TY - GEN AB - We consider a resource-aware variant of the classical multi-armed bandit problem: In each round, the learner selects an arm and determines a resource limit. It then observes a corresponding (random) reward, provided the (random) amount of consumed resources remains below the limit. Otherwise, the observation is censored, i.e., no reward is obtained. For this problem setting, we introduce a measure of regret, which incorporates the actual amount of allocated resources of each learning round as well as the optimality of realizable rewards. Thus, to minimize regret, the learner needs to set a resource limit and choose an arm in such a way that the chance to realize a high reward within the predefined resource limit is high, while the resource limit itself should be kept as low as possible. We derive the theoretical lower bound on the cumulative regret and propose a learning algorithm having a regret upper bound that matches the lower bound. In a simulation study, we show that our learning algorithm outperforms straightforward extensions of standard multi-armed bandit algorithms. AU - Bengs, Viktor AU - Hüllermeier, Eyke ID - 21536 T2 - arXiv:2011.00813 TI - Multi-Armed Bandits with Censored Consumption of Resources ER - TY - JOUR AU - Ortmann, Regina AU - Pelster, Matthias AU - Wengerek, Sascha Tobias ID - 21539 JF - Finance Research Letters SN - 1544-6123 TI - COVID-19 and investor behavior ER - TY - CONF AB - In this publication, the near-field to far-field transformation using the self-built near-field scanner NFS3000 is examined with regard to its geometry. This device allows to measure electric and magnetic fields in small distances to the DUT (Device under Test) with high geometric precision and high sensitivity. Leading to a fast examination of EMC (Electromagnetic Compatibility) problems, because the electromagnetic properties are better understandable and therefore easier to solve than e.g. measurements in a far-field chamber. In addition, it is possible to extrapolate the near-fields into the far-field and to determine the radiation pattern of antennas and emitting objects. For this purpose, this paper deals with the basis of this transformation, the so-called surface equivalence theorem. This principle is then adapted to the measurement of near-field scanners and implemented accordingly. Due to the non-ideal design of the near-field scanner, the effects on a far-field transformation are finally presented and discussed. AU - Lange, Sven AU - Schroder, Dominik AU - Hedayat, Christian AU - Hangmann, Christian AU - Otto, Thomas AU - Hilleringmann, Ulrich ID - 21541 KW - Near-Field Scanner KW - Near-Field to Far-Field Transformation KW - Directivity KW - Surface Equivalence Theorem KW - Huygens’ Box SN - 2325-0364 T2 - 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE TI - Investigation of the Surface Equivalence Principle on a Metal Surface for a Near-Field to Far-Field Transformation by the NFS3000 ER - TY - CHAP AB - Using near-field (NF) scan data to predict the far-field (FF) behaviour of radiating electronic systems represents a novel method to accompany the whole RF design process. This approach involves so-called Huygens' box as an efficient radiation model inside an electromagnetic (EM) simulation tool and then transforms the scanned NF measured data into the FF. For this, the basic idea of the Huygens'box principle and the NF-to-FF transformation are briefly presented. The NF is measured on the Huygens' box around a device under test using anNF scanner, recording the magnitude and phase of the site-related magnetic and electric components. A comparison between a fullwave simulation and the measurement results shows a good similarity in both the NF and the simulated and transformed FF.Thus, this method is applicable to predict the FF behaviour of any electronic system by measuring the NF. With this knowledge, the RF design can be improved due to allowing a significant reduction of EM compatibility failure at the end of the development flow. In addition, the very efficient FF radiation model can be used for detailed investigations in various environments and the impact of such an equivalent radiation source on other electronic systems can be assessed. AU - Schröder, Dominik AU - Lange, Sven AU - Hangmann, Christian AU - Hedayat, Christian ID - 21542 KW - Huygens' box KW - NF-to-FF transformation KW - efficient FF radiation model KW - FF behaviour KW - EMI assessment KW - PCB KW - near-field measurements KW - efficient radiation model KW - far-field behaviour KW - RF design process KW - far-field prediction KW - Huygens'box principle KW - fullwave simulation KW - electronic system radiation KW - equivalent radiation source KW - electromagnetic simulation tool KW - near-field scan data KW - EM compatibility failure reduction SN - 9781839530494 T2 - Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis TI - Far-field prediction combining simulations with near-field measurements for EMI assessment of PCBs ER - TY - CHAP AU - Berger, Thomas AU - Lanza, Lukas Johannes ID - 21579 SN - 2199-7497 T2 - Progress in Differential-Algebraic Equations II TI - Observers for Differential-Algebraic Systems with Lipschitz or Monotone Nonlinearities ER - TY - CONF AU - Gatica, Carlos Paiz AU - Platzner, Marco ID - 21584 SN - 2522-8579 T2 - Machine Learning for Cyber Physical Systems (ML4CPS 2017) TI - Adaptable Realization of Industrial Analytics Functions on Edge-Devices using Reconfigurable Architectures ER - TY - JOUR AU - Meschede, Henning ID - 21608 JF - Renewable Energy SN - 0960-1481 TI - Analysis on the demand response potential in hotels with varying probabilistic influencing time-series for the Canary Islands ER - TY - JOUR AU - Graf-Schlattmann, Marcel AU - Meister, Dorothee M. AU - Oevel, Gudrun AU - Wilde, Melanie ID - 17331 IS - 1 JF - Forschungsperspektiven auf Digitalisierung in Hochschulen, Zeitschrift für Hochschulentwicklung TI - Kollektive Veränderungsbereitschaft als zentraler Erfolgsfaktor von Digitalisierungsprozessen an Hochschulen VL - 15 ER - TY - JOUR AU - Hampel, Uwe AU - Schubert, Markus AU - Döß, Alexander AU - Sohr, Johanna AU - Vishwakarma, Vineet AU - Repke, Jens‐Uwe AU - Gerke, Sören J. AU - Leuner, Hannes AU - Rädle, Matthias AU - Kapoustina, Viktoria AU - Schmitt, Lucas AU - Grünewald, Marcus AU - Brinkmann, Jost H. AU - Plate, Dominik AU - Kenig, Eugeny AU - Lutters, Nicole AU - Bolenz, Lukas AU - Buckmann, Felix AU - Toye, Dominique AU - Arlt, Wolfgang AU - Linder, Thomas AU - Hoffmann, Rainer AU - Klein, Harald AU - Rehfeldt, Sebastian AU - Winkler, Thomas AU - Bart, Hans‐Jörg AU - Wirz, Dominic AU - Schulz, Jonas AU - Scholl, Stephan AU - Augustin, Wolfgang AU - Jasch, Katharina AU - Schlüter, Florian AU - Schwerdtfeger, Natalie AU - Jahnke, Stefan AU - Jupke, Andreas AU - Kabatnik, Christoph AU - Braeuer, Andreas Siegfried AU - D'Auria, Mirko AU - Runowski, Thomas AU - Casal, Maria Francisco AU - Becker, Karsten AU - David, Anna‐Lena AU - Górak, Andrzej AU - Skiborowski, Mirko AU - Groß, Kai AU - Qammar, Hina ID - 17335 JF - Chemie Ingenieur Technik SN - 0009-286X TI - Recent Advances in Experimental Techniques for Flow and Mass Transfer Analyses in Thermal Separation Systems VL - 92 ER - TY - CHAP AU - Jazayeri, Bahar AU - Schwichtenberg, Simon AU - Küster, Jochen AU - Zimmermann, Olaf AU - Engels, Gregor ID - 17337 SN - 0302-9743 T2 - Advanced Information Systems Engineering TI - Modeling and Analyzing Architectural Diversity of Open Platforms ER -