What is the first step for IRS to construct ontology of a domain or to cluster document of that domain?

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Marcin Roszkowski

@Monika, the first step is to search for existing ontologies and vocabularies, really. You may find interesting Linked Open Vocabularies (LOV) (http://lov.okfn.org/dataset/lov/search/). However, if you decide to build ontology from scratch you should stick to any well documented methodology, for example NeON methodology (http://mayor2.dia.fi.upm.es/oeg-upm/index.php/en/methodologies/59-neon-methodology) or simpler approach Ontology Development 101 (http://www.ksl.stanford.edu/people/dlm/papers/ontology-tutorial-noy-mcguinness-abstract.html)

Best wishes

Marcin

Monika Rani

Thank you Marcin Roszkowski sir

Zulia Ramírez Céspedes

Agree with Marcin. Although, you should study the domain, its essence and IRS users. All these in order to evaluate the usefulness of an existing vocabulary.