Reposted by Mohsen Fayyaz
📄 Collapse of Dense Retrievers
Accepted to #ACL2025 main conference 🎉🎉
In this paper we uncover major vulnerabilities in dense retrievers like Contriever, showing they favor:
📌 Shorter docs
📌 Early positions
📌 Repeated entities
📌 Literal matches
...all while ignoring the answer's presence!