Abstract
We propose the Concept Keyword Term Frequency/Inverse Document Frequency (ckTF/IDF) method as a novel technique to efficiency mine concept keywords from identifiers in large software projects. ckTF/IDF is suitable for mining concept keywords, since the ckTF/IDF is more lightweight than the TF/IDF method, and the ckTF/IDF's heuristics is tuned for identifiers in programs.We then experimentally apply the ckTF/IDF to our educational operating system udos, consisting of around 5,000 lines in C code, which produced promising results; the udos's source code was processed in 1.4 seconds with an accuracy of around 57%. This preliminary result suggests that our approach is useful for mining concept keywords from identifiers, although we need more research and experience.
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