To reuse open source code it is necessary to
understand how the software is implemented and how the
software architecture is designed. However, it is not an easy
task because open source typically does not have the design
document which maps features to source code components. In
this paper, we propose a method to find the components
relevant to a feature in open source code. Our solution is a
static approach to recover the relationship between the
software manual and the source code and it is based on
information retrieval technique. In our approach, we build and
analyze a weighted call graph using the similarity values
obtained from the vector space information retrieval.
Experimental application shows that our method is more
robust and is less influenced by cut level than the method of
Zhao et al..