Aldo Tragni invented the Tragni's method (and variants), Distributed Voting System (DV), Distributed 2-Voting (D2V) and the Distributed Multi-Voting (DMV).
- Tragni's method: currently the most supported by him for single-winners contexts.
- Distributed Voting System: currently the most supported by him for multi-winners contexts.
He defined the Symbolic voting systems, Independence of least/most preferred, Honesty criterion and IWA.
He has made this site (beta version) where it's possible to create surveys that use Distributed Voting with range [0,9] for single and multi-winners.
He also contributed to some voting systems, creating the following diagrams that explain the procedure in a simple way:
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Other diagrams:
