Focused named entity recognition using machine learning

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\begin{bibtex} @inproceedings{DBLP:conf/sigir/ZhangPZ04,

 author    = {Li Zhang and
              Yue Pan and
              Tong Zhang},
 title     = {Focused named entity recognition using machine learning},
 booktitle = {SIGIR},
 year      = {2004},
 pages     = {281-288},
 ee        = {http://doi.acm.org/10.1145/1008992.1009042},
 crossref  = {DBLP:conf/sigir/2004},
 bibsource = {DBLP, http://dblp.uni-trier.de}

}

\end{bibtex}