Global Research Hotspots in Venous Thromboembolism Anticoagulation: A Knowledge-Map Analysis from 2012 to 2021

Figure 6

Matrix visualization map of high-frequency keywords biclustering in documents of VTE anticoagulant. Row labels are high-frequency keywords, and column labels are source documents. The left dendrogram represents the connection between high-frequency keywords, and the upper dendrogram represents the connection between source documents. Black horizontal lines separate clusters. Color represents the value in the original data matrix, and the deeper red color reveals a higher frequency of keywords.