Search Results for author: Georgios Kollias

Found 10 papers, 1 papers with code

Larimar: Large Language Models with Episodic Memory Control

no code implementations18 Mar 2024 Payel Das, Subhajit Chaudhury, Elliot Nelson, Igor Melnyk, Sarath Swaminathan, Sihui Dai, Aurélie Lozano, Georgios Kollias, Vijil Chenthamarakshan, Jiří, Navrátil, Soham Dan, Pin-Yu Chen

Efficient and accurate updating of knowledge stored in Large Language Models (LLMs) is one of the most pressing research challenges today.

NeuroPrune: A Neuro-inspired Topological Sparse Training Algorithm for Large Language Models

no code implementations28 Feb 2024 Amit Dhurandhar, Tejaswini Pedapati, Ronny Luss, Soham Dan, Aurelie Lozano, Payel Das, Georgios Kollias

Transformer-based Language Models have become ubiquitous in Natural Language Processing (NLP) due to their impressive performance on various tasks.

Machine Translation Natural Language Inference

Cardinality-Regularized Hawkes-Granger Model

no code implementations NeurIPS 2021 Tsuyoshi Idé, Georgios Kollias, Dzung T. Phan, Naoki Abe

In this paper, we propose a mathematically well-defined sparse causal learning framework based on a cardinality-regularized Hawkes process, which remedies the pathological issues of existing approaches.

Management Point Processes

Directed Graph Auto-Encoders

1 code implementation25 Feb 2022 Georgios Kollias, Vasileios Kalantzis, Tsuyoshi Idé, Aurélie Lozano, Naoki Abe

We introduce a new class of auto-encoders for directed graphs, motivated by a direct extension of the Weisfeiler-Leman algorithm to pairs of node labels.

Link Prediction

Projection techniques to update the truncated SVD of evolving matrices

no code implementations13 Oct 2020 Vassilis Kalantzis, Georgios Kollias, Shashanka Ubaru, Athanasios N. Nikolakopoulos, Lior Horesh, Kenneth L. Clarkson

This paper considers the problem of updating the rank-k truncated Singular Value Decomposition (SVD) of matrices subject to the addition of new rows and/or columns over time.

Recommendation Systems

Accelerating Physics-Based Simulations Using Neural Network Proxies: An Application in Oil Reservoir Modeling

no code implementations23 May 2019 Jiri Navratil, Alan King, Jesus Rios, Georgios Kollias, Ruben Torrado, Andres Codas

We develop a proxy model based on deep learning methods to accelerate the simulations of oil reservoirs--by three orders of magnitude--compared to industry-strength physics-based PDE solvers.

Low rank methods for multiple network alignment

no code implementations21 Sep 2018 Huda Nassar, Georgios Kollias, Ananth Grama, David F. Gleich

While there are a large number of effective techniques for pairwise problems with two networks that scale in terms of edges, these cannot be readily extended to align multiple networks as the computational complexity will tend to grow exponentially with the number of networks. In this paper we introduce a new multiple network alignment algorithm and framework that is effective at aligning thousands of networks with thousands of nodes.

Provably convergent acceleration in factored gradient descent with applications in matrix sensing

no code implementations1 Jun 2018 Tayo Ajayi, David Mildebrath, Anastasios Kyrillidis, Shashanka Ubaru, Georgios Kollias, Kristofer Bouchard

We present theoretical results on the convergence of \emph{non-convex} accelerated gradient descent in matrix factorization models with $\ell_2$-norm loss.

Quantum State Tomography

MXNET-MPI: Embedding MPI parallelism in Parameter Server Task Model for scaling Deep Learning

no code implementations11 Jan 2018 Amith R Mamidala, Georgios Kollias, Chris Ward, Fausto Artico

In this paper, we discuss the drawbacks of such approaches and propose a generic framework supporting both PS and MPI programming paradigms, co-existing at the same time.

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