Search Results for author: Tommy S. Alstrøm

Found 4 papers, 3 papers with code

Multi-view self-supervised learning for multivariate variable-channel time series

1 code implementation13 Jul 2023 Thea Brüsch, Mikkel N. Schmidt, Tommy S. Alstrøm

However, for multivariate time series data, the set of input channels often varies between applications, and most existing work does not allow for transfer between datasets with different sets of input channels.

Contrastive Learning EEG +2

Synthetic data shuffling accelerates the convergence of federated learning under data heterogeneity

1 code implementation23 Jun 2023 Bo Li, Yasin Esfandiari, Mikkel N. Schmidt, Tommy S. Alstrøm, Sebastian U. Stich

In this paper, we establish a precise and quantifiable correspondence between data heterogeneity and parameters in the convergence rate when a fraction of data is shuffled across clients.

Federated Learning

On the effectiveness of partial variance reduction in federated learning with heterogeneous data

2 code implementations CVPR 2023 Bo Li, Mikkel N. Schmidt, Tommy S. Alstrøm, Sebastian U. Stich

In this paper, we first revisit the widely used FedAvg algorithm in a deep neural network to understand how data heterogeneity influences the gradient updates across the neural network layers.

Federated Learning

Raman Spectrum Matching with Contrastive Representation Learning

no code implementations25 Feb 2022 Bo Li, Mikkel N. Schmidt, Tommy S. Alstrøm

We propose a new machine learning technique for Raman spectrum matching, based on contrastive representation learning, that requires no preprocessing and works with as little as a single reference spectrum from each class.

BIG-bench Machine Learning Conformal Prediction +1

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