LightOnOCR-3 training: using OCR reference text to guide logical block grouping

IgorCarron · x · 2026-10-09

The LightOn team shares a LightOnOCR-3 training-data detail: the goal was to produce logical blocks, not just layout boxes. They used LightOnOCR 2 output as a consistent reference text, with its paragraph boundaries guiding how detected lines were grouped into boxes — creating coherent blocks for downstream chunking. A concrete look at the engineering behind document-parsing training data.

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