Information scent, searching and stopping: modelling SERP level stopping behaviour

Research output: ResearchConference contribution

Current models and measures of the \emph{Interactive Information Retrieval (IIR)} process typically assume that a searcher will always examine the first snippet in a given \emph{Search Engine Results Page (SERP)}, and then with some probability or cutoff, he or she will stop examining snippets and/or documents in the ranked list (snippet level stopping). Prior work has however shown that searchers will form an initial impression of the SERP, and will often abandon a page without clicking on or inspecting in detail any snippets or documents. That is, the \emph{information scent} affects their decision to continue. In this work, we examine whether considering the information scent of a page leads to better predictions of stopping behaviour. In a simulated analysis, grounded with data from a prior user study, we show that introducing a SERP level stopping strategy can improve the performance attained by simulated users, resulting in an increase in gain across most snippet level stopping strategies. When compared to actual search and stopping behaviour, incorporating SERP level stopping offers a closer approximation than without. These findings show that models and measures that na\"{i}vely assume snippets and documents in a ranked list are actually examined in detail are less accurate, and that modelling SERP level stopping is required to create more realistic models of the search process.
Original languageEnglish
Title of host publicationAdvances in Information Retrieval - 40th European Conference on IR Research, ECIR 2018, Proceedings
Subtitle of host publicationLecture Notes in Computer Science
Place of PublicationBerlin
PublisherSpringer-Verlag
Pages210-222
Number of pages13
Volume10772
ISBN (Print)9783319769400
DOIs
StatePublished - 30 Apr 2018

    Research areas

  • information retrieval, SERP, Search Engine Results Page, stopping behaviour

View graph of relations