196,523 research outputs found
Fast and Scalable Mining of Time Series Motifs with Probabilistic Guarantees
No full textMining time series motifs is a fundamental, yet expensive task in exploratory data analytics. In this paper, we therefore propose a fast method to find the top-k motifs with probabilistic guarantees. Our probabilistic approach is based on Locality Sensitive Hashing and allows to prune most of the distance computations, leading to huge speedups. We improve on a straightforward application of LSH to time series data by developing a self-tuning algorithm that adapts to the data distribution. Furthermore, we include several optimizations to the algorithm, reducing redundant computations and leveraging the structure of time series data to speed up LSH computations. We prove the correctness of the algorithm and provide bounds to the cost of the basic operations it performs. An experimental evaluation shows that our algorithm is able to tackle time series of one billion points on a single CPU-based machine, performing orders of magnitude faster than the GPU-based state of the art
Vom Graphen zur Gesellschaft. Analyse und Theorie sozialer Netzwerke
No full textHolzer B. Vom Graphen zur Gesellschaft. Analyse und Theorie sozialer Netzwerke. In: Gamper M, Reschke L, eds. Knoten und Kanten: Soziale Netzwerkanalyse in Wirtschafts- und Migrationsforschung. Sozialtheorie. Bielefeld: transcript; 2010: 77-94
Persönliche Netzwerke und ethnische Identität bei italienischen Migranten
No full textFuhse JA. Persönliche Netzwerke und ethnische Identität bei italienischen Migranten. In: Gamper M, Reschke L, eds. Knoten und Kanten: Soziale Netzwerkanalyse in Wirtschafts- und Migrationsforschung. Bielefeld: transcript; 2010: 363-391
Die Zeit selbst scheint sich wider sie verschworen zu haben‘. Die naturgeschichtlichen Eigenzeiten des Bibers von Linné über Buffon bis Goethe
No full textSchönbeck S. Die Zeit selbst scheint sich wider sie verschworen zu haben‘. Die naturgeschichtlichen Eigenzeiten des Bibers von Linné über Buffon bis Goethe. In: Gamper M, ed. Ästhetische Eigenzeiten der Wissenschaften. Ästhetische Eigenzeiten . Vol 17. Hannover: Wehrhahn; 2020: 195–225
What’s New in Temporal Databases?
No full textTemporal databases has been an active research area since many decades, ranging from research work on query processing, most dominantly on selection and join queries, to new directions in models and semantics, such as for instance temporal probabilistic or streaming data. At the same time more database vendors have been integrating temporal features into their systems, most notably, the temporal features of the SQL standard. In this paper, we summarize the latest research developments as presented in 30 research papers over the last five years in the context of temporal relational databases. Additionally, we also describe the developments of industrial database systems and vendors
Der Akt des Bildbetrachtens. Überlegungen zur rezeptionsästhetischen Temporalität des Bildes
No full textGrave J. Der Akt des Bildbetrachtens. Überlegungen zur rezeptionsästhetischen Temporalität des Bildes. In: Gamper M, Hühn H, eds. Zeit der Darstellung: ästhetische Eigenzeiten in Kunst, Literatur und Wissenschaft. Ästhetische Eigenzeiten. Vol 1. Hannover: Wehrhahn; 2014: 51-71
Takt
No full textRonzheimer E. Takt. In: Gamper M, Hühn H, Richter S, eds. Formen der Zeit. Ein Wörterbuch der ästhetischen Eigenzeiten. Ästhetische Eigenzeiten. Vol 16. Hannover: Wehrhahn Verlag; 2020: 340-346
Kv7 Channels and Excitability Disorders
No full textKv7.1-Kv7.5 (KCNQ1–5) K+ channels are voltage-gated K+ channels with major roles in neurons, muscle cells and epithelia where they underlie physiologically important K+ currents, such as neuronal M current and cardiac IKs. Specific biophysical properties of Kv7 channels make them particularly well placed to control the activity of excitable cells. Indeed, these channels often work as ‘excitability breaks’ and are targeted by various hormones and modulators to regulate cellular activity outputs. Genetic deficiencies in all five KCNQ genes result in human excitability disorders, including epilepsy, arrhythmias, deafness and some others. Not surprisingly, this channel family attracts considerable attention as potential drug targets. Here we will review biophysical properties and tissue expression profile of Kv7 channels, discuss recent advances in the understanding of their structure as well as their role in various neurological, cardiovascular and other diseases and pathologies. We will also consider a scope for therapeutic targeting of Kv7 channels for treatment of the above health conditions
Zeit der Form - Formen der Zeit
No full textGamper M, Geulen E, Grave J, Langenohl A, Simon R, Zubarik S, eds. Zeit der Form - Formen der Zeit. Ästhetische Eigenzeiten. Vol 2. Hannover: Werhahn Verlag; 2016
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