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Taxonomy - a system that organizes things and concepts in groups based on their common characteristics and/or differences.Subject heading list - a list of terms describing subjects in information system.Classification schema - a system that based primarily on classifying things or concepts into groups or classes with a detailed explanation of those classification methods.Thesaurus - a type of controlled vocabulary used in information systems that organizes concepts in hierarchical and/or associative relationships and provides their semantic definitions.There are many different types of controlled vocabularies, the most common among them are: It typically includes preferred and variant terms and has a defined scope or describes a specific domain.” (Harpring, P., 2010) “A controlled vocabulary is an organized arrangement of words and phrases used to index content and/or to retrieve content through browsing or searching.
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Patricia Harpring 1 introduced the following definition of controlled vocabulary (CV): Using controlled vocabularies the resources can be queried, retrieved, analysed and linked to other relevant information objects. These data descriptors are used to distinguish and define the characteristics of knowledge resources in a specific domain. The concepts/terms are data descriptors related to each other via explicit relationships (hierarchical or associative). #Introduction #What are Controlled Vocabularies?Ĭontrolled vocabularies are knowledge organization systems that contain (optionally) structured set of concepts/terms for organizing and classifying data in order to ensure its future access and retrieval.