Search Results for author: Aristeidis Panos

Found 5 papers, 3 papers with code

First Session Adaptation: A Strong Replay-Free Baseline for Class-Incremental Learning

no code implementations ICCV 2023 Aristeidis Panos, Yuriko Kobe, Daniel Olmeda Reino, Rahaf Aljundi, Richard E. Turner

In this work, we develop a baseline method, First Session Adaptation (FSA), that sheds light on the efficacy of existing CIL approaches and allows us to assess the relative performance contributions from head and body adaption.

Class Incremental Learning Image Classification +1

How Good are Low-Rank Approximations in Gaussian Process Regression?

1 code implementation13 Dec 2021 Constantinos Daskalakis, Petros Dellaportas, Aristeidis Panos

In particular, we bound the Kullback-Leibler divergence between an exact GP and one resulting from one of the afore-described low-rank approximations to its kernel, as well as between their corresponding predictive densities, and we also bound the error between predictive mean vectors and between predictive covariance matrices computed using the exact versus using the approximate GP.

regression

Scalable Marked Point Processes for Exchangeable and Non-Exchangeable Event Sequences

1 code implementation30 May 2021 Aristeidis Panos, Ioannis Kosmidis, Petros Dellaportas

We adopt the interpretability offered by a parametric, Hawkes-process-inspired conditional probability mass function for the marks and apply variational inference techniques to derive a general and scalable inferential framework for marked point processes.

Point Processes Variational Inference

How Good are Low-Rank Approximations in Gaussian Process Regression?

3 code implementations3 Apr 2020 Constantinos Daskalakis, Petros Dellaportas, Aristeidis Panos

In particular, we bound the Kullback-Leibler divergence between an exact GP and one resulting from one of the afore-described low-rank approximations to its kernel, as well as between their corresponding predictive densities, and we also bound the error between predictive mean vectors and between predictive covariance matrices computed using the exact versus using the approximate GP.

Gaussian Processes regression

Fully Scalable Gaussian Processes using Subspace Inducing Inputs

no code implementations6 Jul 2018 Aristeidis Panos, Petros Dellaportas, Michalis K. Titsias

We introduce fully scalable Gaussian processes, an implementation scheme that tackles the problem of treating a high number of training instances together with high dimensional input data.

Extreme Multi-Label Classification Gaussian Processes +1

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