Paper Info
Title
Understanding Information Need: An fMRI Study.
Abstract
The raison d'etre of IR is to satisfy human information need. But, do we really understand information need? Despite advances in the past few decades in both the IR and relevant scientific communities, this question is largely unanswered. We do not really understand how an information need emerges and how it is physically manifested. Information need refers to a complex concept: at the very initial state of the phenomenon (i.e. at a visceral level), even the searcher may not be aware of its existence. This renders the measuring of this concept (using traditional behaviour studies) nearly impossible. In this paper, we investigate the connection between an information need and brain activity. Using functional Magnetic Resonance Imaging (fMRI), we measured the brain activity of twenty four participants while they performed a Question Answering (Q/A) Task, where the questions were carefully selected and developed from TREC-8 and TREC 2001 Q/A Track. The results of this experiment revealed a distributed network of brain regions commonly associated with activities related to information need and retrieval and differing brain activity in processing scenarios when participants knew the answer to a given question and when they did not and needed to search. We believe our study and conclusions constitute an important step in unravelling the nature of information need and therefore better satisfying it.
Year
DOI
Venue
2016
10.1145/2911451.2911534
SIGIR
Keywords
Field
DocType
Anomalous States of Knowledge,Information Need,Information Retrieval,fMRI Study
Question answering,Information needs,Functional magnetic resonance imaging,Information retrieval,Computer science,Brain activity and meditation,Phenomenon
Conference
Citations 
PageRank 
References 
8
0.85
56
Authors
3
Name
Order
Citations
PageRank
Yashar Moshfeghi130123.60
Peter Triantafillou21261151.76
Frank E. Pollick327438.14