Ocr on The Constant Factorhttps://0x1za.github.io/tags/ocr/Recent content in Ocr on The Constant FactorHugo -- gohugo.ioen-usMon, 15 Jun 2026 00:00:00 +0000Your OCR's error rate is undefined — and you don't know ithttps://0x1za.github.io/blog/cev-score/Mon, 15 Jun 2026 00:00:00 +0000https://0x1za.github.io/blog/cev-score/Your OCR pipeline reports a Character Error Rate of 0.04. Clean. Except the page it ran on has three columns, the model merged two of them, and the “error rate” you’re looking at was computed over text in an order that exists nowhere on the page. The number isn’t slightly wrong — it’s measuring something that has no meaning. This is a short, interactive tour of why, and of a metric that gives you a number you can actually decompose.