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在分析现有开放文档先导(OAI)资源库更新频率的基础上,通过定义一些变量,对OAI资源库更新频率进行定量和定性分析,提出4种评价更新频率的方法,然后根据更新频率的定性和定量分析得出针对不同更新频率OAI资源库应该使用哪种收割模型,并且给出两种同步模型,对其算法进行描述。最后,解决目前OAI资源库存在的几个问题:①服务可用性;②OAI资源库的同步;③OAI资源库负载;④流控制。
Based on the analysis of the update frequency of OAI repositories, we quantitatively and qualitatively analyze the update frequency of OAI repositories by defining some variables and put forward four methods to evaluate the update frequency. According to the qualitative analysis of update frequency, And quantitative analysis of which harvesting models should be used for OAI repositories with different update frequency, and give two kinds of synchronization models to describe their algorithms. Finally, to solve the existing problems of OAI resources exist several problems: ① service availability; ○ OAI resource synchronization; ③ OAI repository load; ④ flow control.