Get flash to fully experience Pearltrees
Concept clusters Bibliometrics Documents Mediating (Knowledge & Information intermediating) Information retrieval (IR) Information science
Simple Knowledge Organization System ( SKOS ) is a family of formal languages designed for representation of thesauri , classification schemes , taxonomies , subject-heading systems , or any other type of structured controlled vocabulary . SKOS is built upon RDF and RDFS , and its main objective is to enable easy publication of controlled structured vocabularies for the Semantic Web . SKOS is currently developed within the W3C framework. [ edit ] History [ edit ] DESIRE II project (1997–2000) The most direct ancestor to SKOS was the RDF Thesaurus work undertaken in the second phase of the EU DESIRE project [ 1 ] [ citation needed ] .
In computer science and information science , an ontology formally represents knowledge as a set of concepts within a domain , and the relationships between pairs of concepts. It can be used to model a domain and support reasoning about entities. In theory, an ontology is a "formal, explicit specification of a shared conceptualisation". [ 1 ] An ontology renders shared vocabulary and taxonomy which models a domain with the definition of objects/concepts, as well as their properties and relations. [ 2 ] Ontologies are the structural frameworks for organizing information and are used in artificial intelligence , the Semantic Web , systems engineering , software engineering , biomedical informatics , library science , enterprise bookmarking , and information architecture as a form of knowledge representation about the world or some part of it. The creation of domain ontologies is also fundamental to the definition and use of an enterprise architecture framework . [ edit ] Overview
Semantic tool A semantic tool is a tool that provides semantic information, that is, information about the meaning of words and other symbols as well as relations between symbols and concepts ( semantic relations ). Dictionaries, online thesauri, ontologies and classifications may be considered examples of semantic tools, i.e. tools that help searchers find synonyms, disambiguate word senses, find broader or narrower terms, or, generally, identify different semantic relations.
Cladistics ( Ancient Greek : κλάδος , klados , "branch") is an approach to classification in which items are grouped together based on whether or not they have one or more shared unique characteristics that come from the group's last common ancestor and are not present in more distant ancestors. Therefore, members of the same group are thought to share a common history and are considered to be more closely related. [ 1 ] [ 2 ] [ 3 ] [ 4 ] The original method for cladistic analysis and the school of taxonomy derived from it originated in the work of the German entomologist Willi Hennig , who referred to it as "phylogenetic systematics" (also the title of his 1966 book); the use of the terms cladistics and clade was popularized by other researchers.