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Human Metabolome Database

Description: A freely available electronic database containing detailed information about small molecule metabolites found in the human body
Cross-references: https://github.com/NCATSTranslator/Translator-All/wiki/HMDB
Synonyms: HMDB

Edge Categories Distribution

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Epistemic Robustness

Epistemic Robustness measures the provenance quality of edges from this knowledge source, using Knowledge Level and Agent Type from the Biolink Model to assess evidence strength and reliability. Higher scores indicate stronger evidence and greater manual curation.
1.00
Average Epistemic Score
1.00
Knowledge Level Score
Most common: Knowledge Assertion
1.00
Agent Type Score
Most common: Manual Agent

2,805,513
Edges Included
0
Edges with Missing Provenance
(Both Knowledge Level and Agent Type not provided)

Edge Type Validation

This section shows the validation of edge types in this knowledge source against the recognized biolink schema patterns.
1,877,573
Recognized Edges
( 77.0 %)
561,450
Unrecognized Edges
( 23.0 %)

ABox / TBox Classification

The TBox-to-ABox balance reflects how much a knowledge graph emphasizes abstract schema versus concrete instances—too much of either can hinder effective learning and reasoning.

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1,567,149
ABox Edges
( 64.3 %)
2,386
TBox Edges
( 0.1 %)
869,488
Undefined
( 35.6 %)