This paper presents a tool for extracting and normalizing temporal expressions in SMS messages in order to automatically fill in an electronic calendar. The extraction process is based on a library of finite-state transducers that identify temporal structures and annotate the components needed for the time normalization task.
Weiser, S., Cougnon, L.-A., & Watrin, P. (2011). Temporal expression extraction in sms messages. Proceedings of RANLP 2011. Workshop on Information Extraction and Knowledge Acquisition, 41-44. https://hdl.handle.net/2078.5/228913