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Bluzen Labs

Blog

Method write-ups, evaluation arguments and the occasional account of six weeks spent on something that did not work.

5 posts

Research28 Aug 2026 · 7 min

The tail is the product

Why we throw away aggregate F1 on tagging benchmarks, and what we report instead. A short argument with a long table attached.

Ashish Kumar, Rin AmagaiRead
Research19 Aug 2026 · 9 min

Regions, not repairs

Inpainting treats a mask as damage. PrismStream treats it as composition. Notes from six weeks of getting that distinction to survive training.

Ashish Kumar, Kaede MoriiRead
Data6 Aug 2026 · 6 min

Filters are opinions, so ship the score

On building Aurora: why every quality filter in the pipeline emits a column instead of deleting a row, and what that costs in storage.

Ashish Kumar, Yuki HoshinoRead
Infrastructure21 Jul 2026 · 5 min

Scheduling for four GPUs

Kubernetes answers a question small labs are not asking. Notes on writing a scheduler whose main feature is explaining itself.

Kaede MoriiRead
Lab4 Jul 2026 · 2 min

Hello world

The first post. Mostly here so the blog has something to render while the real writing gets started.

Ashish KumarRead