<s>
Evolving	B-Algorithm
classification	I-Algorithm
functions	I-Algorithm
(	O
ECF	O
)	O
,	O
evolving	O
classifier	B-General_Concept
functions	O
or	O
evolving	O
classifiers	B-General_Concept
are	O
used	O
for	O
classifying	O
and	O
clustering	O
in	O
the	O
field	O
of	O
machine	O
learning	O
and	O
artificial	B-Application
intelligence	I-Application
,	O
typically	O
employed	O
for	O
data	B-Algorithm
stream	I-Algorithm
mining	I-Algorithm
tasks	O
in	O
dynamic	O
and	O
changing	O
environments	O
.	O
</s>
