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arXiv · 2505.13914

Parallel Belief Revision via Order Aggregation

Jake Chandler·Richard Booth
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Abstract

Despite efforts to better understand the constraints that operate on single-step parallel (aka "package", "multiple") revision, very little work has been carried out on how to extend the model to the iterated case. A recent paper by Delgrande & Jin outlines a range of relevant rationality postulates. While many of these are plausible, they lack an underlying unifying explanation. We draw on recent work on iterated parallel contraction to offer a general method for extending serial iterated belief revision operators to handle parallel change. This method, based on a family of order aggregators known as TeamQueue aggregators, provides a principled way to recover the independently plausible properties that can be found in the literature, without yielding the more dubious ones.

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Jake Chandler, Richard Booth. 2025-05-20. Parallel Belief Revision via Order Aggregation. https://arxiv.org/abs/2505.13914

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