Search Results for author: Ioannis Koutis

Found 9 papers, 2 papers with code

Resource-constrained knowledge diffusion processes inspired by human peer learning

no code implementations1 Dec 2023 Ehsan Beikihassan, Amy K. Hoover, Ioannis Koutis, Ali Parviz, Niloofar Aghaieabiane

We consider a setting where a population of artificial learners is given, and the objective is to optimize aggregate measures of performance, under constraints on training resources.

Neural Network Pruning as Spectrum Preserving Process

no code implementations18 Jul 2023 Shibo Yao, Dantong Yu, Ioannis Koutis

In this paper, we identify the close connection between matrix spectrum learning and neural network training for dense and convolutional layers and argue that weight pruning is essentially a matrix sparsification process to preserve the spectrum.

Network Pruning

K-SpecPart: Supervised embedding algorithms and cut overlay for improved hypergraph partitioning

no code implementations7 May 2023 Ismail Bustany, Andrew B. Kahng, Ioannis Koutis, Bodhisatta Pramanik, Zhiang Wang

State-of-the-art hypergraph partitioners follow the multilevel paradigm that constructs multiple levels of progressively coarser hypergraphs that are used to drive cut refinement on each level of the hierarchy.

hypergraph partitioning Supervised dimensionality reduction

SGC: A semi-supervised pipeline for gene clustering using self-training approach in gene co-expression networks

no code implementations21 Sep 2022 Niloofar Aghaieabiane, Ioannis Koutis

A widely used approach for extracting information from gene expression data employ the construction of a gene co-expression network and the subsequent application of algorithms that discover network structure.

Clustering

Neurally boosted supervised spectral clustering

no code implementations29 Sep 2021 Ali Parviz, Ioannis Koutis

Spectral network embeddings are based on the computation of eigenvectors of a normalized graph Laplacian.

Clustering Network Embedding +1

Spectral Modification of Graphs for Improved Spectral Clustering

1 code implementation NeurIPS 2019 Ioannis Koutis, Huong Le

Applying then spectral clustering on $H$ has the potential to produce improved cuts that also exist in $G$ due to the cut similarity.

Clustering graph partitioning

Improved large-scale graph learning through ridge spectral sparsification

no code implementations ICML 2018 Daniele Calandriello, Alessandro Lazaric, Ioannis Koutis, Michal Valko

By constructing a spectrally-similar graph, we are able to bound the error induced by the sparsification for a variety of downstream tasks (e. g., SSL).

Graph Learning

Incremental Spectral Sparsification for Large-Scale Graph-Based Semi-Supervised Learning

no code implementations21 Jan 2016 Daniele Calandriello, Alessandro Lazaric, Michal Valko, Ioannis Koutis

While the harmonic function solution performs well in many semi-supervised learning (SSL) tasks, it is known to scale poorly with the number of samples.

Quantization

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