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A disk based production quality RTree based upon Guttmans quadratic split algorithm having following features:
Buffering with dirty write,
Index joins,
Tree Seeding,
Window and NN queries,
Runtime STR Packing capability,
Completely Thread safe.
The application Crimeblips provides up-to-date crime statistics for Berlin (Germany). It maps and visualizes crimes, allowing users to identify crime hot spots, trends and general patterns. Bayesian algorithms are used to extract relevant information.
RDF-DocMan is a document manager based on a Sesame (RDF repository) backend. Documents are stored in the filesystem and their metadata in a Sesame repository.
It was developed for porQual web content generator (also in sf.net).
x2svg is software to graphically lay out files like XML Schema, DTDs and Java property files as scalable vector graphics (SVG). Diagrams can be converted into PDF, PNG, TIF and EPS files directly from within x2svg. A simple GUI and ant integration exist.
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The Open Optimization for Java provides a framework and the implementation of commonly-used algorithms found in Graph Theory and Network Optimization, e.g. shortest path and postman problem.
JMapDesk is a Java-Swing application to the UMN MapServer on the base of the shp2img tools (FWTools) similar to Sourcepole's Mapdesk. The UMN MapServer is a well known online map server software. MapServer is being configured through a so called Mapfile
Vehikel is a learning environment for behavior based control of mobile robots. A little bit artificial intelligence based on a domain specific language for the c't Bot.
LT4eL (Language Technology for e-Learning) develops a framework of multilingual language technology tools and semantic web techniques for improving the retrieval and the metadata annotation of learning material.
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This Java project creates a testing environment application to analyze an image at its low level features and suggest tags to clasify it using an ontology search based on the tags of similar images.
TimeSleuth discovers temporal decision rules. It also judges the (a)causality of the rules. TimeSleuth can discover rules that involve time: {if (rainy_yesterday = true) then rainy_today = true}, or {if (rainy_tomorrow = true) then rainy_today = true}.
This project tries to find geographical locations (formulated by GPS positions) for specific queries (eg 'art') in specific environments (eg 'Maastricht') by analyzing webpages.
trakkcor tracks your position via gps and submits the position data to your server. All you need is a j2me-compliant mobilephone which supports JSR-82 and an external gps receiver.
DLESE (Digital Library for Earth System Education) is a community-supported digital library dedicated to the collection, enhancement, and distribution of materials that facilitate learning about the Earth. Sponsored by the US National Science Foundation.
jDSM is a Java library for representing and analyzing Design Structure Matrices (DSM). It can be used to analyze any Java software with regards to modularity.
Cervelletto is a neural network simulator. It uses a new neural model based on biological, neurological and psychological studies. [it's not yet completed... just give me some weeks! sorry!]
a free cross platform calculator for calculating BIG numbers
BigAl is a free open source and platform independent software for calculating really BIG numbers. It supports not only standard arithmetic, but also exact period determination, predefined factorials, fibonacci with seeds, factorization, nth root, etc
The aim of the project is to provide open source collection of algorithms in the field of spectroscopy: data handling and processing, modeling and artificial intelligence tools.
Open source oBIX server implementation provides an infrastructure that developers can use for device integration in projects with "systems which sense" (to quote oBIX spec).
ScapeToad is an easy to use application for the cartogram creation. Cartograms are deformed maps where the polygon size is proportional to a given statistical value. ScapeToad reads and writes Shapefiles.
See <https://github.com/christiankaiser/ScapeToad> for the latest version of the code.