We propose a hierarchical, unsupervised clustering algorithm (TreeGCS) based upon the Growing Cell Structure (GCS) neural network of Fritzke. Our algorithm improves an inconsisten...
In the last years, distributed coordinator-free systems, e.g., peerto-peer systems (P2P systems), have attracted much interest among researchers and practitioners. In these system...
Since there is no method to verify the trustworthiness of shared files in P2P file sharing systems, malicious peers can spread untrustworthy files to the system. In order to pre...
Abstract. We study the problem of evaluating RDF queries over structured overlay networks. We consider the publish/subscribe scenario where nodes subscribe with long-standing queri...
Using category theoretic notions, in particular diagrams and their colimits, we provide a common semantic backbone for various notions of modularity in structured ontologies, and o...