[Retracted] SFN: A Novel Scalable Feature Network for Vulnerability Representation of Open-Source Codes

Table 9

Differences between proposed methods.

Methods	Distinction
SFN + Bi-LSTM	The proposed method
SFN(CNN) + Bi-LSTM	In the SFN feature extraction module, all feature extraction layers are replaced by CNN
Bi-LSTM + Bi-LSTM	SFN feature extraction module replaced with Bi-LSTM network
SFN + DNN	The Bi-LSTM is replaced with a fully connected network in the representation learning module
SFN + SVM	The Bi-LSTM is replaced with a Multi-Layer Perceptron in the representation learning module