Structural, syntactic, and statistical pattern recognition Joint IAPR International Workshop, S+SSPR 2018, Beijing, China, August 17-19, 2018 : proceedings - Bai, Xiao; Hancock, Edwin R. 1956-; Ho, Tin Kam; Wilson, Richard C.; Biggio, Battista; Robles-Kelly, Antonio (Lecture notes in computer science, 2018)