Two scrolls or one click: a cost model for browsing search results

Leif Azzopardi*, Guido Zuccon

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

15 Citations (Scopus)
76 Downloads (Pure)


Modeling how people interact with search interfaces has been of particular interest and importance to the field of Interactive Information Retrieval. Recently, there has been a move to developing formal models of the interaction between the user and the system, whether it be to run a simulation, conduct an economic analysis, measure system performance, or simply to better understand the interactions. In this paper, we present a cost model that characterizes a user examining search results. The model shows under what conditions the interface should be more scroll based or more click based and provides ways to estimate the number of results per page based on the size of the screen and the various interaction costs. Further extensions to the model could be easily included to model different types of browsing and other costs.

Original languageEnglish
Title of host publicationAdvances in Information Retrieval
Subtitle of host publicationECIR 2016. Lecture Notes in Computer Science
Place of PublicationSwitzerland
Number of pages7
ISBN (Print)9783319306704
Publication statusPublished - 2016
Event38th European Conference on Information Retrieval Research, ECIR 2016 - Padua, Italy
Duration: 20 Mar 201623 Mar 2016

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference38th European Conference on Information Retrieval Research, ECIR 2016


  • interactive information retrieval
  • human-computer interaction
  • HCI
  • search
  • user interface design
  • information seeking behaviour


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