Abstract
Mapping knowledge domain (MKD) is an important application in bibliometrics, which is a method of visually presenting and explaining newly developed interdisciplinary scientific fields using data mining, information analysis, scientific measurement, and graphic rendering. This study combines applied mathematics, visual analysis technology, information science, and scientometrics to systematically analyze the development status, research distribution, and future trend of the heterogeneous traffic flow by using the MKD software tools VOSviewer and CiteSpace. Based on the MKD and Bibliometrics approaches, 4709 articles have been studied, which were published by Science Citation Index Expanded (SCIE) and Social Sciences Citation Index (SSCI) from 2004 to 2021 in the field of heterogeneous traffic flows. Firstly, this paper presents the annual numbers of articles, origin countries, main research organizations, and groups as well as the source journals on heterogeneous traffic flow studies. Then, cocitation analysis is used to divide heterogeneous traffic flow into three main research directions, which include “heterogeneous traffic flow model,” “traffic flow capacity analysis,” and “traffic flow stability analysis.” The keyword cooccurrence analysis is applied to identify five dominant clusters: “modeling and optimization methods,” “traffic flow characteristics analysis,” “driving behavior analysis,” “simulation experiment,” and “policies and barriers.” Finally, burst keywords were studied according to the publication date to present more clearly the change of research focus and direction over time.
Highlights
Mapping knowledge domain (MKD) is an important application in bibliometrics, which is a method of visually presenting and explaining newly developed interdisciplinary scientific fields using data mining, information analysis, scientific measurement, and graphic rendering. is study combines applied mathematics, visual analysis technology, information science, and scientometrics to systematically analyze the development status, research distribution, and future trend of the heterogeneous traffic flow by using the MKD software tools VOSviewer and CiteSpace
Bibliometrics is an interdisciplinary science that uses mathematical and statistical methods to quantitatively analyze relevant articles, mainly studying the quantitative relationship of the article [10], journal information sources [11], author relationship [12], and keywords [13]
Document cocitation analysis refers to the statistics of the number of two documents simultaneously cited by one or more documents, to conduct network analysis and cluster analysis on the cited documents, to analyze the knowledge base of the specific subject represented by these documents [17]. e knowledge base of this field is constructed by quoting articles, and the research frontier of a certain field is formed by analyzing the knowledge base
Summary
Mapping knowledge domain (MKD) is an important application in bibliometrics, which is a method of visually presenting and explaining newly developed interdisciplinary scientific fields using data mining, information analysis, scientific measurement, and graphic rendering. is study combines applied mathematics, visual analysis technology, information science, and scientometrics to systematically analyze the development status, research distribution, and future trend of the heterogeneous traffic flow by using the MKD software tools VOSviewer and CiteSpace. Is study combines applied mathematics, visual analysis technology, information science, and scientometrics to systematically analyze the development status, research distribution, and future trend of the heterogeneous traffic flow by using the MKD software tools VOSviewer and CiteSpace. This paper presents the annual numbers of articles, origin countries, main research organizations, and groups as well as the source journals on heterogeneous traffic flow studies. Some article reviews have studied the related content of heterogeneous traffic flow, previous article reviews have adopted qualitative rather than quantitative methods to conduct research, which largely relies on the author’s experience and subjective judgment in this field, requiring the author to accumulate, summarize, and refine in this field for a long time. The bibliometrics method was used to review the article. e WOS platform was used to search 4709 related articles published in the field of heterogeneous traffic flow in the recent 17 years (2004–2021). e following tasks were completed: which countries/regions are the most important research results; what is the collaboration between the main authors in the research area; what are the core publications in the research area; what are the most influential research results in the field of heterogeneous traffic flow research; which are the most active research field of heterogeneous traffic flow and its present situation and deficiency? Research and review related aspects from a new perspective clarify the development context of the heterogeneous traffic flow field, identify key topics and research progress in domestic and foreign research, find the shortcomings of current research, and provide reference and comparison for researchers
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