SpRL-CWW: Spatial Relation Classification with Independent Multi-class Models
Eric Nichols, Fadi Botros · 2015
In this paper we describe the SpRL-CWW entry into SemEval 2015: Task 8 SpaceEval.It detects spatial and motion relations as defined by the ISO-Space specifications in two phases: (1) it detects spatial elements and spatial/motion signals with a Conditional Random Field model that uses a combination of distributed word representations and lexicosyntactic features; (2) given relation candidate tuples, it simultaneously detects relation types and labels the spatial roles of participating elements by using a combination of syntactic and semantic features in independent multi-class classification models for each relation type.In evaluation on the shared task data, our system performed particularly well on detection of elements and relations in unannotated data.