Donald G. Saari

Basic Geometry of Voting (eBook, PDF)

• Format: PDF

Produktbeschreibung

Amazingly, the complexities of voting theory can be explained and resolved with comfortable geometry. A geometry which unifies such seemingly disparate topics as manipulation, monotonicity, and even the apportionment issues of the US Supreme Court. Although directed mainly toward students and others wishing to learn about voting, experts will discover here many previously unpublished results. As an example, a new profile decomposition quickly resolves the age-old controversies of Condorcet and Borda, demonstrates that the rankings of pairwise and other methods differ because they rely on different information, casts serious doubt on the reliability of a Condorcet winner as a standard for the field, makes the famous Arrow's Theorem predictable, and simplifies the construction of examples.

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Produktdetails

• Verlag: Springer Berlin Heidelberg
• Seitenzahl: 300
• Erscheinungstermin: 6. Dezember 2012
• Englisch
• ISBN-13: 9783642577482
• Artikelnr.: 53151417

Inhaltsangabe

I. From an Election Fable to Election Procedures.- 1.1 An Electoral Fable.- 1.2 The Moral of the Tale.- 1.3 From Aristotle to "Fast Eddie".- 1.4 What Kind of Geometry?.- II. Geometry for Positional And Pairwise Voting.- 2.1 Ranking Regions.- 2.2 Profiles and Election Mappings.- III. The Problem With Condorcet.- 3.1 Why Can't an Organization Be More Like a Person?.- 3.2 Geometry of Pairwise Voting.- 3.3 Black's Single-Peakedness.- 3.4 Arrow's Theorem.- IV. Positional Voting And the BC.- 4.1 Positional Voting Methods.- 4.2 What a Difference a Procedure Makes; Several Different Outcomes.- 4.3 Positional Versus Pairwise Voting.- 4.4 Profile Decomposition.- 4.5 From Aggregating Pairwise Votes to the Borda Count.- 4.6 The Other Positional Voting Methods.- 4.7 Multiple Voting Schemes.- 4.8 Other Election Procedures.- V. Other Voting Issues.- 5.1 Weak Consistency: The Sum of the Parts.- 5.2 From Involvement and Monotonicity to Manipulation.- 5.3 Gibbard-Satterthwaite and Manipulable Procedures.- 5.4 Proportional Representation.- 5.5 House Monotone Methods.- VI. Notes.- VII. References.