Emmanuel Müller Ira Assent Thomas Seidl HSM: Heterogeneous Subspace Mining in High Dimensional Data. 497-516 2009 SSDBM http://dx.doi.org/10.1007/978-3-642-02279-1_36 conf/ssdbm/2009 db/conf/ssdbm/ssdbm2009.html#MullerAS09