It uses simple metrics and processing based on object and event semantics.
in the context of shared physical tasks in a common workspace, shared perception creates the context for the conversation between interlocutors (Lascarides and Stone, 2006;Lascarides and Stone, 2009b;Clair et al., 2010;Matuszek et al., 2014), and it is this shared space that gives many gestures, such as pointing, their meaning (Krishnaswamy and Pustejovsky, 2016a).