citespace使用指导.ppt

CiteSpace Quick Guide 1.2Chaomei ChenDrexel UniversityEmail: chaomei.chen@/~cchen/citespace Outline 0. Glossary Where to get a copy of CiteSpace? How to prepare data files? What information in bibliographic data is used by CiteSpace? Getting started with CiteSpace What types of networks can CiteSpace produce? Fine tune configurations Interact with visualized networks Control visual attributes The use of Pathfinder EM clustering Further reading Resource Links 0. Glossary Betweenness centrality – a metric of a node in a network that measures how likely an arbitrary shortest path in the network will go through the node. Burst terms – single or multi-word phrases extracted from the title, abstract, or other fields of a bibliographic record and the frequency of the term bursts, i.e. sharply increases, over a period of time. Citation – an instance that a publication references to another publication. Citation half-life – the number of years that a publication receives half of its citations since its publication. Citation tree-rings – outwards growing rings of a node to depict its time series of citations. The thickness of a ring is proportional to the citations in the corresponding year. Cluster view – a network is visualized in a modified spring-embedder node placement algorithm. Co-authors – authors who appear in the author field of the same bibliographic record. Co-citation – an instance in which two items, such as authors, documents, or journals, that are cited by a publication. Color map – a spectrum of colors used by CiteSpace to depict temporal order of observations. EM clustering – Expectation Maximization (EM) clustering nodes based on various attributes such as citations, citation half-life, and betweenness centrality. The use of temporal attributes can help the visualization of emerging trends. MeSH terms – Medical Subject Heading terms are a set of controlled vocabulary compiled by the National Library of Medicine. CiteSpace shows MeSH terms assign