1. CM-1 Dataset PROMISE Website.
http://promisedata.org/promised/trunk/promisedata.org/data/cm1-maintain/cm1-maintain.txt,
(accessed: April 18, 2013)
2. Regional real-time transit information system system requirements version 3.0 (2012).
http://www.mtc.ca.gov/planning/tcip/Real-Time_TransitSystemRequirements_v3.0.pdf,
(accessed: April 18, 2013)
3. Baldridge, J.: The opennlp project.
http://opennlp.apache.org/index.html
(accessed February 2, 2012) (2005)
4. Baral, C., Gelfond, M.: Reasoning agents in dynamic domains. In: Logic-Based Artificial Intelligence, pp. 257–279. Springer (2000)
5. Lecture Notes in Computer Science (Lecture Notes in Artificial Intelligence);A Cimatti,2002