Search Results for author: Arpan Biswas

Found 6 papers, 4 papers with code

Towards accelerating physical discovery via non-interactive and interactive multi-fidelity Bayesian Optimization: Current challenges and future opportunities

1 code implementation20 Feb 2024 Arpan Biswas, Sai Mani Prudhvi Valleti, Rama Vasudevan, Maxim Ziatdinov, Sergei V. Kalinin

Both computational and experimental material discovery bring forth the challenge of exploring multidimensional and often non-differentiable parameter spaces, such as phase diagrams of Hamiltonians with multiple interactions, composition spaces of combinatorial libraries, processing spaces, and molecular embedding spaces.

Active Learning Bayesian Optimization

Human-in-the-loop: The future of Machine Learning in Automated Electron Microscopy

no code implementations8 Oct 2023 Sergei V. Kalinin, Yongtao Liu, Arpan Biswas, Gerd Duscher, Utkarsh Pratiush, Kevin Roccapriore, Maxim Ziatdinov, Rama Vasudevan

Machine learning methods are progressively gaining acceptance in the electron microscopy community for de-noising, semantic segmentation, and dimensionality reduction of data post-acquisition.

Decision Making Dimensionality Reduction +2

A dynamic Bayesian optimized active recommender system for curiosity-driven Human-in-the-loop automated experiments

1 code implementation5 Apr 2023 Arpan Biswas, Yongtao Liu, Nicole Creange, Yu-Chen Liu, Stephen Jesse, Jan-Chi Yang, Sergei V. Kalinin, Maxim A. Ziatdinov, Rama K. Vasudevan

Optimization of experimental materials synthesis and characterization through active learning methods has been growing over the last decade, with examples ranging from measurements of diffraction on combinatorial alloys at synchrotrons, to searches through chemical space with automated synthesis robots for perovskites.

Active Learning Recommendation Systems

Combining Variational Autoencoders and Physical Bias for Improved Microscopy Data Analysis

1 code implementation8 Feb 2023 Arpan Biswas, Maxim Ziatdinov, Sergei V. Kalinin

Electron and scanning probe microscopy produce vast amounts of data in the form of images or hyperspectral data, such as EELS or 4D STEM, that contain information on a wide range of structural, physical, and chemical properties of materials.

Optimizing Training Trajectories in Variational Autoencoders via Latent Bayesian Optimization Approach

2 code implementations30 Jun 2022 Arpan Biswas, Rama Vasudevan, Maxim Ziatdinov, Sergei V. Kalinin

Unsupervised and semi-supervised ML methods such as variational autoencoders (VAE) have become widely adopted across multiple areas of physics, chemistry, and materials sciences due to their capability in disentangling representations and ability to find latent manifolds for classification and regression of complex experimental data.

Bayesian Optimization

A Nested Weighted Tchebycheff Multi-Objective Bayesian Optimization Approach for Flexibility of Unknown Utopia Estimation in Expensive Black-box Design Problems

no code implementations16 Oct 2021 Arpan Biswas, Claudio Fuentes, Christopher Hoyle

We propose a nested weighted Tchebycheff Multi-objective Bayesian optimization framework where we build a regression model selection procedure from an ensemble of models, towards better estimation of the uncertain parameters of the weighted-Tchebycheff expensive black-box multi-objective function.

Bayesian Optimization Model Selection +1

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