Computational Treatment of Temporal Notions (CTTN)
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 specication
language GeTS (GeoTemporal Specications).
GeTS is a functional specification and programming language with a number of built-in constructs
for specifying customized temporal notions. CTTN is implemented as a Web server and as a C++ library.
- Project Homepage
- www.pms.ifi.lmu.de/CTTN
Local Data Stream Management System (L-DSMS)
L-DSMS is a general system for configuring and (locally) executing
networks of processing nodes for data streams. Each such node receives data
from one or several data sources, processes them in a certain way, and delivers
the processed data to one or more data drains. A data drain can be the data
source for the next processing node in the network, or it can be the end
application in the whole processing chain. One of the components of L-DSMS is
the SPEX XML filtering system. It processes XPath queries on a stream of XML
data and can be used to extract interesting information from XML streams.
GeoDataServer is an application for processing dynamic geoinformation data
(e.g. traffic information). The data comes from different sources (e.g. RDS-TMC
capable FM receivers) and is processed in several steps and then delivered to
enduser systems (e.g. graphical visualization systems).
- Project Homepage
- www.pms.ifi.lmu.de/rewerse-wga1/ldsms
Ontology based Traffic Network (OTN)
The Ontology based Traffic Network (OTN) deals with the most important
aspects of traffic networks, transportation and locomotion in
general. It is based on the Geographic Data File format (GDF) which
is available as the ISO standard 14825 and is currently at version 4.0.
For the purpose of transforming OTN data to SVG, i.e. displaying
data in a SVG-enabled web browser, we provide the transformation
ontology OTN2SVG.
- OTN:
- OTN.owl (152 kB)
- OTN to SVG transformation ontology:
- OTN2SVG.owl (24 kB)
