From Temporal Expressions to Temporal Information: Semantic Tagging of News Messages
Frank Schilder, Christopher U. Habel · 2005
Abstract This paper describes a semantic tagging system that extracts temporal information from news messages. Temporal expressions are defined for this system as chunks of text that express some sort of direct or inferred temporal information. The set of these expressions investigated in the present paper includes dates (e.g. 08.04.2001), prepositional phrases (PPs) containing some time expression (e.g. on Friday), and verbs referring to a situation (e.g. opened ). Related work by Mani and Wilson (2000) focuses only on the core temporal expressions neglecting the temporal information conveyed by prepositions (e.g. Friday vs. by Friday).