Course Description

Deep learning is a rapidly growing segment of machine learning. It is increasingly used to deliver near-human level accuracy for many tasks such as image classification, voice recognition and natural language processing. Applications areas include facial recognition, scene detection, advanced medical and pharmaceutical research, and autonomous, self-driving vehicles. 

This 5-day course is built upon tutorials on specific topics on deep learning. The course further encompasses among others keynote talks, as well as special sessions on industry and diversity in AI as part of the NLDL conference program. 

The Winter School will provide a study of several emerging topics of high relevance within advanced deep learning, from a basic understanding of the techniques to the latest state-of-the-art developments in the field. In addition, the participants will be exposed to the latest advances and applications in deep learning by the oral presentations and poster presentations in the main conference program.

The course will thus consist of 5 full days of the NLDL conference including: tutorials, keynote sessions, oral presentations and poster presentations, as well as practical components.

Winter School Tutorial and Speakers

The NLDL Winter School will consist of tutorials from leading experts in the machine learning field. Below we present each tutorial, followed by the tutorial speakers. 

Learning with Order: Deep Ordinal Representations for Trustworthy AI

Many imaging tasks involve labels that are inherently ordinal, (e.g., such as disease severity grades and cancer stages in medical imaging). These labels exhibit a clear order but lack fixed distances between categories. Despite this, most AI pipelines treat ordinal labels as either nominal (using cross-entropy loss) or continuous (using regression losses such as MSE). This mismatch leads to brittle models, implausible errors, and topologically inconsistent predictions—particularly in safety-critical settings.

This tutorial presents Deep Ordinal Learning as a unifying inductive bias for robust and trustworthy AI. Rather than viewing ordinal methods as task-specific fixes, we provide a coherent, end-to-end perspective on how ordinal structure can be explicitly incorporated across the modelling pipeline.

The tutorial begins with a brief introduction to the motivation and structure of the session, followed by four core technical sections:

1. Robust Ordinal Classification: rank-consistent architectures, unimodal constraints, and ordinal-aware losses that explicitly enforce order and reduce clinically severe misclassifications, especially in small, noisy, and imbalanced datasets.

2. Ordinal Segmentation: extension of ordinality to dense prediction tasks using pixel-wise ordinal losses to enforce topological and anatomical consistency in nested or layered structures.

3. Closing the Metric Gap: ordinal-specific evaluation protocols (e.g., Quadratic Weighted Kappa, Uniform Ordinal Classification Index) that better reflect clinical risk than nominal or regression metrics.

4. The Frontier – Ordinal Representations and Generative AI: ordinal constraints in representation learning and generative models

A hands-on component using PyTorch will reinforce practical adoption.

Learning objectives:

1. understand when and why ordinal modelling is appropriate

2. learn how to design ordinal-aware classifiers and segmentation models

3. apply appropriate ordinal evaluation metrics

4. gain insight into emerging ordinal approaches for representation learning and generative AI.

The tutorial will be presented by Valentina Corbetta from the The Netherlands Cancer Institute and Wilson Silva from Utrecht University.

Arctic AI

Tutorial under development

Contact : 

Winter School Chair:

• Puneet Sharma (puneet.sharma@uit.no)

• Kristoffer Wickstrøm (kristoffer.k.wickstrom@uit.no)

• Elisabeth Wetzer (elisabeth.wetzer@uit.no)

For other inquiries: 

• Robert Jenssen (robert.jenssen@uit.no)

• Michael Kampffmeyer (michael.c.kampffmeyer@uit.no).