TY - JOUR
AB - AbstractThe efficiency of state-of-the-art algorithms for the dueling bandits problem is essentially due to a clever exploitation of (stochastic) transitivity properties of pairwise comparisons: If one arm is likely to beat a second one, which in turn is likely to beat a third one, then the first is also likely to beat the third one. By now, however, there is no way to test the validity of corresponding assumptions, although this would be a key prerequisite to guarantee the meaningfulness of the results produced by an algorithm. In this paper, we investigate the problem of testing different forms of stochastic transitivity in an online manner. We derive lower bounds on the expected sample complexity of any sequential hypothesis testing algorithm for various forms of stochastic transitivity, thereby providing additional motivation to focus on weak stochastic transitivity. To this end, we introduce an algorithmic framework for the dueling bandits problem, in which the statistical validity of weak stochastic transitivity can be tested, either actively or passively, based on a multiple binomial hypothesis test. Moreover, by exploiting a connection between weak stochastic transitivity and graph theory, we suggest an enhancement to further improve the efficiency of the testing algorithm. In the active setting, both variants achieve an expected sample complexity that is optimal up to a logarithmic factor.
AU - Haddenhorst, Björn
AU - Bengs, Viktor
AU - Hüllermeier, Eyke
ID - 25035
JF - Machine Learning
SN - 0885-6125
TI - On testing transitivity in online preference learning
ER -
TY - JOUR
AU - Mutschmann, Martin
AU - Hasso, Tim
AU - Pelster, Matthias
ID - 25042
JF - Journal of Business Ethics
TI - Dark triad managerial personality and financial reporting manipulation
ER -
TY - JOUR
AB - While increasing digitalization enables multiple advantages for a reliable operation of technical systems, a remaining challenge in the context of condition monitoring is seen in suitable consideration of uncertainties affecting the monitored system. Therefore, a suitable prognostic approach to predict the remaining useful lifetime of complex technical systems is required. To handle different kinds of uncertainties, a novel Multi-Model-Particle Filtering-based prognostic approach is developed and evaluated by the use case of rubber-metal-elements. These elements are maintained preventively due to the strong influence of uncertainties on their behavior. In this paper, two measurement quantities are compared concerning their ability to establish a prediction of the remaining useful lifetime of the monitored elements and the influence of present uncertainties. Based on three performance indices, the results are evaluated. A comparison with predictions of a classical Particle Filter underlines the superiority of the developed Multi-Model-Particle Filter. Finally, the value of the developed method for enabling condition monitoring of technical systems related to uncertainties is given exemplary by a comparison between the preventive and the predictive maintenance strategy for the use case.
AU - Bender, Amelie
ID - 25046
IS - 10
JF - Machines
KW - prognostics
KW - RUL predictions
KW - particle filter
KW - uncertainty consideration
KW - Multi-Model-Particle Filter
KW - model-based approach
KW - rubber-metal-elements
KW - predictive maintenance
SN - 2075-1702
TI - A Multi-Model-Particle Filtering-Based Prognostic Approach to Consider Uncertainties in RUL Predictions
VL - 9
ER -
TY - CONF
AU - Křivská, B
AU - Šlapáková, M
AU - Králík, R
AU - Bajtošová, L
AU - Cieslar, M
AU - Grydin, Olexandr
AU - Stolbchenko, M
AU - Schaper, Mirko
ID - 25047
SN - 1757-899X
T2 - IOP Conference Series: Materials Science and Engineering
TI - Resistivity and Formation of Intermetallic Layer in Aluminum-Steel Clad Strip
VL - 1178
ER -
TY - JOUR
AU - Göddecke, Johannes
AU - Meschut, Gerson
AU - Damm, Jannis
AU - Albiez, Matthias
AU - Ummenhofer, Thomas
ID - 25104
JF - adhäsion KLEBEN & DICHTEN
SN - 1619-1919
TI - Dämpfungseigenschaften geklebter Verbindungen - Potenzialanalyse und Klebstoffcharakterisierung
ER -
TY - CONF
AU - Dolev, Shlomi
AU - Prasadh Narayanan, Ram
AU - Scheideler, Christian
AU - Schindelhauer, Christian
ED - Galluccio, Laura
ED - Mitra, Urbashi
ED - Magarini, Maurizio
ED - Abada, Sergi
ED - Taynnan Barros, Michael
ED - Krishnaswamy, Bhuvana
ID - 25105
T2 - NANOCOM '21: The Eighth Annual ACM International Conference on Nanoscale Computing and Communication, Virtual Event, Italy, September 7 - 9, 2021
TI - Logarithmic Time MIMO Based Self-Stabilizing Clock Synchronization
ER -
TY - GEN
AB - Motivated by the prospect of computing agents that explore unknown environments and construct convex hulls on the nanoscale, we investigate the capabilities and limitations of a single deterministic finite automaton robot in the three-dimensional hybrid model for programmable matter. In this model, active robots move on a set of passive tiles, called configuration, with the geometric shape of rhombic dodecahedra on the adjacency graph of the face-centered cubic sphere-packing. We show that the exploration problem is equally hard in the hybrid model and in three-dimensional mazes, in which tiles have the shape of cubes and are positioned at the vertices of $\mathbb{Z}^3$. Thereby, a single robot with a constant number of pebbles cannot solve this problem in the hybrid model on arbitrary configurations. We provide algorithms for a robot with two pebbles that solve the exploration problem in the subclass of compact configurations of size $n$ in $\O(n^3)$ rounds. Further, we investigate the robot's capabilities of detection and hull construction in terms of restricted orientation convexity. We show that a robot without any pebble can detect strong $\O$-convexity in $\O(n)$ rounds, but cannot detect weak $\O$-convexity, not even if provided with a single pebble. Assuming that a robot can construct tiles from scratch and deconstruct previously constructed tiles, we show that the strong $\O$-hull of any given configuration of size $n$ can be constructed in $\O(n^4)$ rounds, even if the robot cannot distinguish constructed from native tiles.
AU - Liedtke, David Jan
ID - 25126
KW - Robot Exploration
KW - Finite Automaton
KW - Hybrid Model for Programmable Matter
KW - Convex Hull
TI - Exploration and Convex Hull Construction in the Three-Dimensional Hybrid Model
ER -
TY - JOUR
AB - Additive Manufacturing provides the opportunity to produce tailored and complex structures economically. The use of lattice structures in combination with a thermoplastic elastomer enables the generation of structures with configurable properties by varying the cell parameters. Since there is only little knowledge about the producibility of lattice structures made of TPE in the laser sintering process and the resulting mechanical properties, different kinds of lattice structures are investigated within this work. The cell type, cell size and strut thickness of these structures are varied and analyzed. Within the experimental characterization of Dodecahedron-cell static and cyclic compression tests of sandwich structures are focused. The material exhibits hyperelastic and plastic properties and also the Mullins-Effect. For the later design of real TPE structures, the use of numerical methods helps to reduce time and costs. The preceding experimental investigations are used to develop a concept for the numerical modeling of TPE lattice structures.
AU - Kummert, Christina
AU - Schmid, Hans-Joachim
AU - Risse, Lena
AU - Kullmer, Gunter
ID - 25142
JF - Journal of Materials Research
SN - 0884-2914
TI - Mechanical characterization and numerical modeling of laser-sintered TPE lattice structures
ER -
TY - CONF
AU - Müller, Michelle
AU - Seutter, Janina
AU - Müller, Stefanie Jutta Marianne
AU - Kundisch, Dennis
ID - 25174
T2 - Proceedings of the 42nd International Conference on Information Systems (ICIS)
TI - Moment or Movement – An Empirical Analysis of the Heterogeneous Impact of Media Attention on Charitable Crowdfunding Campaigns
ER -
TY - CONF
AU - Poniatowski, Martin
AU - Seutter, Janina
AU - Kundisch, Dennis
ID - 25178
T2 - Proceedings of the 42nd International Conference on Information Systems (ICIS)
TI - "Timing is Everything" — An Empirical Analysis of the Timing of Online Review Elicitation
ER -