Wolfgang Maass

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Synapses play a central role in neural computation: the strengths of synaptic connections determine the function of a neural circuit. In conventional models of computation, synaptic strength is assumed to be a static quantity that changes only on the slow timescale of learning. In biological systems, however, synaptic strength undergoes dynamic modulation(More)
Business models on the basis of digital content require sophisticated descriptions of that content, as well as service-oriented carrier architectures that allow to negotiate and enforce contract and license schemes in heterogeneous digital application environments. We describe Knowledge Content Objects (KCO), that provide expressive semantic descriptions of(More)
We present a system that generates multimodal route descriptions for computer assisted vehicle navigation. 1 The presentation modes available in Vitra Guide are natural language, maps and perspective views. Depending on situation-specific constraints, e.g., fully specifed route descriptions for pre-trip planning or incremental route descriptions during(More)
In the last few years in cognitive science there has been a growing interest in the connection between visual perception and natural language. The question of interest is: How can we discuss what we see. With this question in mind in this article we will look at the area of incremental route descriptions. Here, a speaker step-by-step presents the relevant(More)
We show that networks of relatively realistic mathematical models for biological neurons can in principle simulate arbitrary feedforward sigmoidal neural nets in a way which has previously not been considered. This new approach is based on temporal coding by single spikes (respectively by the timing of synchronous ring in pools of neurons), rather than on(More)
Digital products constitute a growing class of economic goods that are increasingly traded via digital networks. In distributed digital networks, it is required that digital products adapt to heterogeneous requirements of electronic markets and subsequent usage environments. Adaptation depends on various kinds of information types that characterise a(More)
The exchange of semantically rich digital content over distributed applications facilitates knowledge exchanges in mixed human / machine environments as envisaged by scenarios within the scope of Ambient Intelligence and Semantic Web. For this class of domain, we introduce a semantically annotated data structure (KCO) and a distributed, layered(More)