York University at TREC 2009: Chemical Track
Jiashu Zhao, Jimmy Xiangji Huang, Zheng Ye, Jianhan Zhu · 2009
Our chemical experiments mainly focus on addressing three major problems in two chemical information retrieval tasks, Technology Survey (TS) task and Prior Art (PA) task. The three problems are: (1) how to deal with chemical terminology synonyms? (2) how to deal with chemical terminology abbreviation? (3) how to deal with long queries in Prior Art (PA) task? In particular, we propose a query expansion algorithm for TS task and a keyword-selection algorithm for PA task. The Mean Average Precision (MAP) for our TS task run “york09ca07 ” using Algorithm 1 was 0.2519 and for our PA task run “york09caPA01 ” using Algorithm 2 was 0.0566. The evaluation results show that both algorithms are effective for improving retrieval performance.