Controlled Vocabulary – Taxonomy, Thesaurus & Ontology
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Controlled Vocabulary – Taxonomy, Thesaurus & Ontology

Controlled vocabularies such as taxonomy, thesaurus and ontology are the main terminological resources that play a key role in developing the information architecture for online portals and search platforms.

Taxonomies provide the hierarchical categorization and classification of content into subject categories and also help to categorize and classify products and brands represented in online directories and product catalogues.

Thesaurus and lexicon provide the expanded terms of the basic taxonomic classification to incorporate user variants and improve the recall efficiency of the search and retrieval process.

Ontology provides the semantic description for the taxonomy terms and establishes the relationship between categories to facilitate conceptual search and natural language queries.

Scope has developed taxonomy, thesaurus, lexicon and ontology for Medical and Life Science domains. Scope delivers the controlled vocabularies in customizable XML, SKOS, RDF and OWL to enable easy integration with clients’ content environment. To meet the specific content needs of clients, we also provide customized solutions in the following areas:

  • Taxonomy development and maintenance
  • Taxonomy Mapping/ Integration
  • Thesaurus and Lexicon development
  • Taxonomy expansion
  • Development of niche taxonomies for medical specialties and consumer health portals.
  • Automated content mining and vertical search solutions through the deployment of taxonomy and ontology.

Taxonomy Development/Maintenance

Scope has developed hierarchical taxonomy for various domains, with a maximum of four levels of sub classification for each top-level concept. Based on the characteristics of a domain, Scope will develop a theoretical framework for building the taxonomy for the domain under the guidance of subject matter experts for the respective domains. Scope then will be validate the taxonomy structure with the industrial standard for classifications.

Scope can also develop broad-level concepts as facets with a hierarchical taxonomy. These facets with a taxonomic structure will be domain independent and will be based on significant common attributes of materials, products and services that could cut across domains. The facets will be further classified to more specific attributes, by developing a two to three level hierarchical taxonomy of facets, to help users to bridge the different domains using common concepts and also further filter the specific attributes of such concepts across different domains.

Further, scope can update existing taxonomies and document metadata for changes in term meaning or usage. Scope can conduct periodic assessments (preferably every six months or as required by clients) to identify any change in the meaning or usage of terms.

Thesaurus Construction

Scope has the expertise to developing thesauri as per the international standards for thesaurus constructions such as ANSI/ NISO Z39.19-2005 Guidelines, to facilitate both pre-coordinate and post-coordinate indexing of scholarly articles.

Some of the unique features of Scope's thesaurus development methodology are:

  • Multilevel Broader and Narrower Terms Hierarchical Displays
  • Construction of Equivalent Terms – Lexicon Development
    • Word variants (synonyms)
    • Spelling variants
    • Morphological variants
    • Language variants
  • Construction of Associated Terms (Related Terms)
  • Ontology Development

    Ontologies, which define formal specifications of terms/concepts in a domain and their relationships, have become common on the World-Wide Web. Scope has a rich resource of Subject Matter Experts and Ontology Consultants to develop ontology for any vertical and its sub domains.

    Scope's pre-built and customized ontology can be used in automated text mining and semantic processing applications for providing a search and retrieval platform, more advanced than the "Google" type keyword based search features. Some of the key features of Scope's ontology development are:

    • Conceptual definition for each node
    • Disambiguation of homonyms