Title
Choppy: Cut Transformer For Ranked List Truncation
Abstract
Work in information retrieval has traditionally focused on ranking and relevance: given a query, return some number of results ordered by relevance to the user. However, the problem of determining how many results to return, i.e. how to optimally truncate the ranked result list, has received less attention despite being of critical importance in a range of applications. Such truncation is a balancing act between the overall relevance, or usefulness of the results, with the user cost of processing more results. In this work, we propose Choppy, an assumption-free model based on the widely successful Transformer architecture, to the ranked list truncation problem. Needing nothing more than the relevance scores of the results, the model uses a powerful multi-head attention mechanism to directly optimize any user-defined IR metric. We show Choppy improves upon recent state-of-the-art methods.
Year
DOI
Venue
2020
10.1145/3397271.3401188
SIGIR '20: The 43rd International ACM SIGIR conference on research and development in Information Retrieval Virtual Event China July, 2020
DocType
ISBN
Citations 
Conference
978-1-4503-8016-4
2
PageRank 
References 
Authors
0.39
8
5
Name
Order
Citations
PageRank
Dara Bahri124.78
Yi Tay222928.97
Zheng Che320.39
Donald Metzler43138141.39
Andrew Tomkins593881401.23