Calendrical calculations
Symbolic representation of user-defined time granularities
Annals of Mathematics and Artificial Intelligence
Efficient Resolution Mechanism for Fuzzy Temporal Constraint Logic
TIME '00 Proceedings of the Seventh International Workshop on Temporal Representation and Reasoning (TIME'00)
Relations Between Fuzzy Time Intervals
TIME '04 Proceedings of the 11th International Symposium on Temporal Representation and Reasoning
Possibilistic temporal reasoning based on fuzzy temporal constraints
IJCAI'95 Proceedings of the 14th international joint conference on Artificial intelligence - Volume 2
Representing and Combining Calendar Information by Using Finite-State Transducers
Proceedings of the 2009 conference on Finite-State Methods and Natural Language Processing: Post-proceedings of the 7th International Workshop FSMNLP 2008
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The CTTN-system is a computer program which provides advanced processing of temporal notions. The basic data structures of the CTTN-system are time points, crisp and fuzzy time intervals, labelled partitionings of the time line, durations, and calendar systems. The labelled partitionings are used to model periodic temporal notions, quite regular ones like years, months etc., partially regular ones like timetables, but also very irregular ones like, for example, dates of a conference series. These data structures can be used in the temporal specification language GeTS (GeoTemporal Specifications). GeTS is a functional specification and programming language with a number of built-in constructs for specifying customised temporal notions. CTTN is implemented as a Web server and as a C++ library. This paper gives a short overview over the current state of the system and its components.