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versión On-line ISSN 1870-9044

Polibits  no.43 México ene./jun. 2011


Clause Boundary Identification using Classifier and Clause Markers in Urdu Language


Daraksha Parveen*, Ratna Sanyal**, and Afreen Ansari***


Indian Institute of Information Technology –Allahabad, India (e–mail: *; **; ***


Manuscript received November 2, 2010.
Manuscript accepted for publication January 12, 2011.



This paper presents the identification of clause boundary for the Urdu language. We have used Conditional Random Field as the classification method and the clause markers. The clause markers play the role to detect the type of subordinate clause, which is with or within the main clause. If there is any misclassification after testing with different sentences then more rules are identified to get high recall and precision. Obtained results show that this approach efficiently determines the type of sub–ordinate clause and its boundary.

Key words: Clause marker, conditional random field.





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