German "Lektor": proofreader / copy-editor. 500 guard pairs teaching that mechanical errors are not a voice signal — a passage riddled with typos should be dispreferred purely for the errors, not mistaken for a distinct style.

field content

prompt a back-written creative-writing instruction the passage answers

chosen the clean public-domain passage, unedited

rejected the same passage with realistic typos injected (transposed/dropped letters, doubled… See the full description on the dataset page: https://huggingface.co/datasets/schneewolflabs/lektor-dpo.