TY - GEN
T1 - Online diffusion source detection in social networks
AU - Wang, Haishuai
AU - Zhang, Peng
AU - Chen, Ling
AU - Liu, Huan
AU - Zhang, Chengqi
N1 - Publisher Copyright: © 2015 IEEE.
PY - 2015/9/28
Y1 - 2015/9/28
N2 - In this paper we study a new problem of online diffusion source detection in social networks. Existing work on diffusion source detection focuses on offline learning, which assumes data collected from network detectors are static and a snapshot of network is available before learning. However, an offline learning model does not meet the needs of early warning, real-time awareness, and real-time response of malicious information spreading in social networks. In this paper, we combine online learning and regression-based detection methods for real-time diffusion source detection. Specifically, we propose a new ℓ1 non-convex regression model as the learning function, and an Online Stochastic Sub-gradient algorithm (OSS for short). The proposed model is empirically evaluated on both synthetic and real-world networks. Experimental results demonstrate the effectiveness of the proposed model.
AB - In this paper we study a new problem of online diffusion source detection in social networks. Existing work on diffusion source detection focuses on offline learning, which assumes data collected from network detectors are static and a snapshot of network is available before learning. However, an offline learning model does not meet the needs of early warning, real-time awareness, and real-time response of malicious information spreading in social networks. In this paper, we combine online learning and regression-based detection methods for real-time diffusion source detection. Specifically, we propose a new ℓ1 non-convex regression model as the learning function, and an Online Stochastic Sub-gradient algorithm (OSS for short). The proposed model is empirically evaluated on both synthetic and real-world networks. Experimental results demonstrate the effectiveness of the proposed model.
KW - Bismuth
KW - Delays
KW - Estimation
KW - RNA
KW - Real-time systems
UR - http://www.scopus.com/inward/record.url?scp=84951092450&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84951092450&partnerID=8YFLogxK
U2 - 10.1109/IJCNN.2015.7280455
DO - 10.1109/IJCNN.2015.7280455
M3 - Conference contribution
T3 - Proceedings of the International Joint Conference on Neural Networks
BT - 2015 International Joint Conference on Neural Networks, IJCNN 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - International Joint Conference on Neural Networks, IJCNN 2015
Y2 - 12 July 2015 through 17 July 2015
ER -