This paper investigates the trend of relevant text fragments by task type. The search results of fine-grained information retrieval systems propose not documents but text fragments. We hypothesize that the properties of relevant text fragments depend on the task type. To reveal these properties, we evaluate a relevant text fragment to judge (1) its granularity (e.g., word, phrase, or sentence) and (2) its structural complexity. Our analysis shows that a task type based on more complex information needs has a larger granularity of relevant text fragments. On the other hand, the complexity of task type’s information needs does not necessarily correlate with the structural complexity of the relevant text fragments.
CITATION STYLE
Keyaki, A., & Miyazaki, J. (2018). Analysis of Relevant Text Fragments for Different Search Task Types. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 11292 LNCS, pp. 60–66). Springer Verlag. https://doi.org/10.1007/978-3-030-03520-4_6
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