Similar to AGROVOC

Roslin Institute

DAFIF

NASA/IPAC Extragalactic Database

World Register of Marine Species

Knowledge representation and reasoning

C4 model

ERIL

HCalendar

Is-a

Semantic network

Visualization (graphics)

Philosophy of information

Type–token distinction

Knowledge engineering

Knowledge base

Data and information visualization

Digital curation

Data dictionary

Contour line

Topic map

Hashtag

Findability

Faceted classification

Document classification

Vector space model

Microformat