Obtaining Low-Arity Discretizations from Online Data Streams. - Tapio Elomaa; Petri Lehtinen; Matti Saarela (ISMIS, 2008)

Maintaining Optimal Multi-way Splits for Numerical Attributes in Data Streams. - Tapio Elomaa; Petri Lehtinen (PAKDD, 2008)

Efficient Minimization of DFAs with Partial Transition. - Antti Valmari; Petri Lehtinen (STACS, 2008)

Efficient Minimization of DFAs with Partial Transition Functions - Antti Valmari; Petri Lehtinen (CoRR, 2008)