Fig. 2: Composition and knowledge retrieval capabilities of the MDKG.
From: Large language model powered knowledge graph construction for mental health exploration

a Distribution of relation types and entity pairs in the literature-based Mental Disorders Knowledge Graph (MDKG). b Distribution of MDKG triplets across curated biomedical resources (e.g., DrugBank, DisGeNET, UMLS), model predictions, and other sources. c Example output of knowledge retrieval from MDKG for major depressive disorder (MDD), showing interconnected concepts such as physiological abnormalities, behavioral features, genetic variants, and therapeutic options. The source data are provided as a Source Data file.