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X-WR-CALDESC:Events for ALOP
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20200713T160000
DTEND;TZID=Europe/Berlin:20200713T170000
DTSTAMP:20200630T101304Z
CREATED:20200615T085803Z
LAST-MODIFIED:20200630T101304Z
UID:3761-1594656000-1594659600@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Julia Gruebel\, M.Sc.\, FAU Erlangen-Nuernberg
DESCRIPTION:On Monday\, July 13. 2020 at 16:00 c.t.  Julia Gruebel\, FAU Erlangen-Nuernberg will present her recent work via a ZOOM presentation.  \nTitel: On Electricity Market Equilibria with Storage: Modeling\, Uniqueness\, and a Distributed ADMM\n Abstract: This talk focuses on spot-market trading of electricity including storage operators as additional agents besides producers and consumers. Storage devices allow for shifting produced electricity from one time period to a later one. Due to this\, multiple market equilibria may occur even if classical uniqueness assumptions for the case without storage systems are satisfied. For models containing storage operators\, we derive sufficient conditions that ensure uniqueness of generation and demand. We also prove uniqueness of the market equilibrium for the special case of a single storage operator. Nevertheless\, in case of multiple storage operators\, uniqueness fails to hold in general\, which we show by illustrative examples. We conclude the theoretical discussion with a general ex-post condition for proving the uniqueness of a given solution. In contrast to classical settings without storage systems\, the computation of market equilibria is much more challenging since storage operations couple all trading events over time. For this reason\, we propose a tailored parallel and distributed alternating direction method of multipliers (ADMM) for efficiently computing spot-market equilibria over long time horizons. We first analyze the parallel performance of the method itself. Finally\, we show that the parallel ADMM clearly outperforms solving the respective problems directly and that it is capable of solving instances with more than 42 million variables in less than 13 minutes. \n  \nThe ZOOM access link will be shared via email prior to the event.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-julia-gruebel/
CATEGORIES:Colloquium
ORGANIZER;CN="RTG ALOP at Trier University":MAILTO:ALOP@uni-trier.de
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DTSTART;TZID=Europe/Berlin:20200715T121500
DTEND;TZID=Europe/Berlin:20200715T131500
DTSTAMP:20200615T143005Z
CREATED:20200615T143005Z
LAST-MODIFIED:20200615T143005Z
UID:3768-1594815300-1594818900@alop.uni-trier.de
SUMMARY:Daniel Hoffmann to speak during Research Seminar
DESCRIPTION:ALOP member Daniel Hoffmann will speak during the research seminar on July 15\, 2020 on the topic \n“Branching Diffusions with Jumps and Valuation with Systemic Counterparts”\n \nPlease join as via ZOOM at 12:15 . The link will be distributed via Email.
URL:https://alop.uni-trier.de/event/daniel-hoffmann-to-speak-during-research-seminar/
CATEGORIES:Presentation
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DTSTART;TZID=Europe/Berlin:20200720T160000
DTEND;TZID=Europe/Berlin:20200720T180000
DTSTAMP:20200702T125404Z
CREATED:20200625T140724Z
LAST-MODIFIED:20200702T125404Z
UID:3802-1595260800-1595268000@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Mathieu Besançon
DESCRIPTION:On Monday\, July 20. 2020 at 16:00 c.t.  Mathieu Besançon of INRIA will present his recent work at our colloquium: \nNear-optimality robustness in bilevel optimization\n \nBilevel optimization studies problems where the optimal response to a second mathematical optimization problem is integrated in the constraints. We introduce near-optimal robustness for bilevel problems\, protecting the upper-level decision-maker from bounded rationality at the lower level. This model finds a corresponding and intuitive interpretation in various situations cast as bilevel optimization problems. We develop a duality-based solution method for cases where the lower level is convex\, leveraging the methodology from robust and bilevel literature.\nThe presentation will take place remotely via Zoom.  \nIf you wish to receive a link and invitation to this presentation\, please send an email to shawATuni-trier.de
URL:https://alop.uni-trier.de/event/alop-colloquium-with-mathieu-besancon/
CATEGORIES:Colloquium
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