TY - GEN
T1 - Modeling user and topic interactions in social networks using Hawkes processes
AU - Pinto, Julio Cesar Louzada
AU - Chahed, Tijani
N1 - Publisher Copyright:
© Copyright 2015 ICST.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - We present in this paper a framework to model information diffusion in social networks based on linear multivariate Hawkes processes. Our model exploits the effective broadcasting times of information by users, which guarantees a more realistic view of the information diffusion process. The proposed model takes into consideration not only interactions between users but also interactions between topics, which provides a deeper analysis of influences in social networks. We provide an estimation algorithm based on nonnegative matrix factorization techniques, which together with a dimensionality reduction argument is able to discover, in addition, the latent community structure of the social network. We also provide several numerical results of our method.
AB - We present in this paper a framework to model information diffusion in social networks based on linear multivariate Hawkes processes. Our model exploits the effective broadcasting times of information by users, which guarantees a more realistic view of the information diffusion process. The proposed model takes into consideration not only interactions between users but also interactions between topics, which provides a deeper analysis of influences in social networks. We provide an estimation algorithm based on nonnegative matrix factorization techniques, which together with a dimensionality reduction argument is able to discover, in addition, the latent community structure of the social network. We also provide several numerical results of our method.
KW - Hawkes processes
KW - Nonnegative matrix factorization
KW - Social networks
U2 - 10.4108/icst.valuetools.2014.258186
DO - 10.4108/icst.valuetools.2014.258186
M3 - Conference contribution
AN - SCOPUS:84962882980
T3 - Proceedings of the 8th International Conference on Performance Evaluation Methodologies and Tools, VALUETOOLS 2014
SP - 58
EP - 65
BT - Proceedings of the 8th International Conference on Performance Evaluation Methodologies and Tools, VALUETOOLS 2014
PB - ICST
T2 - 8th International Conference on Performance Evaluation Methodologies and Tools, VALUETOOLS 2014
Y2 - 9 December 2014 through 11 December 2014
ER -