Which Features are Learned by CodeBert: An Empirical Study of the BERT-based Source Code Representation Learning

• URL: http://arxiv.org/abs/2301.08427v2
• Date: Thu, 10 Aug 2023 20:37:20 GMT
• Title: Which Features are Learned by CodeBert: An Empirical Study of the BERT-based Source Code Representation Learning
• Authors: Lan Zhang, Chen Cao, Zhilong Wang and Peng Liu
• Abstract summary: We show that current methods cannot effectively understand the logic of source codes. The representation of source code heavily relies on the programmer-defined variable and function names.
• Score: 9.469346910848733
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The Bidirectional Encoder Representations from Transformers (BERT) were proposed in the natural language process (NLP) and shows promising results. Recently researchers applied the BERT to source-code representation learning and reported some good news on several downstream tasks. However, in this paper, we illustrated that current methods cannot effectively understand the logic of source codes. The representation of source code heavily relies on the programmer-defined variable and function names. We design and implement a set of experiments to demonstrate our conjecture and provide some insights for future works.

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