样本不平衡下的空中群组意图识别方法

doi:10.12305/j.issn.1001-506X.2022.12.19

Abstract

Abstract:

To solve the problem of air group intention recognition under the condition of imbalance samples, a bidirectional gated recurrent unit network air group intention recognition method based on the attention mechanism is proposed. The state information of the air group is encoded into timing features. Prior information is used to encapsulate into sample labels. An improved borderline-synthetic minority oversampling method is proposed to generate a suitable sample set. The timing features of aerial group targets can be deeply extracted by bidirectional mechanism. Attention mechanism is introduced to improve the network's ability to capture more discriminative features by assigning weights to deep information. Experiment simulation results show that proposed method has better classification effect and higher training efficiency for the intent recognition problem of the air group in the case of imbalance samples.

Key words: intention recognition, bi-gated recurrent unit (BiGRU), attention mechanism, imbalance samples

CLC Number:

E824

Yutang MA, Peng SUN, Jieyong ZHANG, Peng WANG, Yunfei YAN, Liang ZHAO. Air group intention recognition method under imbalance samples[J]. Systems Engineering and Electronics, 2022, 44(12): 3747-3755.

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References 30

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参数	取值
损失函数	categorical_crossentroy
学习率	0.001
隐藏层节点数	128, 64, 64
批大小	128
训练周期	100
输入形状	12×11
优化器	Adam

样本类型	准确率/%
样本类型	原始样本	合成样本
攻击	60.00	62.33
监视	32.50	33.72
撤退	100	99.58

意图类型	攻击	佯攻	撤退	侦察	监视	电子干扰
攻击	9	6	0	0	0	0
佯攻	0	223	0	0	0	0
撤退	0	0	137	0	0	0
侦察	0	0	0	786	0	0
监视	0	0	0	27	13	0
电子干扰	0	0	0	0	0	399

意图类型	攻击	佯攻	撤退	侦察	监视	电子干扰
攻击	13	1	0	0	0	1
佯攻	2	221	0	0	0	0
撤退	0	0	137	0	0	0
侦察	0	0	0	774	12	0
监视	0	0	0	9	31	0
电子干扰	0	0	0	0	0	399

模型	隐藏层节点数	学习率	迭代轮次
BiGRU-Attention	128, 64, 64	0.001	100
SAE	256, 128, 128	0.001	200
DNN	50, 100, 100, 50	0.001	100
LSTM	128, 64, 64	0.001	200

Air group intention recognition method under imbalance samples

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评估指标		意图
评估指标		攻击	佯攻	撤退	侦察	监视	电子干扰
精确率	BiGRU-Attention	86.67	99.55	100	98.85	72.09	99.75
	GRU	48.00	99.06	100	98.47	65.91	100
	BiGRU	72.22	99.10	100	98.85	68.89	100
	GRU-Attention	68.42	99.54	100	98.84	61.82	100
召回率	BiGRU-Attention	86.67	99.10	100	98.47	77.50	100
	GRU	80.00	94.17	100	98.09	72.5	100
	BiGRU	86.67	98.21	99.27	98.22	77.5	100
	GRU-Attention	86.67	97.31	100	97.33	85	99.50
F1-score	BiGRU-Attention	86.67	99.33	100	98.66	74.70	99.87
	GRU	60	96.55	100	98.28	69.05	100
	BiGRU	78.79	98.65	99.63	98.53	72.94	100
	GRU-Attention	76.47	98.41	100	98.08	71.58	99.75

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