A holistic and principled approach for the empty-answer problem

Davide Mottin, Alice Marascu, Senjuti Basu Roy, Gautam Das, Themis Palpanas, Yannis Velegrakis. A holistic and principled approach for the empty-answer problem. VLDB J., 25(4):597-622, 2016. [doi]

Abstract

Abstract is missing.