基于用户行为综合分析的微博用户影响力评价方法

通过对用户转发、评论和提及三种行为的综合分析,运用统计分析方法就微博用户的不同行为对传播影响力的贡献进行度量,提出一种基于行为权值分配的PageRank算法,对传播影响力大小进行定量的分析。采用微博数据的实验结果表明,该算法比其他传统算法对传播影响力判断的准确性更高,且用户特征中最能反映用户传播影响力大小的是用户转发情况。

基于行为权值的微博用户影响力度量算法

用户影响力度量是目前微博研究的基础和热点方向,为了提高微博传播影响力度量的准确性,提出一种基于行为权值的微博用户影响力度量算法。对网络用户的转发、评论和提及等行为进行分析,将数据输入到最小二乘支持向量机中进行学习找到最合理的权值,并建立传播影响力度量模型,采用具体数据对算法的性能进行仿真测试。结果表明,相对于其他微博用户影响力度量算法,该算法不仅提高了微博用户影响力的度量准确性,而且可以准确刻画各种用户行为对网络传播力贡献。

The Impact of Deforestation in Anambra State： The Ekwusigo Example

It is a fact that demographic and socio-economic developments are exploitatively exerting severe pressure on forest resources in Nigeria. Not only has the economy of the people been severely affected but also the environment has witnessed accelerated soil erosion, especially in Eastern Nigeria. Accordingly, this study set out to explore the environmental and socio-economic impacts of deforestation using an empirical case. Two forested and two deforested sites in Ekwusigo L.G.A of Anambra State were closely studied with respect to deforestation indices. From the data generated, Student＇s t-test was used to attempt a statistical comparison of the forested and deforested sites. The findings indicate that forest cover depletion affected both the canopy openness and the number of non-timber forest products in the area, Finally, the paper stressed the need to maintain a sustainable plant cover while economically harnessing forest resources.