Retrieval and novelty detection at the sentence level James Allan, Courtney Wade, and Alvaro Bolivar   View Paper (PDF)   Return to Novelty and topic change BIBTEX @inproceedings       {DBLP:conf/sigir/AllanWB03,   author    = {James Allan and                 Courtney Wade and                 Alvaro Bolivar},    booktitle = {SIGIR},    title     = {Retrieval and novelty detection at the sentence level.},    pages     = {314-321},    year      = {2003},    url       = {db/conf/sigir/sigir2003.html#AllanWB03},    ee        = {http://doi.acm.org/10.1145/860493},    crossref  = {conf/sigir/2003},    bibsource = {DBLP, http://dblp.uni-trier.de}  } ©2004 Association for Computing Machinery