Aggregating Probabilistic Judgments
Pith reviewed 2026-05-24 18:28 UTC · model grok-4.3
The pith
Boolean judgment aggregation methods can be generalized to pool probabilistic judgments on logically related issues.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
We first modify the Boolean judgment aggregation framework in the way that allows handling probabilistic judgments and then define probabilistic aggregation functions obtained by generalization of the classical ones. In addition, we discuss essential desirable properties for the aggregation functions and explore impossibility results.
What carries the argument
The modified probabilistic judgment aggregation framework obtained by lifting the Boolean structure while preserving logical consistency on related issues.
If this is right
- Impossibility results known for Boolean judgment aggregation continue to hold after the generalization to probabilities.
- Desirable properties such as anonymity or neutrality can be verified for the new probabilistic aggregation functions.
- The generalized functions produce outputs that respect logical relations whenever the input judgments are consistent.
Where Pith is reading between the lines
- The approach supplies a systematic way to combine uncertain beliefs held by multiple agents in AI systems.
- Similar lifting techniques might apply to other non-classical logics beyond probabilities.
- Empirical tests on actual collections of probabilistic forecasts could show where the inherited properties succeed or break.
Load-bearing premise
The core structure and properties of Boolean judgment aggregation can be directly lifted to a probabilistic setting while preserving logical consistency on related issues.
What would settle it
A collection of probabilistic judgments on logically dependent propositions where every generalized aggregation function produces an output that violates the logical constraints between the issues.
read the original abstract
In this paper we explore the application of methods for classical judgment aggregation in pooling probabilistic opinions on logically related issues. For this reason, we first modify the Boolean judgment aggregation framework in the way that allows handling probabilistic judgments and then define probabilistic aggregation functions obtained by generalization of the classical ones. In addition, we discuss essential desirable properties for the aggregation functions and explore impossibility results.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript modifies the Boolean judgment aggregation framework to accommodate probabilistic judgments on logically related issues and defines probabilistic aggregation functions obtained by generalizing classical ones. It further discusses essential desirable properties of these functions and explores associated impossibility results.
Significance. If the generalizations preserve the intended logical consistency properties and the impossibility results are rigorously established, the work would provide a useful bridge between classical judgment aggregation and probabilistic opinion pooling. This could support applications in multi-agent AI systems and epistemic logic, with the impossibility results offering concrete limitations on what can be achieved under logical constraints.
minor comments (2)
- [Abstract] The abstract states that the Boolean framework is modified 'in the way that allows handling probabilistic judgments' but does not indicate the precise technical device (e.g., replacement of {0,1} valuations by [0,1] probabilities subject to coherence constraints) used in the modification step; a short clarifying sentence would improve readability.
- [Abstract] No concrete example of a probabilistic judgment profile or an explicit definition of a generalized aggregation function (e.g., a probabilistic majority or premise-based rule) appears in the abstract; including one brief illustrative case would help readers assess the generalization.
Simulated Author's Rebuttal
We thank the referee for the careful reading and positive assessment of our manuscript on adapting judgment aggregation to probabilistic opinions. The recommendation for minor revision is noted. No specific major comments were raised in the report, so we have no points requiring direct rebuttal or revision at this stage. We remain available to address any additional feedback.
Circularity Check
No significant circularity; direct theoretical generalization
full rationale
The paper frames its contribution as a modification of the Boolean judgment aggregation framework followed by generalization of classical aggregation functions to the probabilistic case, with discussion of properties and impossibility results. No equations, fitted quantities, or load-bearing self-citations appear in the provided abstract or description. The derivation is presented as a formal extension rather than any reduction of outputs to inputs by construction, making the work self-contained against external benchmarks.
Axiom & Free-Parameter Ledger
axioms (1)
- domain assumption Standard properties of Boolean judgment aggregation can be meaningfully extended to probabilistic judgments while preserving logical relations.
Reference graph
Works this paper leans on
- [1]
-
[2]
G. Boella, G. Pigozzi, M. Slavkovik & L. van der Torre (2011): Group Intention Is Social Choice with Commitment. In M. De V os, N. Fornara, J. Pitt & G. V ouros, editors: COIN in Agent Systems VI , LNCS 6541, Springer, Germany, pp. 152–171, doi:10.1007/978-3-642-21268-0 9
-
[3]
Bozbay (2019): Truth-tracking Judgment Aggregation over Interconnected Issues
I. Bozbay (2019): Truth-tracking Judgment Aggregation over Interconnected Issues . Social Choice and Welfare, pp. 1–34, doi:10.1007/s00355-019-01186-6
-
[4]
Bayesian Segmentation of Atrium Wall Using Globally-Optimal Graph Cuts on 3D Meshes
M.M. Deza & E. Deza (2009): Encyclopedia of Distances . Springer, Germany, doi:10.1007/978-3-642- 00234-2
-
[5]
Dietrich (2007): A Generalized Model of Judgment Aggregation
F. Dietrich (2007): A Generalized Model of Judgment Aggregation . Social Choice and Welfare 28(4), pp. 529–565, doi:10.1007/s00355-006-0187-y. M. Ivanovska & M. Slavkovik 291
-
[6]
Dietrich (2014): Scoring Rules for Judgment Aggregation
F. Dietrich (2014): Scoring Rules for Judgment Aggregation. Social Choice and Welfare42(4), pp. 873–911, doi:10.1007/s00355-013-0757-8
-
[7]
F. Dietrich & C. List (2010): The Aggregation of Propositional Attitudes: Towards a General Theory. Oxford Studies in Epistemology 3, pp. 215–234. Available at http://eprints.lse.ac.uk/id/eprint/31600
work page 2010
-
[8]
F. Dietrich & C. List (2017): Probabilistic Opinion Pooling Generalized. Part one: General Agendas. Social Choice and Welfare 48(4), pp. 747–786, doi:10.1007/s00355-017-1034-z
-
[9]
F. Dietrich & C. List (2018): From Degrees of Belief to Binary Beliefs: Lessons from Judgment-aggregation Theory. The Journal of Philosophy 115, pp. 225–270, doi:10.5840/jphil2018115516
-
[10]
F. Dietrich & P. Mongin (2010): The Premisse-Based Approach to Judgment Aggregation. Journal of Eco- nomic Theory 145(2), pp. 562–582, doi:10.1016/j.jet.2010.01.011
-
[11]
E. Dokow & R. Holzman (2010): Aggregation of Binary Evaluations with Abstentions. Journal of Economic Theory 145(2), pp. 544 – 561, doi:10.1016/j.jet.2009.10.015
-
[12]
Scalable Funding of Bitcoin Micropayment Channel Networks
D. Dubois & H. Prade (2001): Possibility Theory in Information Fusion . In G. Della Riccia, H.J. Lenz & R. Kruse, editors: Data Fusion and Perception , Springer Vienna, Vienna, pp. 53–76, doi:10.1007/978-3- 7091-2580-9 3
-
[13]
Endriss (2018): Judgment Aggregation with Rationality and Feasibility Constraints
U. Endriss (2018): Judgment Aggregation with Rationality and Feasibility Constraints. In: Proceedings of the 17th International Conference on Autonomous Agents and MultiAgent Systems, AAMAS ’18, International Foundation for Autonomous Agents and Multiagent Systems, Richland, SC, pp. 946–954. Available athttp: //dl.acm.org/citation.cfm?id=3237383.3237840
-
[14]
U. Endriss, U. Grandi, R. de Haan & J. Lang (2016): Succinctness of Languages for Judgment Aggregation. In: Proceedings of KR-2016, AAAI Press, USA, pp. 176–186. Available at http://www.aaai.org/ocs/ index.php/KR/KR16/paper/view/12851
work page 2016
-
[15]
U. Endriss & R. de Haan (2015): Complexity of the Winner Determination Problem in Judgment Aggre- gation: Kemeny, Slater, Tideman, Young . In: Proceedings of the 2015 International Conference on Au- tonomous Agents and Multiagent Systems, AAMAS ’15, International Foundation for Autonomous Agents and Multiagent Systems, Richland, SC, pp. 117–125. Available...
-
[16]
P. Everaere, S. Konieczny & P. Marquis (2014): Counting votes for aggregating judgments. In: International conference on Autonomous Agents and Multi-Agent Systems, AAMAS ’14, Paris, France, May 5-9, 2014 , pp. 1177–1184. Available at http://dl.acm.org/citation.cfm?id=2617436
work page 2014
-
[17]
P. Everaere, S. Konieczny & P. Marquis (2015): Belief Merging versus Judgment Aggregation. In: Proceed- ings of the AAMAS-2015, pp. 999–1007. Available athttp://dl.acm.org/citation.cfm?id=2773279
work page 2015
-
[18]
R. Fagin, J. Y . Halpern & N. Megiddo (1990): A Logic for Reasoning about Probabilities. Information and Computation 87, pp. 78–128, doi:10.1016/0890-5401(90)90060-U
-
[19]
D. Grossi & G. Pigozzi (2014): Judgment Aggregation: A Primer . Morgan and Claypool Publishers, San Rafael, CA, USA, doi:10.2200/S00559ED1V01Y201312AIM027
-
[20]
J. Y . Halpern (2005):Reasoning about uncertainty. MIT Press. Available athttps://mitpress.mit.edu/ books/reasoning-about-uncertainty-second-edition
work page 2005
-
[21]
M. Ivanovska & M. Giese (2010): Probabilistic Logic with Conditional Independence Formulae . In: Pro- ceedings of ECAI 2010 - 19th European Conference on Artificial Intelligence, pp. 983–984, doi:10.3233/978- 1-60750-606-5-983
-
[22]
Jøsang (2016): Subjective Logic: A Formalism for Reasoning Under Uncertainty
A. Jøsang (2016): Subjective Logic: A Formalism for Reasoning Under Uncertainty. Artificial Intelligence: Foundations, Theory, and Algorithms, Springer International Publishing, doi:10.1007/978-3-319-42337-1
-
[23]
J. Lang & M. Slavkovik (2013): Judgment Aggregation Rules and Voting Rules . In: Proceedings of the 3rd International Conference on Algorithmic Decision Theory, Lecture Notes in Artificial Intelligence 8176, Springer-Verlag, Germany, pp. 230–244, doi:10.1007/978-3-642-41575-318. 292 Aggregating Probabilistic Judgments
-
[24]
J. Lang & M. Slavkovik (2014): How Hard is it to Compute Majority-Preserving Judgment Aggregation Rules? In: Proceedings of ECAI-2014, Frontiers in Artificial Intelligence and Applications 263:ECAI 2014, IOS Press, Netherlands, pp. 501–506, doi:10.3233/978-1-61499-419-0-501
-
[25]
J. Lang, M. Slavkovik & S. Vesic (2016): Agenda Separability in Judgment Aggregation. In: Proceedings of the 30th AAAI Conference on Artificial Intelligence (AAAI-16) , pp. 1016–1022. Available at http: //www.aaai.org/ocs/index.php/AAAI/AAAI16/paper/view/12084
work page 2016
-
[26]
L. Lang, P. Pigozzi, M. Slavkovik, L. van der Torre & S. Vesic (2016): A partial taxonomy of judgment aggregation rules, and their properties. Social Choice and Welfare 48, pp. 1–30, doi:10.1007/s00355-016- 1006-8
-
[27]
Scale-Free Networks: Complex Webs in Nature and Technology
C. List & C. Puppe (2009): Judgment aggregation: A survey . In P. Anand, C. Puppe & P. Pattanaik, editors: The Handbook of Rational and Social Choice , Oxford University Press, UK, doi:10.1093/acprof:oso/9780199290420.003.0020
work page doi:10.1093/acprof:oso/9780199290420.003.0020 2009
-
[28]
Martini & J Sprenger (2017): Opinion Aggregation and Individual Expertise
C. Martini & J Sprenger (2017): Opinion Aggregation and Individual Expertise. In: Sci- entific Collaboration and Collective Knowledge: New Essays , Oxford Scholarship, UK, doi:10.1093/oso/9780190680534.001.0001
-
[29]
S. Moral & J. Del Sagrado (1998): Aggregation of Imprecise Probabilities. In: Aggregation and fusion of imperfect information, Springer, Germany, pp. 162–188, doi:10.1007/978-3-7908-1889-5 10
-
[30]
K. Nehring & M. Pivato (2013): Majority Rule in the Absence of a Majority. MPRA Paper 46721, University Library of Munich, Germany, doi:10.1016/j.jet.2019.05.006
-
[31]
G. Pigozzi, M. Slavkovik & L. van der Torre (2009): A Complete Conclusion-Based Procedure for Judgment Aggregation. In F. Rossi & A. Tsoukias, editors: Algorithmic Decision Theory, Lecture Notes in Computer Science 5783, Springer, Berlin Heidelberg, pp. 1–13, doi:10.1007/978-3-642-04428-1 1
-
[32]
N. Potyka, E. Acar, M. Thimm & H. Stuckenschmidt (2016): Group Decision Making via Probabilistic Belief Merging. In: Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence, IJCAI’16, AAAI Press, pp. 3623–3629. Available at http://dl.acm.org/citation.cfm?id=3061053. 3061126
work page 2016
-
[33]
N. Potyka & M. Thimm (2017): Inconsistency-tolerant Reasoning over Linear Probabilistic Knowledge Bases. International Journal of Approximate Reasoning 88, pp. 209 – 236, doi:10.1016/j.ijar.2017.06.002
-
[34]
Slavkovik (2012): Judgment Aggregation for Multiagent Systems
M. Slavkovik (2012): Judgment Aggregation for Multiagent Systems. Doctoral Thesis, University of Luxem- bourg, Uitgeverij BOXPress, Netherlands. Available at http://icr.uni.lu/Marija/thesis.pdf
work page 2012
-
[35]
M. Slavkovik & T. ˚Agotnes (2014): Measuring Dissimilarity between Judgment Sets . In: Logics in Artifi- cial Intelligence, Lecture Notes in Computer Science 8761, Springer International Publishing, pp. 609–617, doi:10.1007/978-3-319-11558-0 44
-
[36]
M. Slavkovik & G. Boella (2012): Recognition-primed group decisions via judgement aggregation. Synthese 189(1), pp. 51–65, doi:10.1007/s11229-012-0161-4
-
[37]
R. T. Stewart & I. O. Quintana (2018): Probabilistic Opinion Pooling with Imprecise Probabilities. Journal of Philosophical Logic 47(1), pp. 17–45, doi:10.1007/s10992-016-9415-9
-
[38]
Strzemecki (1992): Polynomial-time Algorithms for Generation of Prime Implicants
T. Strzemecki (1992): Polynomial-time Algorithms for Generation of Prime Implicants. Journal of Complex- ity 8(1), pp. 37 – 63, doi:10.1016/0885-064X(92)90033-8
-
[39]
Z. Terzopoulou, U. Endriss & R. de Haan (2018): Aggregating Incomplete Judgments: Axiomatisations for Scoring Rules. In: Proceedings of the COMSOC-2018, online. Available at http://research.illc.uva. nl/COMSOC/proceedings/comsoc-2018/TerzopoulouEtAlCOMSOC2018.pdf
work page 2018
-
[40]
Wagner (1984): Aggregating Subjective Probabilities: Some Limitative Theorems
C. Wagner (1984): Aggregating Subjective Probabilities: Some Limitative Theorems. Notre Dame Journal of Formal Logic 25, pp. 233–240, doi:10.1305/ndjfl/1093870630
work page doi:10.1305/ndj 1984
-
[41]
J. Wolfers & E. Zitzevitz (2004): Prediction Markets. Journal of Economic Perspectives 18(2), pp. 107–126, doi:10.1257/0895330041371321
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.