Search Results for author: Keshav Pingali

Found 6 papers, 1 papers with code

Physics Informed Neural Network Code for 2D Transient Problems (PINN-2DT) Compatible with Google Colab

no code implementations24 Sep 2023 Paweł Maczuga, Maciej Sikora, Maciej Skoczeń, Przemysław Rożnawski, Filip Tłuszcz, Marcin Szubert, Marcin Łoś, Witold Dzwinel, Keshav Pingali, Maciej Paszyński

We present an open-source Physics Informed Neural Network environment for simulations of transient phenomena on two-dimensional rectangular domains, with the following features: (1) it is compatible with Google Colab which allows automatic execution on cloud environment; (2) it supports two dimensional time-dependent PDEs; (3) it provides simple interface for definition of the residual loss, boundary condition and initial loss, together with their weights; (4) it support Neumann and Dirichlet boundary conditions; (5) it allows for customizing the number of layers and neurons per layer, as well as for arbitrary activation function; (6) the learning rate and number of epochs are available as parameters; (7) it automatically differentiates PINN with respect to spatial and temporal variables; (8) it provides routines for plotting the convergence (with running average), initial conditions learnt, 2D and 3D snapshots from the simulation and movies (9) it includes a library of problems: (a) non-stationary heat transfer; (b) wave equation modeling a tsunami; (c) atmospheric simulations including thermal inversion; (d) tumor growth simulations.

MULTI-LEVEL APPROACH TO ACCURATE AND SCALABLE HYPERGRAPH EMBEDDING

no code implementations29 Sep 2021 Sepideh Maleki, Donya Saless, Dennis Wall, Keshav Pingali

Many problems such as node classification and link prediction in network data can be solved using graph embeddings, and a number of algorithms are known for constructing such embeddings.

Graph Embedding hypergraph embedding +2

Sonic: A Sampling-based Online Controller for Streaming Applications

no code implementations15 Aug 2021 Yan Pei, Keshav Pingali

It is challenging to find knob settings that optimize the run-time performance of such applications because the optimal knob settings are usually functions of inputs, computing platforms, time as well as user's requirements, which can be very diverse.

Bayesian Optimization

Optimizing Graph Transformer Networks with Graph-based Techniques

no code implementations16 Jun 2021 Loc Hoang, Udit Agarwal, Gurbinder Gill, Roshan Dathathri, Abhik Seal, Brian Martin, Keshav Pingali

Unfortunately, the space overhead of this approach can be large, so in practice it is used only for small graphs.

Scalable Hypergraph Embedding System

no code implementations9 Mar 2021 Sepideh Maleki, Donya Saless, Dennis P. Wall, Keshav Pingali

While hypergraphs are a generalization of graphs, state-of-the-art graph embedding techniques are not adequate for solving prediction and classification tasks on large hypergraphs accurately in reasonable time.

Graph Embedding hypergraph embedding +2

An Elementary Introduction to Kalman Filtering

2 code implementations9 Oct 2017 Yan Pei, Swarnendu Biswas, Donald S. Fussell, Keshav Pingali

Kalman filtering is a classic state estimation technique used widely in engineering applications such as statistical signal processing and control of vehicles.

Systems and Control

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