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Technischer Report
CD-Systems of Restarting Automata Governed by Explicit Enable and Disable Conditions
(2009-12-10)
We introduce a new mode of operation for CD-systems of restarting automata by providing explicit enable and disable conditions in the form of regular constraints. We show that, for each CD-system M of restarting automata and each mode m of operation considered by Messerschmidt and Otto, there exists a CD-system M' of restarting automata of the same type as M that, working in the new mode ed, accepts the language that M accepts in mode m. Further, we prove that in mode ed, a locally deterministic CD-system of restarting ...
Technischer Report
Global Optimization Algorithms and their Application to Distributed Systems
(2008-10-14)
In this report, we discuss the application of global optimization and Evolutionary Computation to distributed systems. We therefore selected and classified many publications, giving an insight into the wide variety of optimization problems which arise in distributed systems. Some interesting approaches from different areas will be discussed in greater detail with the use of illustrative examples.
Technischer Report
Evolving Classifiers - Evolutionary Algorithms in Data Mining
(2007-09-28)
Data mining means to summarize information from large amounts of raw data. It is one of the key technologies in many areas of economy, science, administration and the internet. In this report we introduce an approach for utilizing evolutionary algorithms to breed fuzzy classifier systems. This approach was exercised as part of a structured procedure by the students Achler, Göb and Voigtmann
as contribution to the 2006 Data-Mining-Cup contest, yielding encouragingly positive results.
Technischer Report
Lower Bounds for Nonforgetting Restarting Automata and CD-Systems of Restarting Automata
(2008-10-06)
The nonforgetting restarting automaton is a generalization of the restarting automaton
that, when executing a restart operation, changes its internal state based on the
current state and the actual contents of its read/write window instead of resetting it to the initial state. Another generalization of the restarting automaton is the cooperating distributed system (CD-system) of restarting automata. Here a finite system of restarting automata works together in analyzing a given sentence, where they interact based ...
Technischer Report
On Alternating Non-Context-Free Grammars
(2007-11-07)
We study several extensions of the notion of alternation from context-free grammars to context-sensitive and arbitrary phrase-structure grammars. Thereby new grammatical characterizations are obtained for the class of languages that are accepted by alternating pushdown automata.
Technischer Report
Evaluating the state of the art of parallel programming systems
(Universität Kassel, FB 16, Elektrotechnik/Informatik, 2005-12-20)
This paper describes our plans to evaluate the present state of affairs concerning parallel programming and its systems. Three subprojects are proposed: a survey among programmers and scientists, a comparison of parallel programming systems using a standard set of test programs, and a wiki resource for the parallel programming community - the Parawiki. We would like to invite you to participate and turn these subprojects into true community efforts.
Technischer Report
Fujaba Days 2011
(2012-05-30)
Fujaba is an Open Source UML CASE tool project started at the software engineering group of Paderborn University in 1997. In 2002 Fujaba has been redesigned and became the Fujaba Tool Suite with a plug-in architecture allowing developers to add functionality easily while retaining full control over their contributions. Multiple Application Domains Fujaba followed the model-driven development philosophy right from its beginning in 1997. At the early days, Fujaba had a special focus on code generation from UML diagrams ...
Technischer Report
LWA 2010
(2011-01-12)
Technischer Report
A Language for Interactive Cooperative Agents
(2009-03-20)
Cooperative behaviour of agents within highly dynamic and nondeterministic domains is an active field of research. In particular establishing highly responsive teamwork, where agents are able to react on
dynamic changes in the environment while facing unreliable communication and sensory noise, is an open problem. Moreover, modelling such responsive, cooperative behaviour is difficult. In this work, we specify a novel model for cooperative behaviour geared towards highly dynamic
domains. In our approach, agents ...
Dissertation
Supporting Researchers: Analyzing the Scholarly Publication Life Cycle and Social Bookmarking Systems
(2017-04-19)
Researchers must face the exponential growth of the body of available scholarly literature, which makes it ever harder to keep track with one’s own community, especially for newcomers. In this thesis, we explore different means of supporting researchers with that task. For this purpose, we follow two approaches: We provide analyses of research communities and of researchers’ interactions through data that can be obtained from the phases in the life cycle of scholarly publications (creation, dissemination, usage, and ...