Discovering interesting patterns from data residing in systems
with the aforementioned properties is a challenging
task. One has to deal effectively with the size, distribution,
complexity and evolution of data. In recent years, several
approaches that deal with the distributed nature of the
learning problem have been developed from the relatively
new field of Distributed Data Mining (Kargupta & Chan,
2000). These include both new algorithms that allow for
distributed learning, as well as new system architectures
that support the actual learning process. One of the most
promising lines of research in this field is Meta-Learning
(Chan & Stolfo, 1993), which is a methodology for deriving
a single global classification model by learning from
multiple local classifiers. A problem with Meta-Learning
and other approaches of this field is that they do not take
into account the uncertainty and ambiguity involved in the
distributed learning environment.