  Clone group mapping has a very important significance in the evolution of
code clone. The topic modeling techniques were applied into code clone firstly
and a new clone group mapping method was proposed. The method is very effective
for not only Type-1 and Type-2 clone but also Type-3 clone .By making full use
of the source text and structure information, topic modeling techniques
transform the mapping problem of high-dimensional code space into a
low-dimensional topic space, the goal of clone group mapping was indirectly
reached by mapping clone group topics. Experiments on four open source software
show that the recall and precision are up to 0.99, thus the method can
effectively and accurately reach the goal of clone group mapping.

Software Engineering