Search Results for author: Marcus Hoerger

Found 5 papers, 4 papers with code

A Surprisingly Simple Continuous-Action POMDP Solver: Lazy Cross-Entropy Search Over Policy Trees

1 code implementation14 May 2023 Marcus Hoerger, Hanna Kurniawati, Dirk Kroese, Nan Ye

At each planning step, our method uses a novel lazy Cross-Entropy method to search the space of policy trees, which provide a simple policy representation.

Decision Making

A Flow-Based Generative Model for Rare-Event Simulation

1 code implementation13 May 2023 Lachlan Gibson, Marcus Hoerger, Dirk Kroese

Solving decision problems in complex, stochastic environments is often achieved by estimating the expected outcome of decisions via Monte Carlo sampling.

Decision Making

Adaptive Discretization using Voronoi Trees for Continuous POMDPs

1 code implementation21 Feb 2023 Marcus Hoerger, Hanna Kurniawati, Dirk Kroese, Nan Ye

ADVT uses the estimated diameters of the cells to form an upper-confidence bound on the action value function within the cell, guiding the Monte Carlo Tree Search expansion and further discretization of the action space.

Adaptive Discretization using Voronoi Trees for Continuous-Action POMDPs

1 code implementation13 Sep 2022 Marcus Hoerger, Hanna Kurniawati, Dirk Kroese, Nan Ye

A Voronoi tree is a Binary Space Partitioning (BSP) that implicitly maintains the partition of a cell as the Voronoi diagram of two points sampled from the cell.

An On-Line POMDP Solver for Continuous Observation Spaces

no code implementations4 Nov 2020 Marcus Hoerger, Hanna Kurniawati

Most on-line solvers rely on discretising the observation space or artificially limiting the number of observations that are considered during planning to compute tractable policies.

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