R Zhu, C Li, A Zhang, C Zong, X Xia - Asia-Pacific Web (APWeb) and Web …, 2023 - Springer
Group nearest group query (GNG for short) is an important variant of NN search. Let D be
the d-multi-dimensional object set, GQ⟨ k, Q⟩ be a GNG with Q containing a set of d-multi …