  This paper describes pre-processing phase of ontology graph generation system
from Punjabi text documents of different domains. This research paper focuses
on pre-processing of Punjabi text documents. Pre-processing is structured
representation of the input text. Pre-processing of ontology graph generation
includes allowing input restrictions to the text, removal of special symbols
and punctuation marks, removal of duplicate terms, removal of stop words,
extract terms by matching input terms with dictionary and gazetteer lists
terms.
