Exploiting Structure and Content of Wikipedia for Query Expansion in the Context Surya Ganesh author Vasudeva Varma author 2009-09 text Proceedings of the International Conference RANLP-2009 Galia Angelova editor Ruslan Mitkov editor Association for Computational Linguistics Borovets, Bulgaria conference publication ganesh-varma-2009-exploiting-structure https://aclanthology.org/R09-1020/ 2009-09 103 106