Sara Moricz, PhD · Research Data Scientist · Skåne, Sweden
Sara Moricz
I work on machine learning close to the data: sensor time series, anomaly detection, and models that run privately on the device. Right now I'm writing about small language models and why they struggle with Swedish.
Now updated 26 Oct 2026
- Starting a series on small language models and Swedish. First piece: the token tax, how much more it costs to use AI in your own language.
- Getting the Android beta of WithYou ready for its first testers.
- Research project: federated learning for language models, so models can learn from local text without the text leaving the device.
Projects
The token tax
Every language pays more than English to use AI. Swedish needs 35 % more tokens for the same text on ChatGPT, Hindi 57 %, Amharic over 480 %. Measured on 204 languages and 13 tokenizers, with open code and data.
Spin the globe →WithYou
A safety app for older people and their families. It learns what a normal day looks like on the phone and alerts a relative when something seems off. Anomaly detection runs on the device and no location history is stored.
Background
- NowApplied ML research: time series, anomaly detection, federated learning, differential privacyHorizon Europe and Vinnova projects
- 2019–2022Data scientist, IKEA DigitalCausal inference and a global decision-support tool
- 2013–2019PhD in Economics, Lund UniversityIncome inequality and policy evaluation; one chapter used NLP to track gendered language on Swedish Twitter after #metoo
New pieces by email
For now I write about small language models, Swedish and machine learning close to the data. I'm a curious generalist: economics, statistics and AI in one toolbox, pointed at what technology means for people. Concise and illustrated.