English sentence retrieval system based on dependency structure and its evaluation

This paper proposes a system of retrieving English sentences by utilizing linguistically structural information. The userpsilas query consists of a sequence of keywords. The system automatically identifies dependency relations between occurrences of the keywords in sentences and classifies the sentences according to those dependency relations. The system provides a simple and intuitive keyword-based interface and realizes linguistically sophisticated sentence retrieval. We conducted an experiment to evaluate the accuracy of the system. The results demonstrate that the system provides high accuracy.