1 code implementation • 4 Nov 2023 • Valentin Duruisseaux, Amit Chakraborty
In numerous contexts, high-resolution solutions to partial differential equations are required to capture faithfully essential dynamics which occur at small spatiotemporal scales, but these solutions can be very difficult and slow to obtain using traditional methods due to limited computational resources.
no code implementations • 9 Jun 2023 • Shinjan Ghosh, Amit Chakraborty, Georgia Olympia Brikis, Biswadip Dey
Physics-informed neural networks (PINNs) provide a framework to build surrogate models for dynamical systems governed by differential equations.
no code implementations • 12 Dec 2022 • Yaofeng Desmond Zhong, Tongtao Zhang, Amit Chakraborty, Biswadip Dey
Our experiments show that this simple modification improves the performance of transformer networks in multiple tasks.
no code implementations • 5 May 2022 • Tongtao Zhang, Biswadip Dey, Krishna Veeraraghavan, Harshad Kulkarni, Amit Chakraborty
Computational fluid dynamics (CFD) simulations, a critical tool in various engineering applications, often require significant time and compute power to predict flow properties.
no code implementations • 20 Jan 2022 • Rajat Arora, Pratik Kakkar, Biswadip Dey, Amit Chakraborty
This work presents a physics-informed neural network (PINN) based framework to model the strain-rate and temperature dependence of the deformation fields in elastic-viscoplastic solids.
no code implementations • 30 Oct 2021 • Haoran Su, Yaofeng Desmond Zhong, Biswadip Dey, Amit Chakraborty
Consequently, the decentralized RL agents learn network-level cooperative traffic signal phase strategies that reduce EMV travel time and the average travel time of non-EMVs in the network.
no code implementations • 12 Sep 2021 • Haoran Su, Yaofeng Desmond Zhong, Biswadip Dey, Amit Chakraborty
EMVLight extends Dijkstra's algorithm to efficiently update the optimal route for the EMVs in real time as it travels through the traffic network.
1 code implementation • NeurIPS 2021 • Yaofeng Desmond Zhong, Biswadip Dey, Amit Chakraborty
In this paper, we introduce a differentiable contact model, which can capture contact mechanics: frictionless/frictional, as well as elastic/inelastic.
no code implementations • 3 Dec 2020 • Yaofeng Desmond Zhong, Biswadip Dey, Amit Chakraborty
The last few years have witnessed an increased interest in incorporating physics-informed inductive bias in deep learning frameworks.
no code implementations • 11 Nov 2020 • Udari Madhushani, Biswadip Dey, Naomi Ehrich Leonard, Amit Chakraborty
Value function based reinforcement learning (RL) algorithms, for example, $Q$-learning, learn optimal policies from datasets of actions, rewards, and state transitions.
no code implementations • 3 Nov 2020 • Tongtao Zhang, Biswadip Dey, Pratik Kakkar, Arindam Dasgupta, Amit Chakraborty
We demonstrate this approach by predicting simulation results over out of range time interval and for novel design conditions.
1 code implementation • ICLR Workshop DeepDiffEq 2019 • Yaofeng Desmond Zhong, Biswadip Dey, Amit Chakraborty
In this work, we introduce Dissipative SymODEN, a deep learning architecture which can infer the dynamics of a physical system with dissipation from observed state trajectories.
no code implementations • 4 Oct 2019 • Akshay Iyer, Biswadip Dey, Arindam Dasgupta, Wei Chen, Amit Chakraborty
Microstructures of a material form the bridge linking processing conditions - which can be controlled, to the material property - which is the primary interest in engineering applications.
1 code implementation • ICLR 2020 • Yaofeng Desmond Zhong, Biswadip Dey, Amit Chakraborty
In this paper, we introduce Symplectic ODE-Net (SymODEN), a deep learning framework which can infer the dynamics of a physical system, given by an ordinary differential equation (ODE), from observed state trajectories.
no code implementations • 3 Apr 2019 • Amit Chakraborty, Sung Hak Lim, Mihoko M. Nojiri
Here we propose an interpretable network trained on the jet spectrum $S_{2}(R)$ which is a two-point correlation function of the jet constituents.
no code implementations • 1 Dec 2017 • Kai Fan, Qi Wei, Wenlin Wang, Amit Chakraborty, Katherine Heller
We propose a new method that uses deep learning techniques to solve the inverse problems.
no code implementations • 23 Oct 2017 • Feipeng Zhao, Martin Renqiang Min, Chen Shen, Amit Chakraborty
In this paper, we try to learn more complex connections between entities and relationships.
no code implementations • 30 Nov 2015 • Yangyang Xu, Ioannis Akrotirianakis, Amit Chakraborty
A lot of effort has been put to generalize the binary SVM to multiclass SVM (MSVM) which are more complex problems.
no code implementations • 30 Nov 2015 • Yangyang Xu, Ioannis Akrotirianakis, Amit Chakraborty
The Support Vector Machine (SVM) has been used in a wide variety of classification problems.
no code implementations • 16 Nov 2014 • Zhiwei Qin, Xiaocheng Tang, Ioannis Akrotirianakis, Amit Chakraborty
We consider classification tasks in the regime of scarce labeled training data in high dimensional feature space, where specific expert knowledge is also available.