Use of material
Written for the people who decide whether to grant access: what the material is used for, what is not done with it, and how the work stays checkable.
Internal research into battery ageing. Values are extracted from published papers into a structured database and used for my own analysis.
I do not resell, redistribute or republish the texts. I do not offer the extracted data as a paid service, and I do not build a product for use outside this work. The extracted data does not substitute for a publisher's content and does not compete with it.
Language models are used as an extraction tool: they read a paper and take out a numeric value together with the conditions it was measured under. They do not write the work and are not an author of it, and publisher content is never submitted for model training. Each value keeps a citation to its source DOI.
Material is obtained only through the channels publishers and open repositories provide. Where no lawful copy can be reached, the paper stays in the index without one.
Published measurement sets are used on the terms set by their authors. Sets licensed without derivatives are not republished in any processed form — including as a chart. Where a licence requires attribution, it is given in full beside the figure, together with a note of what was changed. The list of sets with their terms is available on request to the holder of a set.
Every extracted value keeps its source DOI, the verbatim sentence it rests on, and the page. Every value keeps its provenance: which tool produced it, from which record, under which revision of the code, and when.
Retrieved material is stored on a server I control, with access control. Rate limits set by providers are observed. Access is limited to the people doing this work.
This is independent research, without institutional affiliation. It is stated plainly because publishers ask, and because an invented affiliation is worse than none.
Enquiries about access, text and data mining agreements, and verification of this work are answered within two working days.
Last updated 17 September 2026
