Research
Tomoko's work sits between mathematics and machine learning: she develops the formal machinery behind operator-based latent dynamics — the conditions under which learned operators compose, the bounds on what they can extrapolate to, and the geometric structure that makes some operator libraries reusable across modalities.
She is a co-author on the compositional latent dynamics result and is currently leading a multi-modal extension that targets unified perception-prediction at scale. She presents results at NeurIPS and ICML with what one collaborator calls 'a complete absence of marketing instinct,' which the lab considers a virtue.
Tomoko works primarily from Kyoto and participates in the world-models cross-cell review pool through asynchronous artefact review rather than synchronous calls. Her review notes are widely read across the axis.
Background
Ph.D. mathematics, Kyoto University, 2014. Visiting scholar at MIT (Math), 2018-2019.
Prior to alphabell: Kyoto University; Riken AIP collaborator (2018-2021); Volterra Cognition.
Selected publications
-
Aug 2025 · ab-compositional-Compositional Latent Dynamics for Long-Horizon World ModellingJonas Bremer, Sasha Petrov, Felicity Anjali Sandirasegaram, Tomoko Niwa
-
Jul 2025 · ab-embodied-pretrEmbodied Pretraining via Cell-Operated Simulation: a 70k-environment studyLin Hao, Dimitri Yelchaninov, Sera Wijewardene, Ananya Mukherjee
-
Dec 2024 · ab-counterfactualCounterfactual Rollouts for Planning: a 30-day deployment studySasha Petrov, Maya Quesada, Bilal Hossain
-
May 2025 · ab-mechanistic-ciMechanistic Circuit Analysis at Frontier Scale: cells as a unit of interpretabilityJiang Yifei, Nico Almgren, Karima Belkadi, Hester Vandekerckhove
-
Oct 2024 · ab-federated-compA Federated Compute Scheduler for an Asynchronous Research LabPranav Iyer, Yusra Habibi, Akoss Vidor
Recent talks
- Operators learn what they are told to learn, NeurIPS 2024
- Cross-modal coherence at scale, ICML 2025
Tomoko is currently part of node-cell voronoi-19, working under the World models research axis. The cell is open to substantive correspondence from researchers working on adjacent problems; route requests through voronoi-19@alphabell.com or directly to Tomoko at tomoko-niwa@alphabell.com.
Contact
- EMAIL
tomoko-niwa@alphabell.com - ORCID
0000-5560-3816-8152 - X
@tomokoniwa - BLUESKY
tomoko-niwa.bsky.social - GITHUB
@tomokoniwa
Cross-references