Search Results for author: Marcel Nassar

Found 13 papers, 5 papers with code

MatSciML: A Broad, Multi-Task Benchmark for Solid-State Materials Modeling

1 code implementation12 Sep 2023 Kin Long Kelvin Lee, Carmelo Gonzales, Marcel Nassar, Matthew Spellings, Mikhail Galkin, Santiago Miret

We propose MatSci ML, a novel benchmark for modeling MATerials SCIence using Machine Learning (MatSci ML) methods focused on solid-state materials with periodic crystal structures.

Atomic Forces Multi-Task Learning

The Open MatSci ML Toolkit: A Flexible Framework for Machine Learning in Materials Science

1 code implementation31 Oct 2022 Santiago Miret, Kin Long Kelvin Lee, Carmelo Gonzales, Marcel Nassar, Matthew Spellings

We present the Open MatSci ML Toolkit: a flexible, self-contained, and scalable Python-based framework to apply deep learning models and methods on scientific data with a specific focus on materials science and the OpenCatalyst Dataset.

Pretraining Graph Neural Networks for few-shot Analog Circuit Modeling and Design

1 code implementation29 Mar 2022 Kourosh Hakhamaneshi, Marcel Nassar, Mariano Phielipp, Pieter Abbeel, Vladimir Stojanović

We show that pretraining GNNs on prediction of output node voltages can encourage learning representations that can be adapted to new unseen topologies or prediction of new circuit level properties with up to 10x more sample efficiency compared to a randomly initialized model.

Exploiting Long-Term Dependencies for Generating Dynamic Scene Graphs

1 code implementation18 Dec 2021 Shengyu Feng, Subarna Tripathi, Hesham Mostafa, Marcel Nassar, Somdeb Majumdar

Dynamic scene graph generation from a video is challenging due to the temporal dynamics of the scene and the inherent temporal fluctuations of predictions.

Graph Generation Object +3

Implicit SVD for Graph Representation Learning

1 code implementation NeurIPS 2021 Sami Abu-El-Haija, Hesham Mostafa, Marcel Nassar, Valentino Crespi, Greg Ver Steeg, Aram Galstyan

Recent improvements in the performance of state-of-the-art (SOTA) methods for Graph Representational Learning (GRL) have come at the cost of significant computational resource requirements for training, e. g., for calculating gradients via backprop over many data epochs.

Graph Representation Learning

On Local Aggregation in Heterophilic Graphs

no code implementations6 Jun 2021 Hesham Mostafa, Marcel Nassar, Somdeb Majumdar

We also show that homophily is a poor measure of the information in a node's local neighborhood and propose the Neighborhood Information Content(NIC) metric, which is a novel information-theoretic graph metric.

Node Classification

Structured Citation Trend Prediction Using Graph Neural Networks

no code implementations6 Apr 2021 Daniel Cummings, Marcel Nassar

Academic citation graphs represent citation relationships between publications across the full range of academic fields.

BIG-bench Machine Learning Citation Prediction

Permutohedral-GCN: Graph Convolutional Networks with Global Attention

no code implementations2 Mar 2020 Hesham Mostafa, Marcel Nassar

The attention coefficients depend on the Euclidean distance between learnable node embeddings, and we show that the resulting attention-based global aggregation scheme is analogous to high-dimensional Gaussian filtering.

Node Classification

Fully Convolutional Graph Neural Networks using Bipartite Graph Convolutions

no code implementations ICLR 2020 Marcel Nassar, Xin Wang, Evren Tumer

Graph neural networks have been adopted in numerous applications ranging from learning relational representations to modeling data on irregular domains such as point clouds, social graphs, and molecular structures.

Conditional Graph Neural Processes: A Functional Autoencoder Approach

no code implementations13 Dec 2018 Marcel Nassar, Xin Wang, Evren Tumer

Thus, we refer to our model as Conditional Graph Neural Process (CGNP).

Hierarchical Bipartite Graph Convolution Networks

no code implementations17 Nov 2018 Marcel Nassar

Recently, graph neural networks have been adopted in a wide variety of applications ranging from relational representations to modeling irregular data domains such as point clouds and social graphs.

Flexpoint: An Adaptive Numerical Format for Efficient Training of Deep Neural Networks

no code implementations NeurIPS 2017 Urs Köster, Tristan J. Webb, Xin Wang, Marcel Nassar, Arjun K. Bansal, William H. Constable, Oğuz H. Elibol, Scott Gray, Stewart Hall, Luke Hornof, Amir Khosrowshahi, Carey Kloss, Ruby J. Pai, Naveen Rao

Here we present the Flexpoint data format, aiming at a complete replacement of 32-bit floating point format training and inference, designed to support modern deep network topologies without modifications.

Generative Adversarial Network

A Factor Graph Approach to Joint OFDM Channel Estimation and Decoding in Impulsive Noise Environments

no code implementations7 Jun 2013 Marcel Nassar, Philip Schniter, Brian L. Evans

We propose a novel receiver for orthogonal frequency division multiplexing (OFDM) transmissions in impulsive noise environments.

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