Title
Topic-Independent Modeling Of User Knowledge In Informational Search Sessions
Abstract
Web search is among the most frequent online activities. In this context, widespread informational queries entail user intentions to obtain knowledge with respect to a particular topic or domain. To serve learning needs better, recent research in the field of interactive information retrieval has advocated the importance of moving beyond relevance ranking of search results and considering a user's knowledge state within learning oriented search sessions. Prior work has investigated the use of supervised models to predict a user's knowledge gain and knowledge state from user interactions during a search session. However, the characteristics of the resources that a user interacts with have neither been sufficiently explored, nor exploited in this task. In this work, we introduce a novel set of resource-centric features and demonstrate their capacity to significantly improve supervised models for the task of predicting knowledge gain and knowledge state of users in Web search sessions. We make important contributions, given that reliable training data for such tasks is sparse and costly to obtain. We introduce various feature selection strategies geared towards selecting a limited subset of effective and generalizable features.
Year
DOI
Venue
2021
10.1007/s10791-021-09391-7
INFORMATION RETRIEVAL JOURNAL
Keywords
DocType
Volume
Human&#8211, computer interaction, Search as learning, Knowledge gain, SAL, Online learning
Journal
24
Issue
ISSN
Citations 
3
1386-4564
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Ran Yu100.34
Rui Tang200.34
Markus Rokicki3576.37
Ujwal Gadiraju4698.42
Stefan Dietze559768.07