Editor-in-Chief
Minds and Machines

Visiting Associate Professor
Department of Philosophy
Carnegie Mellon University
Pittsburgh, USA

Adjunct Research Scientist
Center for Adaptive Behavior and Cognition
Max Planck Institute for Human Development
Berlin, Germany

Rational Choice

Carnegie Mellon University
80-305
Fall 2012

This course will cover selected topics in rational choice theory, which informally is the analysis of how to make a correct decision in a given context. The course offers an introduction to the main normative theories of rational choice: von Neumann-Morgenstern theory of expected utility, Anscombe-Aumann's account and Savage's theory of choice under uncertainty. The course also includes an introduction to the main descriptive accounts of decision making used in Psychology and Economics. Possible topics may include, and are not limited to: a review of the main theories of non-expected utility and related issues in the psychology of judgment and decision making (especially recent advances extending Rank Dependent Utility and Prospect theory from risk to uncertainty), game-theoretic problems of conflict and coordination, the role of heuristics in choice behavior and strategic reasoning, as well as recent theories that abandon the Bayesian assumption that the decision maker's beliefs can always be represented by a unique probability distribution. This course will stress the role that formal methods can play in the analysis of decisions and alternative applications of decision theory to issues in philosophy and social science.

Modal Logic

Carnegie Mellon University
80-315 (80-615)
Fall 2012

This course is an introduction to first-order modal logic. After a thorough grounding in propositional normal modal logic, which covers rudimentary modal model theory (invariance results, the relationship between modal and first-order logic, the finite model property, and notions of modal model equivalence), soundness, completeness, and basic decidability results, several interpretations and applications of normal modal logics are considered. Modal languages are simple languages for talking about relational structures, with several applications appearing in philosophy, computer science, and linguistics. Some examples the course may touch upon include temporal and epistemic logics, multi-agent systems, finite parse trees, labeled transition systems, among others. In the last part of the course we will consider extensions of the Kripke models to interpret first-order modal languages, and close with the more general still Scott-Montague models of "classical" modal logic and extend those to first-order modal languages.

Logic & AI

Carnegie Mellon University
80-314
Spring 2013

An introduction to several formalisms used in knowledge representation and reasoning (KRR). The first half of the course covers the theoretical foundations of KRR: first-order logic, the principles for creating knowledge bases, propositional and first-order resolution, horn logics, description logics for reasoning about individuals and categories, inheritance, `non-monotonic' reasoning and defaults, principles of belief revision, representing and reasoning about actions, and planning. After this review, we will then look at a formalism for multiple epistemic agents and actions in some depth, and consider the trade-off between expressiveness and tractability. Finally, we shall introduce probabilistic methods for knowledge representation and reasoning under conditions of uncertainty.

The Nature of Mathematical Reasoning

Carnegie Mellon University
80-1010
Spring 2013

If asked to describe the study of mathematics, most people are likely to describe some specific mathematical theory – like calculus or algebra. In fact, the bulk of your mathematical upbringing was probably spent learning to perform different sorts of calculations according to different sorts of rules. But underneath the technical details lies the fascinating world of mathematical reasoning. In this course, our aim is to gain an understanding of contemporary mathematical reasoning and to see the simple elegance that abstract reasoning can bring to seemingly counter-intuitive problems. We will approach this project with the aid of examples found in the history and philosophy of mathematics, which will help us to better understand how the modern theory of mathematical reasoning has developed. In addition, we will consider several problems that seem to defy any intuitive solution, but which have compelling and in some cases simple solutions when put into mathematical form. These cases will highlight the value of approaching a problem in a carefully considered, mathematical manner.

My research addresses a range of issues in epistemology, broadly construed to include topics in philosophical logic and the philosophy of science, computational logic and artificial intelligence, normative and descriptive decision theory, imprecise probability theory, modal belief revision and, recently, formal models of heuristic rationality.

Recent highlights:

Articles

new:  "Is There a Logic of Information?" Journal of Experimental and Theoretical Artificial Intelligence, forthcoming.

2013:  "Coherence and Confirmation Through Causation" (with Richard Scheines), Mind, forthcoming.

2013: "Character Matching and the Locke Pocket of Belief," Epistemology, Context, and Formalism, Franck Lihoreau and Manuel Rebuschi (ed.), Dordrecht: The Synthese Library.

2013: "Models, Models, and Models," Metaphilosophy, 44(3): 293-300.

2012: "Objective Bayesian Calibration and the Problem of Non-convex Evidence," The British Journal for the Philosophy of Science, 63(4): 841-850.

2012:  "Belief Contraction Through Safe Formulas" (with Viktoriia Kozyreva), Proceedings of the 14th International Workshop on Computer Science and Information Technologies, (CSIT 2012), Hamburg - Ufa, Norwegian Fjords, 2012.

2012:  "Why the Hardest Logic Puzzle Ever Cannot be Solved in Less Than Three Questions" (with Pedro Barahona), Journal of Philosophical Logic, 41(2): 493-503.
Springer Link

2012: "Formal Epistemology," in The Continuum Companion to Epistemology, Andrew Cullison (ed.), New York: Continuum Press, pp. 227-47.

2012:  "Explaining the Limits of Olsson's Impossibility Result," The Southern Journal of Philosophy, 50(1): 136-50.

2012:  "Modeling of Phenomena and Dynamic Logic of Phenomena" (with Boris Kovalerchuk and Leonid Perlovsky), Journal of Applied Non-classical Logics, 22(1): 51-82.

2011:  "NO revision and NO contraction" (with Marco Alberti), Minds and Machines, 21(3): 411-30.
Springer Link

2011:  "Evidential Probability and Objective Bayesian Epistemology" (with Jon Williamson), in Prasanta Bandyopadhyay and Malcom Forster (eds.) Handbook of the Philosophy of Statistics, Oxford: Elsevier Press.
[Amazon UK]

2011:  "Focused Correlation, Confirmation, and the Jigsaw Puzzle of Variable Evidence" (with Maximilian Schlosshauer), Philosophy of Science, 78(3): 376-92.

2011:  “Causation, Association, and Confirmation" (with Richard Scheines), in Explanation, Prediction, and Confirmation, D. Dieks, W.J. Gonzalez, S. Hartmann, T. Uebel, M. Weber (eds.), The Philosophy of Science in a European Perspective Series, Dordrecht: Springer, pp. 37-51.
Springer Link

2011:  "Editorial," Minds and Machines, 21(1):1-2.
Springer Link

2010:  “Robustness of Evidential Probability" (with Choh Man Teng), The 16th International Conference on Logic for Programming, Artificial Intelligence, and Reasoning (LPAR-16), Short paper proceedings, Dakar, Senegal.

2010:  “AGM Belief Revision in Monotone Modal Logics," The 16th International Conference on Logic for Programming, Artificial Intelligence, and Reasoning (LPAR-16), Short paper proceedings, Dakar, Senegal.

2009:  "Focused Correlation and Confirmation,” The British Journal for the Philosophy of Science, 60(1): 79-100.

2009 :  "A Good Year for Imprecise Probabilities," in Vincent F. Hendricks (ed.) PHIBOOK, VIP / Automatic Press.

2009:  "Logical Relations in a Statistical Problem" (with Jan-Willem Romeijn, Rolf Haenni, and Jon Williamson), Foundations of the Formal Sciences, College Publications, London.

2009:  "Review of Formal Philosophy (Automatic Press, 2005)," Philosophy of Science, 76(1): 112-5.

2008:  "Methodological Naturalism and Epistemic Internalism" (with Luís Moniz Pereira), Synthese, 163(3): 315-328.

2008:  “Possible Semantics for a Common Framework for Probabilistic Logic” (with Rolf Haenni, Jan-Willem Romeijn, and Jon Williamson), in V. N. Huynh (ed.) (UncLog‘08) International Workshop on Interval Probabilistic Uncertainty and Non-Classical Logics, Ishikawa Japan, Advances in Soft Computing Series, 268-79.
Springer Link

2008:  "Applied Logic without Psychologism," Studia Logica, 88(1): 137-56.
SpringerLink

2007:  "Conditionals and Consequences" (with Henry Kyburg and Choh Man Teng), The Journal of Applied Logic, 5(4): 638-50.

2007:  "Two Puzzles Concerning Measures of Uncertainty and the Positive Boolean Connectives," 13th Portuguese Conference on Artificial Intelligence (EPIA 2007), Guimaraes, Portugal, LNAI Series, Berlin: Springer-Verlag, 170-80.
SpringerLink

2007:  "A Review of the Lottery Paradox," in William Harper and Gregory Wheeler (eds.) Probability and Inference: Essays in Honour of Henry E. Kyburg, Jr., London: College Publications, 1-31.

2007:  “Humanists and Scientists,” The Reasoner, 1(1):3-4.

2006:  "Rational Acceptance and Conjunctive/Disjunctive Absorption," Journal of Logic, Language and Information, 15(1-2): 49-63.
SpringerLink

2006:  Reprint of "On the Structure of Rational Acceptance," in Wiebe van der Hoek (ed.), Knowledge, Rationality and Action, Dordrecht: Springer, 117-34, 2006.

2005:  "On the Structure of Rational Acceptance: Comments on Hawthorne and Bovens," Synthese, 144(2): 287-304.
SpringerLink

2005:  “Review of Hans Rott's Change, Choice and Inference: A Study of Belief Revision and Nonmonotonic Reasoning (Oxford: Clarendon Press, 2001)," Philosophy of Science, 72(3): 498-503.

2005:  "The Paradoxes of Rational Acceptance and the Logic of Belief," in Lorenzo Magnani and Riccardo Dossena (eds.) Computing, Philosophy and Cognition, London: King's College Publications, 417-32.

2004:  "Epistemology and Artificial Intelligence" (with Luís Moniz Pereira), The Journal of Applied Logic, 2(4): 469-493.

2004:  "An Implementation of Statistical Default Logic" (with Carlos Damásio), in José Alferes and João Leite (eds.) Logics in Artificial Intelligence (JELIA 2004), LNCS Series, Berlin: Springer-Verlag, 121-33.
SpringerLink

2004:  "A Resource Bounded Default Logic," in James Delgrande and Torsten Schaub (eds.) Proceedings of the 10th International Workshop on Non-Monotonic Reasoning (NMR-04), Whistler, British Columbia, 416-22.
—— An abstract of “A Resource Bounded Default Logic," in The Bulletin of Symbolic Logic, 10(3): 444, 2004.

2003:  "A Note on Epistemology and Logical Artificial Intelligence," in Claudio Delrieux and Javier Legris (eds.) Proceedings of the Third International Workshop on Computational Models of Scientific Reasoning and Applications (CMSRA-III), Buenos Aires, Argentina, 207-22, 2003. (w/ Luís Moniz Pereira)
—— An expanded version appears in The Journal of Applied Logic, 2(4): 2004.

2002:  "Statistical Defaults and Paraconsistency," ESSLLI Workshop on Paraconsistent Logic, (ESSLLI 2002), Trento, Italy. CLE e-Prints, vol. 2(2), Campinas, Brazil. ISSN 1519-9681.

2002:  "Kinds of Inconsistency," in Walter A. Carnielli, Marcelo E. Coniglio, Italia Loffredo D'Ottaviano (eds.) Paraconsistency , New York: Marcel Dekker, 511-22.

2000:  "Error Statistics and Duhem's Problem," Philosophy of Science, 67(3): 410-20.

Monograph

2011:  Probabilistic Logics and Probabilistic Networks
Rolf Haenni, Jan-Willem Romeijn, Gregory Wheeler, and Jon Williamson.
The Synthese Library, Springer.
Available from Amazon: UK or US.
Springer Link
- Reviewed by Jan Sprenger in Metascience.

Edited Books

newHoracio: Commemorative Essays on Horacio Arló-Costa
Jeffrey Helzner, Arthur Paul Pedersen, Vincent F. Hendricks, and Gregory Wheeler (eds.), Automatic Press/VIP, forthcoming.

2013New Challenges to Philosophy of Science
Hanne Andersen, Dennis Dieks, Wenceslao González, Marcel Weber, and Gregory Wheeler (eds) The Philosophy of Science in a European Perspective Series, Dordrecht: Springer.
Available from Amazon: UK or US

2007:  Probability and Inference: Essays in Honour of Henry E. Kyburg, Jr.
William Harper and Gregory Wheeler, (eds.)
London: College Publications, 2007.
Available from Amazon: UK or US.

Special Journal Issues

2012: "Special issue Commemorating Henry E. Kyburg, Jr.," Synthese, volume 186, number 2. (co-edited w/ Horacio Arló-Costa)
Springer Link

2009:  “Special issue on Combining Probability and Logic”, The Journal of Applied Logic, volume 7, number 2. (w/ Fabio Cozman, Rolf Haenni, Jan-Willem Romeijn, and Jon Williamson.)

2007:  “Special issue on Formal and Computational Epistemology,” The Journal of Applied Logic, volume 5, number 4. (w/ Luís Moniz Pereira)

Recent Projects

Deutscher Akademischer Austausch Dienst / German Academic Exchange Service (DAAD): The Puzzle of Heuristic Rationality, with Konstantinos Katsikopoulos
The Max Planck Institute for Human Development, Berlin (2012).

European Science Foundation (ESF), LogiCCC Program: Dialogical Foundations of Semantics, (DiFoS), associate partner, (2009-2011).

European Science Foundation (ESF): Philosophy of Science in a European Perspective (PSE), formal methods group & steering committee, (2008-2013).

The Leverhulme Trust: Probabilistic Logics and Probabilistic Networks PROGICNET. co-PI, (2006-2008).

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