Autonomous Classification and Decision-Making Support of Citizen E-Petitions Based on Bi-LSTM-CNN

Table 1

Advanced studies on text classification techniques.

Model	Data set	Training set	Classes	Text length	Vocab
SVM [11]	Newspaper	250	2	500	11672
KNN [12]	Newspaper	4731	87	1000	10000
CNN [15]	Customer reviews	12700	3	16	13612
CNN [26]	Twitter	1600000	2	60	76643
LSTM [17]	Newspaper articles	8552	2	339	-
Bi-LSTM [18]	Service documents	9121	10	128	-
CNN + LSTM [6]	Clinical notes	26363	50	200	49354
LSTM-CNN [27]	Newspaper	50000	10	100	-