Arthur Paul Pedersen  
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(RESEARCH) SEMINAR


Logic, Games and Language  CUNY Graduate Center


Rohit Parikh (chair),
Arthur Paul Pedersen


December 13, 2019 16:15  18:00, Room 4421  
Glenn Shafer (Rutgers): "Using Game Theory to Reunify Subjective and Objective Probability.” Abstract. Belief and frequency coexisted in the calculus of games of chance as it was taught in Europe beginning in the 13th century. They still coexisted in the theory of mathematical probability that Jacob Bernoulli based on that calculus. But they came apart in the middle of the 19th century. In this talk, I show how game theory can bring them back together. My new book with Volodya Vovk (GameTheoretic Foundations for Probability and Finance, Wiley, May 2019) bases mathematical probability on a game with three players: Forecaster (who offers bets), Skeptic (who decides which offers to take), and Reality (who decides the outcomes). Forecaster is the Bayesian. Skeptic is the frequentist. See the working papers at www.probabilityandfinance.com. 

November 22, 2019 16:15  18:00, Room 4421  
"The Permissible and the Forbidden" (Richter, Rubinstein), November 2019. 

November 15, 2019 16:15  18:00, Room 4421  
"Formal Approaches to Social Procedures" (van Eijck, Verbrugge), Winter 2019. cf. "Formal Approaches to Social Procedures," Spring 2017. 

November 1, 2019 16:15  18:15, Room 4421  
Adam Elga (Princeton): "Causal Decision Theory does not Exist.”
Abstract.
The box is either empty or contains $1 million (you can't see which). You will either receive (1) just the contents of the box, or (2) the contents of the box plus an extra $1,000. You get to choose (1) or (2). The catch is that a reliable predictor put the $1 million in the box if and only if he predicted you would refuse the extra $1,000. Should you take the $1,000?


October 18, 2019 16:15  18:15, Room 4421  
Arthur Paul Pedersen (The City University of New York): "Bayesian Aggregation under Severe Uncertainty and Unresolved Conflict.”
Abstract.
This is the second part of a twopart talk treating the problem of aggregating judgments of a group of individuals.


October 11, 2019 16:15  18:15, Room 4421  
Arthur Paul Pedersen (The City University of New York): "Bayesian Aggregation under Severe Uncertainty and Unresolved Conflict.” Abstract.
I'll examine the problem of aggregating judgments of a group of individuals. What criteria are to serve as normative standards for reaching Bayesian consensus? This talk has two parts. As background, for the first of this talk I'll discuss (i) external Bayesianism and other proposed normative criteria (with regard to, e.g., update then aggregate vs. aggregate then update) and (ii) Bayesian extensions of Arrowlike impossibility theorems and their counterpart possibility theorems. Do the purported normative standards extend to conditions of severe uncertainty or unresolved conflict? Do normative standards appropriate to common conditions such as these avoid Arrowlike impossibility theorems?


October 4, 2019 16:15  18:15, Room 4421  
Jia Xu (Hunter College): "New Directions in Neural Machine Translation.” 

September 27, 2019 16:15  18:15, Room 4421  
Ignacio Ojea Quintana: "Segregating and Integrating Dynamics in Social Networks.” 

September 20, 2019 16:15  18:15, Room 4421  
Arthur Paul Pedersen (The City University of New York): "Amartya Sen: Welfare Aggregation and Measurability.” 

September 13, 2019 16:15  18:15, Room 4421  
Ron van der Meyden (University of New South Wales): "Social Software on the Blockchain.”


August 23, 2019 16:00  18:00, Room 4421  
"Social Choice Theory" (List), Winter 2013. 

August 16, 2019 16:00  18:00, Room 4421  
Eric Pacuit (University of Maryland): "Voting Methods." "Voting Methods" (Pacuit), Fall 2019. cf. "Voting Methods" (Pacuit), Fall 2017. Arthur Paul Pedersen (The City University of New York): "Arrow's Impossibility Theorem." "Arrow's Theorem" (Morreau), Winter 2016.


August 9, 2019
16:00  18:00, Room 4421
"Voting" (Easley, Kleinberg).


August 2, 2019
16:00  18:00, Room 4421
"The Power Of Knowledge in Games" (Parikh, Tasdemir, Witzel). "Cheap Talk" (Farrell, Rabin). "The Use of Knowledge in Society" (Hajek).


July 26, 2019
16:00  18:00, Room 4421
"The Logic of NonPersons" (Parikh). 