This document discusses an efficient semantic data alignment approach based on fuzzy c-means (FCM) clustering to infer user search goals using feedback sessions. It aims to cluster similar pseudo-documents representing user feedback sessions to better understand user search intents for a given query. The approach first collects feedback sessions from search results and generates pseudo-documents. It then uses FCM clustering to group similar pseudo-documents while also measuring semantic similarity between terms. This is an improvement over k-means clustering which does not consider semantic similarity. The results are evaluated using metrics like classified average precision and show this FCM-based approach performs better than clustering without semantic alignment.