@inProceedings{SPIRE06b,   acceptancerate = {.26},   address        = {Glasgow, {UK}},   author         = {Andrea Esuli and Tiziano Fagni and Fabrizio Sebastiani},   booktitle      = {Proceedings of the 13th International Symposium on String                     Processing and Information Retrieval (SPIRE'06)},   pages          = {13--24},   title          = {{TreeBoost.MH}: {A} Boosting Algorithm for Multi-label                     Hierarchical Text Categorization},   year           = 2006,}