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Germans Savcisens

PhD, Computational Social Science


Germans Savčišens
Герман Савчiшен
Герман Савчишен
Ghe-r-men Saf-chi-shen


Current Projects
  • Veracity and Truth Tracking in LLMs
  • Chains, Trees, and Graphs-of-Thought
  • Beliefs in LLM–Human Networks
  • Foundation Models for Event Data
About

Hi, I'm Germans Savcisens. I am a Postdoctoral Research Associate at the Khoury College of Computer Science at Northeastern University, where I am part of the RAD Lab and the Network Science Institute.

My research combines machine learning, network science, and human behavior. Right now, I am studying the knowledge and epistemic stability of large language models. I look at how LLMs embed knowledge, truth, and uncertainty, and what happens to those representations when models interact with each other.

I am originally from Latvia. Before moving to Boston, I earned my PhD from the Technical University of Denmark, where I worked on foundation models for longitudinal and behavioral data. This work led to the life2vec paper (Nature Computational Science), which introduces a transformer-based model that learns from individual life trajectories to predict health and socioeconomic outcomes.

I will be on the job market starting Spring 2027.

Latest Blog Posts

Dec 24, 2025

Is Life2vec a Mess?

What’s Wrong with AI Death Calculators?

A public-facing explanation of life2vec: its data, design, and limits, and why claims about '78% accuracy' and online death prediction are deeply misleading.

life2vec research explainer