Fig. 4

The author co-occurrence knowledge map of the human gastrointestinal microbiome during 2010–2021. The connection between nodes represents the cooperation between authors, and the width of the connection represents the strength of cooperation. The color of the connection represents the author’s first cooperation time. After the network is generated, the author’s cooperation will form several natural clusters. The author cooperation within the cluster is close, and the author cooperation between each class is less [28]