期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于预测分析的时空众包在线任务分配 被引量:4
1
作者 张兴盛 余敦辉 +1 位作者 聂茜婵 袁旭 《计算机工程》 CAS CSCD 北大核心 2019年第6期67-74,共8页
针对时空众包在线任务分配问题,提出任务范围调节算法DMRA与基于预测分析的在线任务分配算法PAMA。DMRA算法以任务位置为中心,根据工人密度动态调整任务的范围。PAMA算法基于历史统计概率,采用贝叶斯分类器预测下一时间戳的对象分布情况... 针对时空众包在线任务分配问题,提出任务范围调节算法DMRA与基于预测分析的在线任务分配算法PAMA。DMRA算法以任务位置为中心,根据工人密度动态调整任务的范围。PAMA算法基于历史统计概率,采用贝叶斯分类器预测下一时间戳的对象分布情况,在此基础上,执行带权二分图最优匹配算法以完成任务分配。实验结果表明,将DMRA算法与PAMA算法相结合,能够提升任务分配的总效用,降低工人的差旅成本,任务分配性能优于贪心算法与随机阈值算法。 展开更多
关键词 时空众包 在线任务分配 分配总效用 工人差旅成本 贝叶斯分类预测 统计预测
下载PDF
Social Network Information Propagation Model Based on Individual Behavior 被引量:9
2
作者 Lejun Zhang Hongjie Li +1 位作者 Chunhui Zhao Xiaoying Lei 《China Communications》 SCIE CSCD 2017年第7期78-92,共15页
In this paper, we discuss building an information dissemination model based on individual behavior. We analyze the individual behavior related to information dissemination and the factors that affect the sharing behav... In this paper, we discuss building an information dissemination model based on individual behavior. We analyze the individual behavior related to information dissemination and the factors that affect the sharing behavior of individuals, and we define and quantify these factors. We consider these factors as characteristic attributes and use a Bayesian classifier to classify individuals. Considering the forwarding delay characteristics of information dissemination, we present a random time generation method that simulates the delay of information dissemination. Given time and other constraints, a user might not look at all the information that his/her friends published. Therefore, this paper proposes an algorithm to predict information visibility, i.e., it estimates the probability that an individual will see the information. Based on the classification of individual behavior and combined with our random time generation and information visibility prediction method, we propose an information dissemination model based on individual behavior. The model can be used to predict the scale and speed of information propagation. We use data sets from Sina Weibo to validate and analyze the prediction methods of the individual behavior and information dissemination model based on individual behavior. A previously proposedinformation dissemination model provides the foundation for a subsequent study on the evolution of the network and social network analysis. Predicting the scale and speed of information dissemination can also be used for public opinion monitoring. 展开更多
关键词 social network information propagation individual behavior propagation delay
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部