A general approach for incremental approximation and hierarchical clustering.

Guolong Lin Chandrashekhar Nagarajan Rajmohan Rajaraman David P. Williamson A general approach for incremental approximation and hierarchical clustering. 1147-1156 2006 conf/soda/2006 SODA http://doi.acm.org/10.1145/1109557.1109684 db/conf/soda/soda2006.html#LinNRW06