Gaokao has been considered as the gatekeeper of intergenerational class reproduction in today’s slowing social mobility in China.In order to bolster the fairness of Gaokao,the Policy of Bonus Scores for Ethnic Minori...Gaokao has been considered as the gatekeeper of intergenerational class reproduction in today’s slowing social mobility in China.In order to bolster the fairness of Gaokao,the Policy of Bonus Scores for Ethnic Minority Candidates(PBSEMC)has been issued,whose,however,effectiveness in promoting upward social class has not been adequately empirically explored.The difference-in-differences(DID)analysis based on cross-sectional data,which is distinct from the traditional DID analysis paradigm,was implemented to assess the Reform of PBSEMC in the Guangxi Zhuang Autonomous Region in 1988.The results showed that PBSEMC had a significant and positive impact on the social classes of ethnic minorities,and gender,residence type and occupation type were also relevant to social class,aligning with the previous literature.The PBSEMC is effective in improving the social classes of ethnic minorities.However,the PBSEMC policy should be made more precise,in order to benefit the candidates who are in genuine need of assistance.展开更多
Short messages are an important part of social media network.Besides traditional communications,short messages can also be used for education,entertainment and even business.Nowadays,much work has been devoted to min...Short messages are an important part of social media network.Besides traditional communications,short messages can also be used for education,entertainment and even business.Nowadays,much work has been devoted to mining useful information and knowledge from short messages via classification and clustering approaches.However,in many situations,it is vital to identify some influential users whose messages will result in a large amount of forwarding,these users are called seed users.In this paper,studies on the forwarding behavior of mobile phone users are carried out first,then,a directed graph-based short message forwarding model is setup,together with a“Reverse PageRank”scoring policy.Finally,the forwarding model and scoring policy have been applied to a real short message record dataset from some telecom operator.By some exploratory data analysis of the dataset,parameters of the forwarding model are determined.Experimental results show that the model and the scoring policy are effective in finding out seed users.展开更多
基金supported by National Social Science Foundation(21BZZ021).
文摘Gaokao has been considered as the gatekeeper of intergenerational class reproduction in today’s slowing social mobility in China.In order to bolster the fairness of Gaokao,the Policy of Bonus Scores for Ethnic Minority Candidates(PBSEMC)has been issued,whose,however,effectiveness in promoting upward social class has not been adequately empirically explored.The difference-in-differences(DID)analysis based on cross-sectional data,which is distinct from the traditional DID analysis paradigm,was implemented to assess the Reform of PBSEMC in the Guangxi Zhuang Autonomous Region in 1988.The results showed that PBSEMC had a significant and positive impact on the social classes of ethnic minorities,and gender,residence type and occupation type were also relevant to social class,aligning with the previous literature.The PBSEMC is effective in improving the social classes of ethnic minorities.However,the PBSEMC policy should be made more precise,in order to benefit the candidates who are in genuine need of assistance.
基金This work is supported by the Chinese National Science Foundation(No.11171117).
文摘Short messages are an important part of social media network.Besides traditional communications,short messages can also be used for education,entertainment and even business.Nowadays,much work has been devoted to mining useful information and knowledge from short messages via classification and clustering approaches.However,in many situations,it is vital to identify some influential users whose messages will result in a large amount of forwarding,these users are called seed users.In this paper,studies on the forwarding behavior of mobile phone users are carried out first,then,a directed graph-based short message forwarding model is setup,together with a“Reverse PageRank”scoring policy.Finally,the forwarding model and scoring policy have been applied to a real short message record dataset from some telecom operator.By some exploratory data analysis of the dataset,parameters of the forwarding model are determined.Experimental results show that the model and the scoring policy are effective in finding out seed users.
