Success in books: predicting book sales before publication Xindi Wang, Burcu Yucesoy, Onur Varol, Tina Eliassi-Rad and Albert-László Barabási EPJ Data Sci., 8 1 (2019) 31 Published online: 17 October 2019 DOI: 10.1140/epjds/s13688-019-0208-6