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High Performance Computing, Networking, Storage and Analysis (SCC), SC Companion:

作者： Akila Gothandaraman Thomas Nason Lee Warren Center for Simulation and Modeling University of Pittsburgh PA USA Department of Electrical and Computer Engineering University of Pittsburgh PA USA Department of Chemistry College of New Rochelle NY USA

We propose a novel disc-based data decomposition algorithm for N-body simulations and compare its performance against a cyclic decomposition algorithm. We implement the data decomposition algorithms towards the calculation of three-body interactions in the Stillinger-Weber potential for a system of water molecules. The performance is studied in terms of load balance behavior and speedup from the MPI implementations of the two algorithms. We are also currently working on a performance study of the disc-based decomposition algorithm on graphics processing units (GPUs).

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BROADENING ACCESS TO simulationS FOR END-USERS VIA LARGE LANGUAGE MODELS: CHALLENGES AND OPPORTUNITIES

arXiv

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arXiv 2024年

作者： Giabbanelli, Philippe J. Padilla, Jose J. Agrawal, Ameeta Virginia Modeling Analysis and Simulation Center Old Dominion University NorfolkVA United States Dept. of Computer Science Portland State University PortlandOR United States

Large Language Models (LLMs) are becoming ubiquitous to create intelligent virtual assistants that assist users in interacting with a system, as exemplified in marketing. Although LLMs have been discussed in modeling & simulation (M&S), the community has focused on generating code or explaining results. We examine the possibility of using LLMs to broaden access to simulations, by enabling non-simulation end-users to ask what-if questions in everyday language. Specifically, we discuss the opportunities and challenges in designing such an end-to-end system, divided into three broad phases. First, assuming the general case in which several simulation models are available, textual queries are mapped to the most relevant model. Second, if a mapping cannot be found, the query can be automatically reformulated and clarifying questions can be generated. Finally, simulation results are produced and contextualized for decision-making. Our vision for such system articulates long-term research opportunities spanning M&S, LLMs, information retrieval, and ethics. © 2024, CC BY-NC-SA.

关键词： Structured Query Language

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Formational parameters and adaptive prototype instantiation for MPEG-4 compliant gesture synthesis

Formational parameters and adaptive prototype instantiation ...

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computer Animation

作者： B. Hartmann M. Mancini C. Pelachaud Center for Human Modeling and Simulation University of Pennsylvania Australia Department of Computer and System Science University of Rome E2809CLa SapienzaE2809D Italy

This paper introduces Gesture Engine, an animation system that synthesizes human gesturing behaviors from augmented conversation transcripts using a database of highlevel gesture definitions. An abstract scripting language to specify hand-arm gestures is introduced that incorporates knowledge from sign language research, psycholinguistics, and traditional keyframe animation. A new planning algorithm instantiates and adjusts gestures according to communicative context and temporal constraints obtained from a speech synthesizer The system animates an MPEG-4 compliant skeleton using Body Animation Parameters.

关键词： Prototypes Animation Engines Humans Databases Handicapped aids Psychology Context Speech synthesis Synthesizers

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A Synchronous Parallel Method with Parameters Communication Prediction for Distributed Machine Learning 19th

A Synchronous Parallel Method with Parameters Communication...

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19th EAI International Conference on Collaborative Computing: Networking, Applications and Worksharing, CollaborateCom 2023

作者： Zeng, Yanguo Xue, Meiting Xu, Peiran Shi, Yukun Zeng, Kaisheng Zhang, Jilin Yue, Lupeng School of Computer Science and Technology Hangzhou Dianzi University Hangzhou310018 China Key Laboratory for Modeling and Simulation of Complex Systems Ministry of Education Hangzhou310018 China Data Security Governance Zhejiang Engineering Research Center Hangzhou310018 China National University of Defense Technology Changsha China School of Cyberspace HangZhou Dianzi University Hangzhou China Department of Computer Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9783031545306

With the development of machine learning technology in various fields, such as medical care, smart manufacturing, etc., the data has exploded. It is a challenge to train a deep learning model for different application domains with large-scale data and limited resources of a single device. The distributed machine-learning technology, which uses a parameter server and multiple clients to train a model collaboratively, is an excellent method to solve this problem. However, it needs much communication between different devices with limited communication resources. The stale synchronous parallel method is a mainstream communication method to solve this problem, but it always leads to high synchronization delay and low computing efficiency as the inappropriate delay threshold value set by the user based on experience. This paper proposes a synchronous parallel method with parameters communication prediction for distributed machine learning. It predicts the optimal timing for synchronization, which can solve the problem of long synchronization waiting time caused by the inappropriate threshold settings in the stale synchronous parallel method. Moreover, it allows fast nodes to continue local training while performing global synchronization, which can improve the resource utilization of work nodes. Experimental results show that compared with the delayed synchronous parallel method, the training time and quality, and resource usage of our method are both significantly improved. © ICST Institute for computer Sciences, Social Informatics and Telecommunications Engineering 2024.

关键词： Forecasting

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Three Layer Game Theoretic Decision Framework for Cyber-Investment and Cyber-Insurance 8th

Three Layer Game Theoretic Decision Framework for Cyber-Inve...

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8th International Conference on Decision and Game Theory for Security, GameSec 2017

作者： Tosh, Deepak K. Vakilinia, Iman Shetty, Sachin Sengupta, Shamik Kamhoua, Charles A. Njilla, Laurent Kwiat, Kevin Department of Computer Science Norfolk State University NorfolkVA United States Department of Computer Science and Engineering University of Nevada RenoNV United States Virginia Modeling Analysis and Simulation Center Old Dominion University NorfolkVA United States Network Security Branch Army Research Laboratory AdelphiMD United States Cyber Assurance Branch Air Force Research Laboratory RomeNY United States

ISBN: (纸本)9783319687100

Cyber-threat landscape has become highly complex, due to which isolated attempts to understand, detect, and resolve cybersecurity issues are not feasible in making a time constrained decisions. Introduction of cyber-threat information (CTI) sharing has potential to handle this issue to some extent, where knowledge about security incidents is gathered, exchanged across organizations for deriving useful information regarding the threat actors and vulnerabilities. Although, sharing security information could allow organizations to make informed decision, it may not completely eliminate the risks. Therefore, organizations are also inclined toward considering cyber-insurance for transferring risks to the insurers. Also, in networked environment, adversaries may exploit the information sharing to successfully breach the participating organizations. In this paper, we consider these players, i.e. organizations, adversary, and insure, to model a three layer game, where players play sequentially to find out their optimal strategies. Organizations determine their optimal self-defense investment to make while participating in CTI sharing and cyber-insurance. The adversary looks for an optimal attack rate while the insurer targets to maximize its profit by offering suitable coverage level to the organizations. Using backward induction approach, we conduct subgame perfect equilibrium analysis to find optimal strategies for the involved players. We observe that when cyber-insurance is not considered, attacker prefers to increase its rate of attack. This motivates the organizations to consider cyber-insurance option for transferring the risks on their critical assets. © 2017, Springer International Publishing AG.

关键词： Game theory

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Assessing Media’s Representation of Frustration Towards Venezuelan Migrants in Colombia 16th

Assessing Media’s Representation of Frustration Towards Ven...

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16th International Conference on Social Computing, Behavioral-Cultural modeling and Prediction and Behavior Representation in modeling and simulation, SBP-BRiMS 2023

作者： Llinas, Brian Huseynli, Guljannat Frydenlund, Erika Palacio, Katherine Llinas, Humberto Padilla, Jose J. Computer Science Department Old Dominion University NorfolkVA United States Graduate Program of International Studies Old Dominion University NorfolkVA United States Virginia Modeling Analysis and Simulation Center Old Dominion University SuffolkVA United States Universidad del Norte Kilómetro 5 Vía Atlántico Puerto Colombia Colombia

ISBN: (纸本)9783031431289

This research utilizes statistical path modeling to examine the relationship between the number of Venezuelans migrating to Colombia due to economic collapse and the media's coverage of specific topics. We focus on media coverage expressing frustration regarding migration, infrastructure, government, and geopolitics. Our approach combines quantitative analysis of code frequencies from qualitative content analysis of 1,360 regional newspaper articles on migration-related issues. Our findings indicate that an increase in the Venezuelan population in Colombia leads to more negative media coverage of infrastructure impacts, such as hospitals and schools. This negative coverage, referred to as "frustration," indirectly contributes to increased coverage of infrastructure frustration. This suggests an opportunity for intervention by balancing media coverage to reduce the excessive use of negative language and stereotypes, potentially mitigating anti-migrant sentiment fueled by frustration towards infrastructure. Furthermore, we observe that as migration increases, coverage of frustration towards geopolitics decreases, while frustration towards the Colombian government rises. This shift may reflect a transition from contemplating the causes of migration to focusing on the humanitarian response (or lack thereof) by the host government in accommodating the new arrivals. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Artificial intelligence

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AW3C XML schema for DEVS scenarios

AW3C XML schema for DEVS scenarios

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2007 Agent Directed simulation Symposium, ADS 2007

作者： Risco Martín, J.L. Mittal, Saurabh López-Peña, M.A. De La Cruz, J.M. Departamento de Arquitectura de Computadores y Automática Universidad Complutense de Madrid Madrid28040 Spain Arizona Center of Integrative Modeling and Simulation Electrical and Computer Engineering Department University of Arizona TucsonAZ85721 United States Sistemas Avanzados de Tecnología S.A. Av. Europa 34a Madrid28023 Spain

ISBN: (纸本)1565553136

There are numerous DEVS-based simulators to configure DEVS systems and run them. Current programs or libraries are based in programming languages such as JAVA, C++, etc. The existence of these different implementations has resulted in the formation of various groups that are not able to share models and cannot capitalize on model reuse. To encourage system modeling and simulator compatibility we propose a standard representation for such models. Such a standard must be simple to manipulate and validate, and promote the integration of DEVS M&S software on different platforms. In this paper we present an XML Schema for representing the structure and the behavior of DEVS coupled scenarios. In addition, we developed a simulator (xDEVS) that can execute these XML-based scenarios over DEVS protocol. We also demonstrate how an Atomic DEVS behavior can be represented using XML by proposing the XML Schema of an atomic model as well. This paper is one of the first papers in the ongoing research on M&S using XML as the communication platform.

关键词： XML

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A new nonlinear oscillator with infinite number of coexisting hidden and self-excited attractors

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Chinese Physics B 2018年第4期27卷 208-213页

作者： Yan-Xia Tang Abdul Jalil M Khalaf Karthikeyan Rajagopal Viet-Thanh Pham Sajad Jafari Ye Tian College of Science Hebei North University Zhangjiakou 075000 China Engineering Technology Research Center of Population Health lnformatization in Hebei Province Zhangjiakou 075000 China Department of Mathematics Faculty of Computer Science and Mathematics University of Kufa Najaf Iraq Department of Electrical and Communication Engineering the PNG University of Technology Lae Centre for Nonlinear Dynamics Defense University Ethiopia Modeling Evolutionary Algorithms Simulation and Artificial Intelligence Faculty of Electrical & Electronics Engineering Ton Duc Thang University Ho Chi Mirth City Vietnam Biomedical Engineering Department Amirkabir University of Technology Tehran 15875-4413 Iran

In this paper,we introduce a new two-dimensional nonlinear oscillator with an infinite number of coexisting limit *** limit cycles form a layer-by-layer structure which is very *** percent of these limit cycles are self-excited attractors while sixty percent of them are hidden *** this new system to its forced version,we introduce a new chaotic system with an infinite number of coexisting strange *** implement this system through field programmable gate arrays.

关键词： chaotic oscillators multistability hidden attractors

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OOTW impact analysis [military simulation]

OOTW impact analysis [military simulation]

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simulation Winter Conference

作者： D.S. Hartley R.E. Bell S.L. Packard Data Systems Research and Development Oak Ridge Federal Facilities Center of Modeling Simulation and GamingComputer Science and Mathematics Oak Ridge National Laboratory Oak Ridge TN USA

The conduct of Operations Other Than War (OOTWs) has become an extremely important part of the US military's responsibility since the end of the Cold War. The factors that influence success and failure in OOTWs are economic, political, sociological, cultural, and psychological factors more often than they are military factors. The paper explores the need for impact analysis support tools, provides a description of the required elements of such tools, and recommends a formal process for creating OOTW impact analysis tools.

关键词： Psychology Failure analysis Weapons Military computing Data systems Research and development Business Cultural differences Disaster management Personnel

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AW3C XML schema for DEVS scenarios

AW3C XML schema for DEVS scenarios

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3rd DEVS Integrative M and S Symposium, DEVS 2007, Part of the 2007 Spring simulation Multiconference, SpringSim 2007

作者： Martín, J. L. Risco Mittal, Saurabh López-Peña, M.A. De La Cruz, J.M. Departamento de Arquitectura de Computadores Y Automática Universidad Complutense de Madrid 28040 Madrid Spain Electrical and Computer Engineering Department Arizona Center of Integrative Modeling and Simulation University of Arizona Tucson AZ 85721 United States Sistemas Avanzados de Tecnología S.A. Av. Europa 34 28023 Madrid Spain

关键词： XML

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