ISO 12620
ISO 12620 is a standard from ISO/TC 37 which defines a "Data Category Registry" , a registry for registering linguistic terms used in various fields of translation , computational linguistics and natural language processing and defining mappings both between different terms and the same terms used in different systems . 
<triplet> ISO 12620 <subj> standard <obj> instance of <triplet> translation <subj> natural language processing <obj> studied by