Categorization of Search Results using Feedback Sessions?

Different users may have different user search goals for an ambiguous query while submitting it to search engine. In information retrieval, inference and analysis of user search goals are very useful. It can help to improve search engine relevance and user experience. So, for inferring user search goals, feedback sessions are used. Feedback sessions are constructed from search engine query logs. It consists of both clicked and un-clicked URLs and it reflects information needs of users easily. It clearly shows what a user requires and what does not care about. To describe the feedback session Pseudo documents are generated. Pseudo documents are used to approximate the goal texts in user minds. By using pseudo documents user search goals are discovered and displayed with some keywords for categorizing search results.