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arXiv 1702.02808cs.SIcs.DLphysics.soc-ph
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基于链接社区局部评价的重叠主题模因搜索

Memetic search for overlapping topics based on a local evaluation of link communities

Frank Havemann, Jochen Gläser, Michael Heinz

摘要:

尽管最近的进展领域划定的方法,文献计量学家仍然不知道在何种程度上,他们的主题检测算法重建“地面真相”,即在科学文献的主题结构。在本文中,我们展示了一种新的方法来描绘的主题结构,试图匹配的算法,理论推导和经验观察的属性所有的主题结构有共同的。我们集群引用链接,而不是出版物节点,主要使用本地信息和搜索社区的链接从种子子图,以允许普遍重叠的主题。我们评估一组新的成本函数的链接,并假设成本景观中的局部极小值对应于链接社区。因为这个成本景观有许多局部最小值,我们将有效社区定义为在一定范围内具有最小值的社区。由于找到所有有效的社区是不可能的大型网络,我们设计了一个模因算法,结合概率进化策略与确定性的局部搜索。我们将我们的方法应用于2010年发表的约15,000篇天文学和天体物理学论文及其引用来源的网络,以及通过直接引用链接的约100,000篇天文学和天体物理学论文(2003- 2010年出版)的网络。

英文摘要:

In spite of recent advances in field delineation methods, bibliometricians still don't know the extent to which their topic detection algorithms reconstruct `ground truths', i.e. thematic structures in the scientific literature. In this paper, we demonstrate a new approach to the delineation of thematic structures that attempts to match the algorithm to theoretically derived and empirically observed properties all thematic structures have in common. We cluster citation links rather than publication nodes, use predominantly local information and search for communities of links starting from seed subgraphs in order to allow for pervasive overlaps of topics. We evaluate sets of links with a new cost function and assume that local minima in the cost landscape correspond to link communities. Because this cost landscape has many local minima we define a valid community as the community with the lowest minimum within a certain range. Since finding all valid communities is impossible for large networks, we designed a memetic algorithm that combines probabilistic evolutionary strategies with deterministic local searches. We apply our approach to a network of about 15,000 Astronomy & Astrophysics papers published 2010 and their cited sources, and to a network of about 100,000 Astronomy & Astrophysics papers (published 2003--2010) which are linked through direct citations.

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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