A paradigm for developing earthquake probability forecasts based on geoelectric data Hong-Jia Chen, Chien-Chih Chen, Guy Ouillon and Didier Sornette Eur. Phys. J. Special Topics, 230 1 (2021) 381-407 Published online: 19 January 2021 DOI: 10.1140/epjst/e2020-000258-9