Appendix for ‘That’s classified! Inventing a new patent taxonomy’

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This appendix describes the machine learning methodologies and techniques used in ‘That’s classified! Inventing a new patent taxonomy’.

Appendix to: Stephen D Billington, Alan J Hanna. ‘That’s classified! Inventing a new patent taxonomy’. Industrial and Corporate Change, Volume 30, Issue 3, June 2021, Pages 678–705.

https://doi.org/10.1093/icc/dtaa049