Since the Simple Knowledge Organization System SKOS specification and its SKOS eXtension for Labels SKOS XL became formal W3C recommendations in 2009, a serious number of widespread Knowledge Organization Systems KOS including thesauri, classification schemes, name gurus, and lists of codes and terms, produced before the arrival of the ontology wave have made their journeys to join the Semantic Web mainstream. This paper uses “LOD KOS” as an umbrella term to refer to all of the value vocabularies and lightweight ontologies within the Semantic Web framework. The paper adds a top level view of what the LOD KOS stream has brought to a whole lot of communities and users. These are not limited to the colonies of the cost vocabulary constructors and providers, nor the catalogers and indexers who’ve a long historical past of making use of the vocabularies to their merchandise. The LOD dataset manufacturers and LOD service suppliers, the assistance architects and interface designers, and researchers in sciences and humanities, are also direct beneficiaries of LOD KOS.
The paper examines a set of the amassed cases experimental or in real functions and aims to find the usages of LOD KOS with the intention to share the practices and ideas among communities and users. Through the viewpoints of a couple of various user groups, the features of LOD KOS are tested from distinct dimensions. This paper makes a speciality of the LOD dataset manufacturers, vocabulary producers, and researchers as end users of KOS.