基于滑动窗口的网格实体行为信任评估  

Grid Entity Behavior Trust Evaluation Based on Sliding Window

作　　者：张忠平[1] 王培[1] 徐晓云[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《计算机工程》2011年第8期124-126,共3页Computer Engineering

基　　金：国家自然科学基金资助项目(60773100);河北省教育厅科研计划基金资助项目(2006143)

摘　　要：现有信任评估方法没有考虑行为历史信息记录的时间自衰减性,并存在一些恶意用户以少次数低价值访问换取高信任的情况。为此,在构造时间校正函数基础上,提出一种基于滑动窗口的网格实体行为信任评估方法,能准确计算出实体信任度,客观反映实体行为的真实性,为系统对实体的后续行为控制提供决策依据。Existing evaluation methods do not consider the time decay of behavior history records,and there are some small number of malicious users with less frequency,low-value access for higher confidence.In order to resolves trust issues decay over time,this paper proposes a grid entity behavior evaluation method based on sliding window by constructing a time correction function.This method can make the calculation of trust degree more accurate,timely and objectively reflect the real behavior of entity,and it provides the correct basis for the system in making decision about follow-up behaviors of the entity.

关 键 词：网格实体行为 信任评估 时间校正函数 滑动窗口 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]