Data Set Used
The ImageCLEF 2011 Photo Annotation and Concept-based Retrieval Tasks pose the challenge of an automated annotation of Flickr images with 99 visual concepts and the retrieval of images based on query topics. The participants were provided with a training set of 8,000 images including annotations, EXIF data, and Flickr user tags. The annotation challenge was… (More)
We describe a simple framework for microsimulation of city trac. A medium-sized excerpt of Dallas was used to examine dierent levels of simulation delity of a cellular automaton method for the trac ow simulation and a simple intersection model. We point out problems arising with the granular structure of the underlying rules of motion.
This paper presents the participation of the Fraunhofer IDMT in the ImageCLEF 2011 Photo Annotation Task. Our approach is focused on text-based features and strategies to combine visual and textual information. First, we apply a pre-processing step on the provided Flickr tags to reduce noise. For each concept, tf-idf values per tag are computed and used to… (More)
This paper presents results on the simulation of the evacuation of the city of Padang with approximately 1,000,000 inhabitants. The model used is MATSim (www.matsim.org). Three different strategies were applied: shortest path solution, user optimum, system optimum, together with a constraint that moves should reduce risk whenever possible. The introduction… (More)