Search Results for author: Andre Beckus

Found 8 papers, 0 papers with code

On the Robustness of AlphaFold: A COVID-19 Case Study

no code implementations10 Jan 2023 Ismail Alkhouri, Sumit Jha, Andre Beckus, George Atia, Alvaro Velasquez, Rickard Ewetz, Arvind Ramanathan, Susmit Jha

To measure the robustness of the predicted structures, we utilize (i) the root-mean-square deviation (RMSD) and (ii) the Global Distance Test (GDT) similarity measure between the predicted structure of the original sequence and the structure of its adversarially perturbed version.

Protein Folding

Inferring Probabilistic Reward Machines from Non-Markovian Reward Processes for Reinforcement Learning

no code implementations9 Jul 2021 Taylor Dohmen, Noah Topper, George Atia, Andre Beckus, Ashutosh Trivedi, Alvaro Velasquez

The success of reinforcement learning in typical settings is predicated on Markovian assumptions on the reward signal by which an agent learns optimal policies.

Decision Making reinforcement-learning +1

Controller Synthesis for Omega-Regular and Steady-State Specifications

no code implementations5 Jun 2021 Alvaro Velasquez, Ismail Alkhouri, Andre Beckus, Ashutosh Trivedi, George Atia

Given a Markov decision process (MDP) and a linear-time ($\omega$-regular or LTL) specification, the controller synthesis problem aims to compute the optimal policy that satisfies the specification.

Steady-State Planning in Expected Reward Multichain MDPs

no code implementations3 Dec 2020 George K. Atia, Andre Beckus, Ismail Alkhouri, Alvaro Velasquez

In this paper, we explore this steady-state planning problem that consists of deriving a decision-making policy for an agent such that constraints on its steady-state behavior are satisfied.

Decision Making

Sketch-based community detection in evolving networks

no code implementations24 Sep 2020 Andre Beckus, George K. Atia

We present a new standardized benchmark based on the stochastic block model which models the addition and deletion of nodes, as well as the birth and death of communities.

Community Detection Stochastic Block Model

Multi-modal Non-line-of-sight Passive Imaging

no code implementations6 Jul 2018 Andre Beckus, Alexandru Tamasan, George K. Atia

The wall scatters incident light such that a lens is no longer useful to form an image.

Object

Scalable and Robust Community Detection with Randomized Sketching

no code implementations25 May 2018 Mostafa Rahmani, Andre Beckus, Adel Karimian, George Atia

Uniform random node sampling is shown to improve the computational complexity over clustering of the full graph when the cluster sizes are balanced.

Clustering Community Detection +3

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