Adding control-flow and data-flow edges to abstract syntax trees helps some graph neural networks but not others, and the best model (GMN) works well even on plain syntax trees.
Comparison and evaluation of clone detection techniques with different code representa- tions,
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AST-Enhanced or AST-Overloaded? The Surprising Impact of Hybrid Graph Representations on Code Clone Detection
Adding control-flow and data-flow edges to abstract syntax trees helps some graph neural networks but not others, and the best model (GMN) works well even on plain syntax trees.