SIGIR '02 Proceedings of the 25th annual international ACM SIGIR conference on Research and development in information retrieval
Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval
Predicting query difficulty on the web by learning visual clues
Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval
Combining pre-retrieval query quality predictors using genetic programming
Applied Intelligence
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We analyze the relationship between topic features and difficulties in Web navigational retrieval tasks based on the experiments done on the NTCIR-5 Web test collection. Our analysis shows that the difficulties of a retrieval task are closely related to the specificity of the topic, and topics that are of some particular categories are more difficult than others. For example, a representative page of a company or an organization is easier on average to find than that of a person, a product, or an event. Our results show that adding metadata on a topic would potentially be useful for search engines to predict the difficulty of the task. Additionally, we show that the number of unique documents retrieved from different systems weakly correlates with the query’s performance.