Safety Monitoring of Expressway Construction Based on Multisource Data Fusion

Table 1

Important functions and functions of some BP Networks.

Function name	Corresponding function
tansig	S-type transfer function
purelin	Linear transfer function
logsig	Logarithmic S-type transfer function
deltatan	Delta function of tansig neurons
deltalog	Delta function of logsig neurons
learnbp	BP learning rules