Search Results for author: Michael Roberts

Found 16 papers, 4 papers with code

FedMAP: Unlocking Potential in Personalized Federated Learning through Bi-Level MAP Optimization

no code implementations29 May 2024 Fan Zhang, Carlos Esteve-Yagüe, Sören Dittmer, Carola-Bibiane Schönlieb, Michael Roberts

This study contributes to PFL by establishing a solid theoretical foundation for the proposed method and offering a robust, ready-to-use framework that effectively addresses the challenges posed by non-IID data in FL.

A study of why we need to reassess full reference image quality assessment with medical images

no code implementations29 May 2024 Anna Breger, Ander Biguri, Malena Sabaté Landman, Ian Selby, Nicole Amberg, Elisabeth Brunner, Janek Gröhl, Sepideh Hatamikia, Clemens Karner, Lipeng Ning, Sören Dittmer, Michael Roberts, AIX-COVNET Collaboration, Carola-Bibiane Schönlieb

Image quality assessment (IQA) is not just indispensable in clinical practice to ensure high standards, but also in the development stage of novel algorithms that operate on medical images with reference data.

The curious case of the test set AUROC

1 code implementation19 Dec 2023 Michael Roberts, Alon Hazan, Sören Dittmer, James H. F. Rudd, Carola-Bibiane Schönlieb

Whilst the size and complexity of ML models have rapidly and significantly increased over the past decade, the methods for assessing their performance have not kept pace.

Specificity

Estimating defection in subscription-type markets: empirical analysis from the scholarly publishing industry

no code implementations18 Nov 2022 Michael Roberts, J. Ignacio Deza, Hisham Ihshaish, Yanhui Zhu

We show that this approach can be both accurate as well as uniquely useful in the business-to-business context, with which the scholarly publishing business model shares similarities.

Navigating the challenges in creating complex data systems: a development philosophy

no code implementations21 Oct 2022 Sören Dittmer, Michael Roberts, Julian Gilbey, Ander Biguri, AIX-COVNET Collaboration, Jacobus Preller, James H. F. Rudd, John A. D. Aston, Carola-Bibiane Schönlieb

In this perspective, we argue that despite the democratization of powerful tools for data science and machine learning over the last decade, developing the code for a trustworthy and effective data science system (DSS) is getting harder.

Philosophy

Chan-Vese Reformulation for Selective Image Segmentation

no code implementations21 Nov 2018 Michael Roberts, Jack Spencer

Selective segmentation involves incorporating user input to partition an image into foreground and background, by discriminating between objects of a similar type.

Image Segmentation Segmentation +1

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