Athanasios N. Nikolakopoulos | DeepAI

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∙ 09/09/2021

Trust your neighbors: A comprehensive survey of neighborhood-based methods for recommender systems

Collaborative recommendation approaches based on nearest-neighbors are s...

0 Athanasios N. Nikolakopoulos, et al. ∙

∙ 10/13/2020

Projection techniques to update the truncated SVD of evolving matrices

This paper considers the problem of updating the rank-k truncated Singul...

0 Vassilis Kalantzis, et al. ∙

∙ 08/29/2020

Random Surfing Revisited: Generalizing PageRank's Teleportation Model

We revisit the Random Surfer model, focusing on its–often overlooked–Tel...

0 Athanasios N. Nikolakopoulos, et al. ∙

∙ 09/09/2019

Boosting Item-based Collaborative Filtering via Nearly Uncoupled Random Walks

Item-based models are among the most popular collaborative filtering app...

0 Athanasios N. Nikolakopoulos, et al. ∙

∙ 04/06/2018

Fast Decentralized Optimization over Networks

The present work introduces the hybrid consensus alternating direction m...

0 Meng Ma, et al. ∙

∙ 04/05/2018

Adaptive Diffusions for Scalable Learning over Graphs

Diffusion-based classifiers such as those relying on the Personalized Pa...

0 Dimitris Berberidis, et al. ∙

∙ 11/28/2017

Kernel-based Inference of Functions over Graphs

The study of networks has witnessed an explosive growth over the past de...

0 Vassilis N. Ioannidis, et al. ∙

∙ 06/30/2015

Top-N recommendations in the presence of sparsity: An NCD-based approach

Making recommendations in the presence of sparsity is known to present o...

0 Athanasios N. Nikolakopoulos, et al. ∙