Grouped Network Vector Autoregression
Grouped Network Vector Autoregression
复制标题
分组网络向量自回归
DOI:
10.5705/ss.202017.0533
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发表时间:
2020
影响因子:
1.4
通讯作者:
Rui Pan
中科院分区:
文献类型:
--
作者:
Xuening Zhu;Rui Pan
Time series analyses are often used to model a continuous response for all individuals at equally spaced time points. With the rapid advance of social network sites, network data are becoming increasingly available. The network vector autoregression (NAR) model incorporates the network information among individuals. The response of each individual can be explained by its lagged value, the average of its neighbors, and a set of node-specific covariates. However, all individuals are assumed to be homogeneous because they share the same autoregression coefficients. To express individual heterogeneity, we develop a grouped NAR (GNAR) model. Individuals in a network can be classified into different groups characterized by sets of parameters. The strict stationarity of the GNAR model is established. Two estimation procedures are developed, as well as the asymptotic properties of the proposed model. Numerical studies are conducted to evaluate the finite-sample performance of our proposed methodology. Lastly, two real-data examples are presented, based on studies on user posting behavior on the Sina Weibo platform and on air pollution patterns (especially PM2.5) in mainland China, respectively. Statistica Sinica: Preprint doi:10.5705/ss.202017.0533
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DOI:
10.4018/978-1-7998-6713-5.ch008
发表时间:
2021
期刊:
Advances in Human Resources Management and Organizational Development
影响因子:
--
作者:
Yuh-Wen Chen
通讯作者:
Yuh-Wen Chen
影响因子:
1.6
作者:
C. Streeter;D. F. Gillespie
通讯作者:
C. Streeter;D. F. Gillespie
DOI:
10.1007/978-3-319-32010-6_187
发表时间:
2022-05
期刊:
Encyclopedia of Big Data
影响因子:
--
作者:
Magdalena Bielenia-Grajewska
通讯作者:
Magdalena Bielenia-Grajewska
DOI:
--
发表时间:
2006-11
期刊:
--
影响因子:
--
作者:
Miguel A. Juárez;M. Steel
通讯作者:
Miguel A. Juárez;M. Steel
DOI:
10.1007/978-3-662-04172-7_5
发表时间:
1991
期刊:
--
影响因子:
--
作者:
L. Saulis;V. Statulevičius
通讯作者:
L. Saulis;V. Statulevičius