An Analysis Of The Characteristics Of Interdisciplinary Knowledge Structure And Its Knowledge Interaction

The knowledge of interdisciplinary field is accumulating day by day.The research on the characteristics of its knowledge structure and knowledge interaction can reveal the law of knowledge cross innovation from the source and grasp the development core.This study will take the field of geographic information as an example to identify potential research topics from scientific research literature,explore the relationship between topics,increase the author's cluster identification items,and explore the knowledge structure characteristics and knowledge interaction relevance in the whole interdisciplinary field and scientific research clusters from the whole to the part.According to price's formula,1385 papers from 127 authors with more than 6 papers were selected as the core literature collection.Through LDA model training,32 research topics were obtained,and 10 hot topics with high theme intensity were:"urban geographic information service platform","spatiotemporal data model","current situation research","professional teaching and training","geographic information system function development","geographic information service system","multi-source spatiotemporal data fusion","semantic spatial matching" "Basic geographic database "and" geographic information industry ",hot research topics constitute the main structure of knowledge in the field of geographic information.Then combining K-means clustering and multi-dimensional scaling,four core author clusters are finally obtained,and different research directions and knowledge structures in the field are grasped from the author level.Finally,the association rules of the whole literature collection,the literature after the author cluster division and the literature after the author cluster identification column are mined and analyzed.It is found that the subject orientation in the rules also reflects the subject knowledge structure of the research field and the cross connection between different research directions and the subject.The author cluster C is in the same rule in the front and different rule in the back,symbolizing the place There are different branches in the research direction of the construction of Li information service platform,and the research direction of GIS development represented by cluster D of the author is inseparable from the fusion and exchange of "semantic space matching" theme and other relevant knowledge.