User profiles for Dimitris Kalimeris

Dimitris Kalimeris

Research Scientist, Meta
Verified email at meta.com
Cited by 355

Preference amplification in recommender systems

D Kalimeris, S Bhagat, S Kalyanaraman… - Proceedings of the 27th …, 2021 - dl.acm.org
Recommender systems have become increasingly accurate in suggesting content to users,
resulting in users primarily consuming content through recommendations. This can cause …

Sgd on neural networks learns functions of increasing complexity

D Kalimeris, G Kaplun, P Nakkiran… - Advances in neural …, 2019 - proceedings.neurips.cc
We perform an experimental study of the dynamics of Stochastic Gradient Descent (SGD) in
learning deep neural networks for several real and synthetic classification tasks. We show …

Robust neural networks are more interpretable for genomics

PK Koo, S Qian, G Kaplun, V Volf, D Kalimeris - bioRxiv, 2019 - biorxiv.org
Deep neural networks (DNNs) have been applied to a variety of regulatory genomics tasks.
For interpretability, attribution methods are employed to provide importance scores for each …

Robust influence maximization for hyperparametric models

D Kalimeris, G Kaplun, Y Singer - … Conference on Machine …, 2019 - proceedings.mlr.press
In this paper we study the problem of robust influence maximization in the independent cascade
model under a hyperparametric assumption. In social networks users influence and are …

Sgd on neural networks learns functions of increasing complexity

P Nakkiran, G Kaplun, D Kalimeris, T Yang… - arXiv preprint arXiv …, 2019 - arxiv.org
We perform an experimental study of the dynamics of Stochastic Gradient Descent (SGD) in
learning deep neural networks for several real and synthetic classification tasks. We show …

Learning diffusion using hyperparameters

D Kalimeris, Y Singer, K Subbian… - … on Machine Learning, 2018 - proceedings.mlr.press
In this paper we advocate for a hyperparametric approach to learn diffusion in the independent
cascade (IC) model. The sample complexity of this model is a function of the number of …

CLARA: confidence of labels and raters

…, S Metz, N Chandra, J Jing, D Kalimeris - Proceedings of the 26th …, 2020 - dl.acm.org
Large online services employ thousands of people to label content for applications such as
video understanding, natural language processing, and content policy enforcement. While …

Improving selfish routing for risk-averse players

D Fotakis, D Kalimeris, T Lianeas - International Conference on Web and …, 2015 - Springer
We investigate how and to which extent one can exploit risk-aversion and modify the perceived
cost of the players in selfish routing so that the Price of Anarchy ( $$\mathrm {PoA}$$ ) is …

[PDF][PDF] The role of Greece, Ireland, Italy, and Spain as economic competitors according to the WEF index

D Kalimeris - International Journal of Economics and Research, 2012 - ijeronline.com
The purpose of this paper is to investigate the existence of positive or negative causality
among variables that are part of the economic competitiveness methodology used by World …

[PDF][PDF] An event analysis of asymmetric information on merger and acquisition announcements in the SE European Region: The case of Greek early mover companies

D Kalimeris - International Research Journal of Finance and …, 2010 - researchgate.net
Merging or acquiring has been a tactical practice for companies in order to penetrate markets.
As a means of foreign direct investment, it provides plenty of comparative advantages …