復(fù)雜網(wǎng)絡(luò)中節(jié)點(diǎn)重要性綜合評(píng)價(jià)方法研究
發(fā)布時(shí)間:2018-08-30 20:57
【摘要】:信息化條件下復(fù)雜網(wǎng)絡(luò)對(duì)節(jié)點(diǎn)的攻擊顯得十分脆弱,發(fā)掘重要性節(jié)點(diǎn)并進(jìn)行保護(hù)逐漸成為研究復(fù)雜網(wǎng)絡(luò)理論的一個(gè)基本問題。針對(duì)以往的單個(gè)評(píng)價(jià)指標(biāo)如度、介數(shù)、聚焦系數(shù)等忽略了節(jié)點(diǎn)在復(fù)雜網(wǎng)絡(luò)中的綜合屬性,不能全面地給出評(píng)價(jià)結(jié)果的不足,提出了一種基于余弦相似度的節(jié)點(diǎn)重要性綜合評(píng)價(jià)方法。上述方法通過計(jì)算各個(gè)節(jié)點(diǎn)的評(píng)價(jià)指標(biāo)向量與理想化節(jié)點(diǎn)指標(biāo)向量的余弦相似度,得出節(jié)點(diǎn)的綜合排序結(jié)果,最終遴選出最佳節(jié)點(diǎn)。實(shí)驗(yàn)結(jié)果表明,上述方法可以較為準(zhǔn)確地評(píng)估節(jié)點(diǎn)的重要性,為研究網(wǎng)絡(luò)的抗毀性提供一定依據(jù)。
[Abstract]:The attack of complex network on nodes is very fragile under the condition of information technology. It is becoming a basic problem to study the theory of complex network to discover the important nodes and protect them. In view of the previous single evaluation index such as degree, medium, focusing coefficient and so on, the comprehensive attributes of nodes in complex networks are ignored, and the shortcomings of evaluation results can not be given comprehensively. This paper presents a comprehensive evaluation method of node importance based on cosine similarity. By calculating the cosine similarity between the evaluation index vector of each node and the idealized node index vector, the comprehensive ranking results of each node are obtained, and the optimal node is finally selected. The experimental results show that the above methods can accurately evaluate the importance of nodes and provide a basis for the study of network survivability.
【作者單位】: 空軍工程大學(xué)信息與導(dǎo)航學(xué)院;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(61573017)
【分類號(hào)】:O157.5
本文編號(hào):2214270
[Abstract]:The attack of complex network on nodes is very fragile under the condition of information technology. It is becoming a basic problem to study the theory of complex network to discover the important nodes and protect them. In view of the previous single evaluation index such as degree, medium, focusing coefficient and so on, the comprehensive attributes of nodes in complex networks are ignored, and the shortcomings of evaluation results can not be given comprehensively. This paper presents a comprehensive evaluation method of node importance based on cosine similarity. By calculating the cosine similarity between the evaluation index vector of each node and the idealized node index vector, the comprehensive ranking results of each node are obtained, and the optimal node is finally selected. The experimental results show that the above methods can accurately evaluate the importance of nodes and provide a basis for the study of network survivability.
【作者單位】: 空軍工程大學(xué)信息與導(dǎo)航學(xué)院;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(61573017)
【分類號(hào)】:O157.5
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