Julián Solórzano-Soto Victor Mijangos Alejandro Pimentel Fernanda López-Escobedo Azucena Montes Gerardo Sierra Authorship Verification by combining SVMs with Kernels Optimized for Different Feature Categories. 2015 CLEF (Working Notes) https://ceur-ws.org/Vol-1391/129-CR.pdf conf/clef/2015w db/conf/clef/clef2015w.html#SolorzanoMPLMS15