Procedure]▼
*[https://electowiki.org/wiki/File:DV_Procedure.svg DV Procedure]
▲*[https://electowiki.org/wiki/File:D2V_procedure.svg D2V Procedure]
*[https://electowiki.org/wiki/File:
*[https://electowiki.org/wiki/File:RRV_Procedure.svg RRV Procedure]
*[https://electowiki.org/wiki/File:SDV_Procedure.svg SDV Procedure]
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*[https://electowiki.org/wiki/File:Digital_ballot_DV.gif DV digital ballot]
▲*[https://electowiki.org/wiki/File:DV_paper_ballot.svg DV paper ballot]
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