Bilde av Wally, Youssef
Bilde av Wally, Youssef
PhD student Department of Physics and Technology youssef.m.wally@uit.no +4740630581 Tromsø You can find me here

Youssef Wally


Job description

I focus on advance representation learning techniques, with a particular emphasis on developing novel similarity measures and clustering methods. My research explores how relationships—extracted from complex datasets such as spatial omics—can capture intricate dependencies beyond pairwise interactions, offering a richer understanding of medical and biological data. Given the challenges posed by varying structures and labelled samples, my work aims to incorporate underlying semantic relationships through knowledge embeddings and non-Euclidean geometries. By leveraging these advanced techniques, seeking to develop more meaningful similarity measures that enhance the analysis of medical and healthcare data, ultimately contributing to improved predictive modelling and decision-making in clinical and biomedical applications.


  • Youssef Wally, Johan Mylius-Kroken, Michael Kampffmeyer, Rezvan Ehsani, Vladan Milosevic, Elisabeth Wetzer :
    Flatland and Beyond: Mutual Information Across Geometries
    IEEE International Conference on Computer Vision Workshop (ICCVW) 19. October 2025 DOI / ARKIV
  • Lara Elvevåg, Youssef Wally, Benjamin Ricaud, Vladan Milosevic, Elisabeth Wetzer :
    Charting Cellular Networks in the Tumor Microenvironment: Graph Visualizations in Highly-Multiplexed Breast Cancer Tissue
    05. January 2026 DOI / ARKIV
  • Youssef Wally, Johan Mylius-Kroken, Michael Kampffmeyer, Rezvan Ehsani, Vladan Milosevic, Elisabeth Wetzer :
    Hyperbolic Representation Learning for Spatial Biology: Evaluating Cell Type Hierarchies in Breast Cancer Imaging Data
    05. January 2026 DOI / ARKIV
  • Youssef Wally, Johan Mylius-Kroken, Michael Kampffmeyer, Rezvan Ehsani, Vladan Milosevic, Elisabeth Wetzer :
    Hyperbolic Representation Learning for Spatial Omics
    15. November 2025 ARKIV
  • Youssef Wally, Johan Mylius-Kroken, Michael Kampffmeyer, Rezvan Ehsani, Vladan Milosevic, Elisabeth Wetzer :
    Mutual Information Across Geometries
    25. November 2025 ARKIV
  • Youssef Wally, Martin Giese, Basil Ell, Benjamin Ricaud, Elisabeth Wetzer :
    Cell Niche Discovery via Association Rules Mining
    25. November 2025 ARKIV
  • Youssef Wally, Johan Mylius-Kroken, Michael Kampffmeyer, Rezvan Ehsani, Vladan Milosevic, Elisabeth Wetzer :
    Hyperbolic Representation Learning for Spatial Biology: Capturing Cell Type Hierarchies in Breast Cancer
    07. December 2025 DOI / ARKIV
  • Youssef Wally, Jingsong Liu, Elisabeth Wetzer, Peter Schüffler :
    CLEAR-WSI: Foundation Model Empowered Whole Slide Image Retrieval
    29. October 2025 ARKIV
  • Elisabeth Wetzer, Youssef Wally, Artem Galushko, Elisavet Kozyri, Kristoffer Wickstrøm :
    How to Tackle Bias and Protect Privacy in the Age of AI?
    17. September 2025 DOI / ARKIV
  • Youssef Wally, Jinsong Liu, Elisabeth Wetzer, Peter Schüffler :
    Computational Pathology Seminar at The Arctic University of Norway - UiT
    02. October 2025 ARKIV
  • Youssef Wally, Johan Mylius-Kroken, Michael Kampffmeyer, Rezvan Ehsani, Vladan Milosevic, Elisabeth Wetzer :
    Presentation at PhD school on multi-modal learning
    11. August 2025 ARKIV

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    Publications outside Cristin

    • DiaMond: Dementia Diagnosis with Multi-Modal Vision Transformers Using MRI and PET
    • Personalized k-fold Cross-Validation Analysis with Transfer from Phasic to Tonic Pain Recognition on X-ITE Pain Database


    Research interests

    Youssef’s interests lie at the intersection of medical and healthcare data, with a strong focus on developing advanced similarity measures for structured data. Specifically, in leveraging representation learning techniques and non-Euclidean embeddings to improve the analysis of patient records, biological networks, and clinical decision-making systems. By incorporating domain knowledge—such as the hierarchical relationships between medical diagnoses, the functional connections in molecular interactions, or the contextual significance of clinical pathways—aiming to create more meaningful similarity measures that enhance predictive modeling and knowledge discovery in healthcare. Additionally, exploring how relational taxonomies of medical concepts and patient trajectories can be effectively embedded to refine data augmentation strategies, ultimately improving the robustness and interpretability of machine learning models in medical applications.

    Teaching

    • FYS-2010 Image Processing
    • FYS-2021 Machine Learning

    Member of research group



    Forskningsparken 1 B201


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