Ultra-stemming and Statistical Summarization at INEX 2013 Tweet Contextualization Track

According to the organizers, the objective of the 2013 INEX Tweet Contextualization Task is: “...The Tweet Contextualization aims at providing automatically information a summary that explains the tweet. This requires combining multiple types of processing from information retrieval to multi-document summarization including entity linking.” We present the Cortex summarizer applied to the INEX 2013 task. Cortex summarizer uses several sentence selection metrics and an optimal decision module to score sentences from a document source. The results show that Cortex system performs well on INEX task.