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arXiv 1503.02872physics.soc-phcs.SIphysics.data-an
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基于相似性指标的链路预测精度检验--以WS和BA模型为例

Accuracy Test for Link Prediction in terms of Similarity Index: The Case of WS and BA Models

Min-Woo Ahn, Woo-Sung Jung

摘要:

链路预测是一种利用给定网络的拓扑信息来推断网络中缺失链路的技术,以往的链路预测研究主要集中在提高给定经验系统的性能上,而对网络模型的链路预测研究较少。因此,在本文中,我们将链接预测应用于两个网络模型:Watts-Strogatz(WS)模型和Barabási-Albert(BA)模型。我们试图通过网络模型更好地理解准确性与每个网络参数(平均度,节点数和重新布线概率WS模型)之间的关系。使用六个相似性指标,精度和ROC曲线下面积(AUC)值作为准确性度量。我们观察到平均程度和准确性之间的正相关性,以及AUC值的大小独立性。

英文摘要:

Link prediction is a technique that uses the topological information in a given network to infer the missing links in it. Since past research on link prediction has primarily focused on enhancing performance for given empirical systems, negligible attention has been devoted to link prediction with regard to network models. In this paper, we thus apply link prediction to two network models: The Watts-Strogatz (WS) model and Barabási-Albert (BA) model. We attempt to gain a better understanding of the relation between accuracy and each network parameter (mean degree, the number of nodes and the rewiring probability in the WS model) through network models. Six similarity indices are used, with precision and area under the ROC curve (AUC) value as the accuracy metrics. We observe a positive correlation between mean degree and accuracy, and size independence of the AUC value.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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