BI Norwegian Business School · Simula Research Laboratory

Fabian Nøst Harang

Professor of Data Science at BI and Adjunct Chief Research Scientist at Simula, working on mathematical and data science methods for complex time series in retail, transportation and finance.

Affiliations Simula SURE-AI AMOR

About

Research with memory, uncertainty and structure.

I am an applied mathematician by training. My research is focused on mathematical and data science methods for complex time series data, with applications in retail, transportation and finance.

What keeps me curious is how mathematical structure can make complex data a little more useful.

Research

Current research interests

Current work is mainly concerned with complex time series in retail, transportation and finance, alongside stochastic modelling and reliable decision support.

01

Applied Stochastic modelling with applications in Industry

Data science and modelling methods for retail, transportation and finance, where uncertainty, dynamics and operational decisions need to be handled together.

02

Signature methods in Data Science

Feature representations for paths, images and time series, with an emphasis on memory, structure and interpretable learning.

03

Stochastic Analysis

Pathwise methods, stochastic differential equations, regularization by noise and Volterra-type systems.

04

Efficient and reliable data-driven decisions

Practical data-driven tools for decisions under uncertainty, developed with AMOR, SURE-AI and collaborators.

Software for Volterra signatures

The tensordev repository by Paul Hager, Luca Pelizzari and collaborators provides efficient computation of Volterra signatures and related objects from recent preprints.

View tensordev on GitHub

AI Notes

Thoughts on AI

A dedicated place for notes, talks and public-facing reflections on AI, mathematical risk and reliable data-driven decisions.

News

Updates from AMOR and SURE-AI

A simple news area for selected AMOR and SURE-AI updates, AI notes, notes, talks, reports and other items worth highlighting.

AMOR updates

Selected centre news, activities and research highlights can be posted here.

AMOR centre

SURE-AI updates

Relevant news from SURE-AI, especially around reliable AI methods and data-driven decisions.

Visit SURE-AI

Thoughts on AI

Public reports, advisory documents and short reflections on AI can be collected in the AI Notes section.

AI Notes

Publications

Recent and selected work

A complete, compact publication list is included below, with direct links to arXiv records where available. Google Scholar remains the best place for citation counts and profile-level updates.

2024

On the signature of an image

Joscha Diehl, Kurusch Ebrahimi-Fard, Fabian Harang, Samy Tindel

Stochastic Processes and their Applications, 187, 104661, 2025. DOI: 10.1016/j.spa.2025.104661

Centres

AMOR and SURE-AI

Research leadership and collaboration live across centres that connect mathematics, operations research and reliable data-driven methods.

Contact

Get in touch

The easiest way to reach me is by email. For research and collaboration requests, please include a short description of the topic and relevant timelines.

Location
BI Norwegian Business School and Simula Research Laboratory, Oslo