Search Results for author: Andrey Zhitnikov

Found 7 papers, 0 papers with code

No Compromise in Solution Quality: Speeding Up Belief-dependent Continuous POMDPs via Adaptive Multilevel Simplification

no code implementations16 Oct 2023 Andrey Zhitnikov, Ori Sztyglic, Vadim Indelman

Using the general theoretical results, we present three algorithms to accelerate continuous POMDP online planning with belief-dependent rewards.

Simplified Continuous High Dimensional Belief Space Planning with Adaptive Probabilistic Belief-dependent Constraints

no code implementations13 Feb 2023 Andrey Zhitnikov, Vadim Indelman

Moreover, using our proposed framework, we contribute an adaptive method to find a maximal feasible return (e. g., information gain) in terms of Value at Risk for the candidate action sequence with substantial acceleration.

Decision Making Decision Making Under Uncertainty

Risk Aware Adaptive Belief-dependent Probabilistically Constrained Continuous POMDP Planning

no code implementations6 Sep 2022 Andrey Zhitnikov, Vadim Indelman

In addition, with an arbitrary confidence parameter, we did not find any analogs to our approach.

Simplified Belief-Dependent Reward MCTS Planning with Guaranteed Tree Consistency

no code implementations29 May 2021 Ori Sztyglic, Andrey Zhitnikov, Vadim Indelman

In particular, we present Simplified Information-Theoretic Particle Filter Tree (SITH-PFT), a novel variant to the MCTS algorithm that considers information-theoretic rewards but avoids the need to calculate them completely.

Probabilistic Loss and its Online Characterization for Simplified Decision Making Under Uncertainty

no code implementations12 May 2021 Andrey Zhitnikov, Vadim Indelman

On top of this extension, our key contribution is a novel framework to simplify decision making while assessing and controlling online the simplification's impact.

Decision Making Decision Making Under Uncertainty

Topology of deep neural networks

no code implementations13 Apr 2020 Gregory Naitzat, Andrey Zhitnikov, Lek-Heng Lim

We study how the topology of a data set $M = M_a \cup M_b \subseteq \mathbb{R}^d$, representing two classes $a$ and $b$ in a binary classification problem, changes as it passes through the layers of a well-trained neural network, i. e., with perfect accuracy on training set and near-zero generalization error ($\approx 0. 01\%$).

Binary Classification

Revealing Common Statistical Behaviors in Heterogeneous Populations

no code implementations ICML 2018 Andrey Zhitnikov, Rotem Mulayoff, Tomer Michaeli

In many areas of neuroscience and biological data analysis, it is desired to reveal common patterns among a group of subjects.

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