Structure Cognizant Pseudo Relevance Feedback Arjun Atreya V author Yogesh Kakde author Pushpak Bhattacharyya author Ganesh Ramakrishnan author 2013-10 text Proceedings of the Sixth International Joint Conference on Natural Language Processing Ruslan Mitkov editor Jong C Park editor Asian Federation of Natural Language Processing Nagoya, Japan conference publication atreya-v-etal-2013-structure https://aclanthology.org/I13-1131/ 2013-10 982 986