Skip to Main content Skip to Navigation
Conference papers

Age-Related Effects of Task Difficulty on the Semantic Relevance of Query Reformulations

Abstract : This study examined the semantics of query reformulations in relation to age and task difficulty. Task difficulty was manipulated using a metric called task preciseness defined as the semantic similarity of the task description with the content of the target page(s) containing the answer. A behavioral experiment was conducted in which 24 younger adults and 21 older adults solved six low precise and six high precise information search tasks. The behavioral outcomes were found to be in line with preceding work indicating that the metric was successful in differentiating different levels of task difficulty. Analysis of the semantic relevance of queries showed that for low precise tasks, the queries generated by younger adults had significantly higher mean semantic relevance than that of older adults whereas for high precise tasks, it was the other way round. When analyzed across reformulations, it was found that the mean semantic relevance of queries generated by older adults, decreased for both low and high precise tasks. For younger adults, it remained constant for high precise tasks and even increased for low precise tasks. Implications of these findings for the design of information search systems are discussed.
Document type :
Conference papers
Complete list of metadata

Cited literature [52 references]  Display  Hide  Download

https://hal.inria.fr/hal-01676165
Contributor : Hal Ifip <>
Submitted on : Friday, January 5, 2018 - 11:22:40 AM
Last modification on : Tuesday, August 13, 2019 - 10:16:03 AM
Long-term archiving on: : Thursday, May 3, 2018 - 9:35:13 PM

File

421756_1_En_6_Chapter.pdf
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Saraschandra Karanam, Herre Oostendorp. Age-Related Effects of Task Difficulty on the Semantic Relevance of Query Reformulations. 16th IFIP Conference on Human-Computer Interaction (INTERACT), Sep 2017, Bombay, India. pp.77-96, ⟨10.1007/978-3-319-67744-6_6⟩. ⟨hal-01676165⟩

Share

Metrics

Record views

102

Files downloads

68