Effect of Prevalence on Relevance Assessing Behaviour

information retrieval;user behaviour;prevalence;human performance;user studies;human factors;precision;Computer Science

Jethani, Chandra Prakash

University of Waterloo

关键词: information retrieval;    user behaviour;    prevalence;    human performance;    user studies;    human factors;    precision;    Computer Science;   

Others  :  https://uwspace.uwaterloo.ca/bitstream/10012/6160/1/Jethani_Chandra_Prakash.pdf

瑞士|英语

来源: UWSPACE Waterloo Institutional Repository

【 摘 要 】

Relevance assessing is an important part of information retrieval (IR) evaluation in addition to being something that all users of IR systems must do as part of their search for relevant documents. In this thesis, we present a user study conducted to understand the relevance judging behaviour of assessors when the prevalence of relevant documents in a set of documents to be judged is varied. In our user study, we collected judgements of participants on document sets of three different prevalence levels. The prevalence levels that we used were low (0.1), balanced (0.5) and high (0.9). We found that participants who judged documents at the 0.9 level made the most mistakes, and participants who judged documents at the 0.5 level made the least mistakes. We did not find a statistically significant difference in judging quality between 0.1 and 0.5 prevalence levels.