Abbreviation	Definition
AE	Autoencoder
AIDS	Anomaly-based intrusion detection system
ANN	Artificial neural network
B-FL	Blockchain federated learning
CFL	Clustered federated learning
CNN	Convolutional neural network
DT	Decision tree
DL	Deep learning
DDoS	Distributed denial of service
DoS	Denial of service
D2D	Device-to-device
FL	Federated learning
HIDS	Host-Based Intrusion Detection System
IDS	Intrusion detection system
IoT	Internet of Things
IoV	Internet of vehicle
KNN	K-nearest neighbor
LSTM	Long–short-term memory
ML	Machine learning
NB	Naïve Bayes
NIDS	Network-Based Intrusion Detection System
PCA	Principal component analysis
RF	Random forest
RL	Reinforcement learning
RNN	Recurrent neural network
SGD	Stochastic gradient descent
SIDS	Signature-based intrusion detection system
SVM	Support vector machine
TL	Transfer learning