“…Different from these techniques, D2C uses sequential pattern mining to aid the extraction of constraints from API documents to guide input generation for testing DL libraries. Testing DL models: Many fuzzing techniques test the robustness of DL models instead of DL libraries by finding adversarial inputs (e.g., images or natural language texts) for the models [23,28,31,39,43,44,60,63,64,66,68,71,77,79]. Testing DL models alone is insufficient, as DL libraries contain bugs [32,33,51,73,74], which hurt the accuracy and speed of the entire DL system [51].…”