@article{paperid:1062870, author = {Andisheh Keikha and Ensan, F and Ebrahim Bagheri}, title = {Query expansion using pseudo relevance feedback on wikipedia}, journal = {Journal of Intelligent Information Systems}, year = {2017}, volume = {50}, number = {3}, month = {May}, issn = {0925-9902}, pages = {455--478}, numpages = {23}, keywords = {Query suggestion; Query expansion ; Wikipedia ; Web search}, }