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998 results on '"Hartmann, Sven"'

1. Conceptual Framework for Designing Hippocratic APIs

Author

Rezayat, Sarmad, Burmester, Gerrit, Ma, Hui, Hartmann, Sven, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Maass, Wolfgang, editor, Han, Hyoil, editor, Yasar, Hasan, editor, and Multari, Nick, editor

Published
2025
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2. An MLOps Framework to Data-Driven Modelling of Digital Twins with an Application to Virtual Test Rigs

Author

Kruschinski, Denis, Ngassam, Dylan Tchawou, Durak, Umut, Hartmann, Sven, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Saeki, Motoshi, editor, Wong, Leah, editor, Araujo, João, editor, Ayora, Clara, editor, Bernasconi, Anna, editor, Buffa, Matteo, editor, Castano, Silvana, editor, Fettke, Peter, editor, Fill, Hans-Georg, editor, García S., Alberto, editor, Goulão, Miguel, editor, Griffo, Cristine, editor, Jung, Jin-Taek, editor, Köpke, Julius, editor, Marín, Beatriz, editor, Montanelli, Stefano, editor, Rohrer, Edelweis, editor, and Román, José F. Reyes, editor

Published
2025
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4. A Group Genetic Algorithm for Energy-Efficient Resource Allocation in Container-Based Clouds with Heterogeneous Physical Machines

Author

Fang, Zhengxin, Ma, Hui, Chen, Gang, Hartmann, Sven, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Liu, Tongliang, editor, Webb, Geoff, editor, Yue, Lin, editor, and Wang, Dadong, editor

Published
2024
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6. SFMGNet: A Physics-based Neural Network To Predict Pedestrian Trajectories

Author

Hossain, Sakif, Johora, Fatema T., Müller, Jörg P., Hartmann, Sven, and Reinhardt, Andreas

Subjects
Computer Science - Robotics, Computer Science - Artificial Intelligence
Abstract

Autonomous robots and vehicles are expected to soon become an integral part of our environment. Unsatisfactory issues regarding interaction with existing road users, performance in mixed-traffic areas and lack of interpretable behavior remain key obstacles. To address these, we present a physics-based neural network, based on a hybrid approach combining a social force model extended by group force (SFMG) with Multi-Layer Perceptron (MLP) to predict pedestrian trajectories considering its interaction with static obstacles, other pedestrians and pedestrian groups. We quantitatively and qualitatively evaluate the model with respect to realistic prediction, prediction performance and prediction "interpretability". Initial results suggest, the model even when solely trained on a synthetic dataset, can predict realistic and interpretable trajectories with better than state-of-the-art accuracy., Comment: 16 pages, 6 figures, AAAI-MAKE 2022: Machine Learning and Knowledge Engineering for Hybrid Intelligence

Published
2022

7. Combined Pruning for Nested Cross-Validation to Accelerate Automated Hyperparameter Optimization for Embedded Feature Selection in High-Dimensional Data with Very Small Sample Sizes

Author

May, Sigrun, Hartmann, Sven, and Klawonn, Frank

Subjects
Computer Science - Machine Learning
Abstract

Background: Embedded feature selection in high-dimensional data with very small sample sizes requires optimized hyperparameters for the model building process. For this hyperparameter optimization, nested cross-validation must be applied to avoid a biased performance estimation. The resulting repeated training with high-dimensional data leads to very long computation times. Moreover, it is likely to observe a high variance in the individual performance evaluation metrics caused by outliers in tiny validation sets. Therefore, early stopping applying standard pruning algorithms to save time risks discarding promising hyperparameter sets. Result: To speed up feature selection for high-dimensional data with tiny sample size, we adapt the use of a state-of-the-art asynchronous successive halving pruner. In addition, we combine it with two complementary pruning strategies based on domain or prior knowledge. One pruning strategy immediately stops computing trials with semantically meaningless results for the selected hyperparameter combinations. The other is a new extrapolating threshold pruning strategy suitable for nested-cross-validation with a high variance of performance evaluation metrics. In repeated experiments, our combined pruning strategy keeps all promising trials. At the same time, the calculation time is substantially reduced compared to using a state-of-the-art asynchronous successive halving pruner alone. Up to 81.3\% fewer models were trained achieving the same optimization result. Conclusion: The proposed combined pruning strategy accelerates data analysis or enables deeper searches for hyperparameters within the same computation time. This leads to significant savings in time, money and energy consumption, opening the door to advanced, time-consuming analyses.

Published
2022

10. Energy-Efficient and Communication-Aware Resource Allocation in Container-Based Cloud with Group Genetic Algorithm

Author

Fang, Zhengxin, Ma, Hui, Chen, Gang, Hartmann, Sven, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Monti, Flavia, editor, Rinderle-Ma, Stefanie, editor, Ruiz Cortés, Antonio, editor, Zheng, Zibin, editor, and Mecella, Massimo, editor

Published
2023
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11. A Conceptual Modeling Approach for Risk Assessment and Mitigation in Collision-Free UAV Routing Planning for Beyond-the-Visual-Line-of-Sight Flights

Author

Burmester, Gerrit, Kugelmann, David, Steinmetz, Dietrich, Ma, Hui, Hartmann, Sven, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Almeida, João Paulo A., editor, Borbinha, José, editor, Guizzardi, Giancarlo, editor, Link, Sebastian, editor, and Zdravkovic, Jelena, editor

Published
2023
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12. Stepwise assembly of the active site of [NiFe]-hydrogenase

Author

Caserta, Giorgio, Hartmann, Sven, Van Stappen, Casey, Karafoulidi-Retsou, Chara, Lorent, Christian, Yelin, Stefan, Keck, Matthias, Schoknecht, Janna, Sergueev, Ilya, Yoda, Yoshitaka, Hildebrandt, Peter, Limberg, Christian, DeBeer, Serena, Zebger, Ingo, Frielingsdorf, Stefan, and Lenz, Oliver

Published
2023
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13. Location-Aware Cloud Service Brokering in Multi-cloud Environment

Author

Shi, Tao, Hartmann, Sven, Chen, Gang, Ma, Hui, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Troya, Javier, editor, Mirandola, Raffaela, editor, Navarro, Elena, editor, Delgado, Andrea, editor, Segura, Sergio, editor, Ortiz, Guadalupe, editor, Pautasso, Cesare, editor, Zirpins, Christian, editor, Fernández, Pablo, editor, and Ruiz-Cortés, Antonio, editor

Published
2023
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14. Memetic EDA-Based Approaches to Comprehensive Quality-Aware Automated Semantic Web Service Composition

Author

Wang, Chen, Ma, Hui, Chen, Gang, and Hartmann, Sven

Subjects
Computer Science - Artificial Intelligence, Computer Science - Software Engineering
Abstract

Comprehensive quality-aware automated semantic web service composition is an NP-hard problem, where service composition workflows are unknown, and comprehensive quality, i.e., Quality of services (QoS) and Quality of semantic matchmaking (QoSM) are simultaneously optimized. The objective of this problem is to find a solution with optimized or near-optimized overall QoS and QoSM within polynomial time over a service request. In this paper, we proposed novel memetic EDA-based approaches to tackle this problem. The proposed method investigates the effectiveness of several neighborhood structures of composite services by proposing domain-dependent local search operators. Apart from that, a joint strategy of the local search procedure is proposed to integrate with a modified EDA to reduce the overall computation time of our memetic approach. To better demonstrate the effectiveness and scalability of our approach, we create a more challenging, augmented version of the service composition benchmark based on WSC-08 \cite{bansal2008wsc} and WSC-09 \cite{kona2009wsc}. Experimental results on this benchmark show that one of our proposed memetic EDA-based approach (i.e., MEEDA-LOP) significantly outperforms existing state-of-the-art algorithms.

Published
2019
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15. Evolutionary Multitasking for Semantic Web Service Composition

Author

Wang, Chen, Ma, Hui, Chen, Gang, and Hartmann, Sven

Subjects
Computer Science - Artificial Intelligence
Abstract

Web services are basic functions of a software system to support the concept of service-oriented architecture. They are often composed together to provide added values, known as web service composition. Researchers often employ Evolutionary Computation techniques to efficiently construct composite services with near-optimized functional quality (i.e., Quality of Semantic Matchmaking) or non-functional quality (i.e., Quality of Service) or both due to the complexity of this problem. With a significant increase in service composition requests, many composition requests have similar input and output requirements but may vary due to different preferences from different user segments. This problem is often treated as a multi-objective service composition so as to cope with different preferences from different user segments simultaneously. Without taking a multi-objective approach that gives rise to a solution selection challenge, we perceive multiple similar service composition requests as jointly forming an evolutionary multi-tasking problem in this work. We propose an effective permutation-based evolutionary multi-tasking approach that can simultaneously generate a set of solutions, with one for each service request. We also introduce a neighborhood structure over multiple tasks to allow newly evolved solutions to be evaluated on related tasks. Our proposed method can perform better at the cost of only a fraction of time, compared to one state-of-art single-tasking EC-based method. We also found that the use of the proper neighborhood structure can enhance the effectiveness of our approach.

Published
2019

21. A Modeling Rule for Improving the Performance of Graph Models

Author

Steinmetz, Dietrich, Merz, Felix, Burmester, Gerrit, Ma, Hui, Hartmann, Sven, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Ralyté, Jolita, editor, Chakravarthy, Sharma, editor, Mohania, Mukesh, editor, Jeusfeld, Manfred A., editor, and Karlapalem, Kamalakar, editor

Published
2022
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23. Minimum Weight Flat Antichains of Subsets

Author

Griggs, Jerrold R., Hartmann, Sven, Kalinowski, Thomas, Leck, Uwe, and Roberts, Ian T.

Subjects
Mathematics - Combinatorics, Computer Science - Discrete Mathematics, 05D05
Abstract

Building on classical theorems of Sperner and Kruskal-Katona, we investigate antichains $\mathcal F$ in the Boolean lattice $B_n$ of all subsets of $[n]:=\{1,2,\dots,n\}$, where $\mathcal F$ is flat, meaning that it contains sets of at most two consecutive sizes, say $\mathcal F=\mathcal{A}\cup\mathcal{B}$, where $\mathcal{A}$ contains only $k$-subsets, while $\mathcal{B}$ contains only $(k-1)$-subsets. Moreover, we assume $\mathcal{A}$ consists of the first $m$ $k$-subsets in squashed (colexicographic) order, while $\mathcal{B}$ consists of all $(k-1)$-subsets not contained in the subsets in $\mathcal{A}$. Given reals $\alpha,\beta>0$, we say the weight of $\mathcal F$ is $\alpha\cdot|\mathcal{A}|+\beta\cdot|\mathcal{B}|$. We characterize the minimum weight antichains $\mathcal F$ for any given $n,k,\alpha,\beta$, and we do the same when in addition $\mathcal F$ is a maximal antichain. We can then derive asymptotic results on both the minimum size and the minimum Lubell function.

Published
2017
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24. Location-Aware and Budget-Constrained Service Brokering in Multi-Cloud via Deep Reinforcement Learning

Author

Shi, Tao, Ma, Hui, Chen, Gang, Hartmann, Sven, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Hacid, Hakim, editor, Kao, Odej, editor, Mecella, Massimo, editor, Moha, Naouel, editor, and Paik, Hye-young, editor

Published
2021
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25. A Conceptual Modelling Approach for the Discovery and Management of Platoon Routes

Author

Steinmetz, Dietrich, Hartmann, Sven, Ma, Hui, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Ghose, Aditya, editor, Horkoff, Jennifer, editor, Silva Souza, Vítor E., editor, Parsons, Jeffrey, editor, and Evermann, Joerg, editor

Published
2021
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27. Diagnosis of Bearing Faults in Electrical Machines Using Long Short-Term Memory (LSTM)

Author

Sabir, Russell, Rosato, Daniele, Hartmann, Sven, Gühmann, Clemens, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Wani, M. Arif, editor, Khoshgoftaar, Taghi M., editor, and Palade, Vasile, editor

Published
2021
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28. A Conceptual Framework for Dynamic Planning of Alternative Routes in Road Networks

Author

Hartmann, Sven, Alshami, Jack, Ma, Hui, Steinmetz, Dietrich, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Dobbie, Gillian, editor, Frank, Ulrich, editor, Kappel, Gerti, editor, Liddle, Stephen W., editor, and Mayr, Heinrich C., editor

Published
2020
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32. Towards Robust Web Service Composition with Stochastic Service Failures Based on a Genetic Algorithm

Author

Wang, Chen, Ma, Hui, Chen, Gang, Hartmann, Sven, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Liu, Jixue, editor, and Bailey, James, editor

Published
2019
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33. A Graph Model for Taxi Ride Sharing Supported by Graph Databases

Author

Steinmetz, Dietrich, Merz, Felix, Ma, Hui, Hartmann, Sven, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Laender, Alberto H. F., editor, Pernici, Barbara, editor, Lim, Ee-Peng, editor, and de Oliveira, José Palazzo M., editor

Published
2019
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37. Extending the CMMI Engineering Process Areas for Simulation Systems Engineering

Author

Mahmoodi, Somaye, Durak, Umut, Gerlach, Torsten, Hartmann, Sven, D’Ambrogio, Andrea, Barbosa, Simone Diniz Junqueira, Series Editor, Filipe, Joaquim, Series Editor, Kotenko, Igor, Series Editor, Sivalingam, Krishna M., Series Editor, Washio, Takashi, Series Editor, Yuan, Junsong, Series Editor, Zhou, Lizhu, Series Editor, Baum, Marcus, editor, Brenner, Gunther, editor, Grabowski, Jens, editor, Hanschke, Thomas, editor, Hartmann, Stefan, editor, and Schöbel, Anita, editor

Published
2018
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38. Fuel Efficient Truck Platooning with Time Restrictions and Multiple Speeds Solved by a Particle Swarm Optimisation

Author

Nourmohammadzadeh, Abtin, Hartmann, Sven, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Weikum, Gerhard, Series Editor, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Fagan, David, editor, Martín-Vide, Carlos, editor, O'Neill, Michael, editor, and Vega-Rodríguez, Miguel A., editor

Published
2018
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39. Towards Fully Automated Semantic Web Service Composition Based on Estimation of Distribution Algorithm

Author

Wang, Chen, Ma, Hui, Chen, Gang, Hartmann, Sven, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Mitrovic, Tanja, editor, Xue, Bing, editor, and Li, Xiaodong, editor

Published
2018
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40. Knowledge-Driven Automated Web Service Composition—An EDA-Based Approach

Author

Wang, Chen, Ma, Hui, Chen, Aaron, Hartmann, Sven, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Hacid, Hakim, editor, Cellary, Wojciech, editor, Wang, Hua, editor, Paik, Hye-Young, editor, and Zhou, Rui, editor

Published
2018
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41. Using a Conceptual Model to Transform Road Networks from OpenStreetMap to a Graph Database

Author

Steinmetz, Dietrich, Dyballa, Daniel, Ma, Hui, Hartmann, Sven, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Trujillo, Juan C., editor, Davis, Karen C., editor, Du, Xiaoyong, editor, Li, Zhanhuai, editor, Ling, Tok Wang, editor, Li, Guoliang, editor, and Lee, Mong Li, editor

Published
2018
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46. Correction to: Database and Expert Systems Applications

Author

Hartmann, Sven, Küng, Josef, Kotsis, Gabriele, Tjoa, A Min, Khalil, Ismail, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Hartmann, Sven, editor, Küng, Josef, editor, Kotsis, Gabriele, editor, Tjoa, A Min, editor, and Khalil, Ismail, editor

Published
2020
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49. GP-Based Approach to Comprehensive Quality-Aware Automated Semantic Web Service Composition

Author

Wang, Chen, Ma, Hui, Chen, Aaron, Hartmann, Sven, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Shi, Yuhui, editor, Tan, Kay Chen, editor, Zhang, Mengjie, editor, Tang, Ke, editor, Li, Xiaodong, editor, Zhang, Qingfu, editor, Tan, Ying, editor, Middendorf, Martin, editor, and Jin, Yaochu, editor

Published
2017
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50. A Fast Heuristic for Finding Near-Optimal Groups for Vehicle Platooning in Road Networks

Author

Steinmetz, Dietrich, Burmester, Gerrit, Hartmann, Sven, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Benslimane, Djamal, editor, Damiani, Ernesto, editor, Grosky, William I., editor, Hameurlain, Abdelkader, editor, Sheth, Amit, editor, and Wagner, Roland R., editor

Published
2017
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