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The DOI matches its OpenAlex record; 28 of the 28 references it cites were found in a registry or an index.

Point-Based Value Iteration for Continuous POMDPs

Open access
Josep Maria Porta, Nikos A. Vlassis, Matthijs T. J. Spaan, Pascal Poupart·2006·DIGITAL.CSIC (Spanish National Research Council (CSIC))

Abstract

We propose a novel approach to optimize Partially Observable Markov Decisions Processes (POMDPs) defined on continuous spaces. To date, most algorithms for model-based POMDPs are restricted to discrete states, actions, and observations, but many real-world problems such as, for instance, robot navigation, are naturally defined on continuous spaces. In this work, we demonstrate that the value function for continuous POMDPs is convex in the beliefs over continuous state spaces, and piecewise-linear convex for the particular case of discrete observations and actions but still continuous states. We also demonstrate that continuous Bellman backups are contracting and isotonic ensuring the monotonic convergence of value-iteration algorithms. Relying on those properties, we extend the PERSEUS algorithm, originally developed for discrete POMDPs, to work in continuous state spaces by representing the observation, transition, and reward models using Gaussian mixtures, and the beliefs using Gaussian mixtures or particle sets. With these representations, the integrals that appear in the Bellman backup can be computed in closed form and, therefore, the algorithm is computationally feasible. Finally, we further extend PERSEUS to deal with continuous action and observation sets by designing effective sampling approaches.

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Metadata

Authors
Porta, J. M., Vlassis, N. A., Spaan, M. T. J., & Poupart, P.
Venue
DIGITAL.CSIC (Spanish National Research Council (CSIC))
Publisher
Consejo Superior de Investigaciones Científicas
Published
2006-12-01
Volume
7
Issue
83
Pages
2329-2367
OpenAlex
W2144088174
Cited by
234
References
28
FWCI
10.33
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Point-Based Value Iteration for Continuous POMDPs. https://app.cochat.ai/papers/10.13039/501100000780
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Porta, J. M., Vlassis, N. A., Spaan, M. T. J., & Poupart, P. (2006). Point-Based Value Iteration for Continuous POMDPs. DIGITAL.CSIC (Spanish National Research Council (CSIC)). https://doi.org/10.13039/501100000780

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.