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Chatbot Dialog Design for Improved Human Performance in Domain Knowledge Discovery 提高人类在领域知识发现中的表现的聊天机器人对话设计
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2025-01-07 DOI: 10.1109/THMS.2024.3514742
Roland Oruche;Xiyao Cheng;Zian Zeng;Audrey Vazzana;MD Ashraful Goni;Bruce Wang Shibo;Sai Keerthana Goruganthu;Kerk Kee;Prasad Calyam
The advent of machine learning (ML) has led to the widespread adoption of developing task-oriented dialog systems for scientific applications (e.g., science gateways) where voluminous information sources are retrieved and curated for domain users. Yet, there still exists a challenge in designing chatbot dialog systems that achieve widespread diffusion among scientific communities. In this article, we propose a novel Vidura advisor design framework (VADF) to develop dialog system designs for information retrieval (IR) and question-answering (QA) tasks, while enabling the quantification of system utility based on human performance in diverse application environments. We adopt a socio-technical approach in our framework for designing dialog systems by utilizing domain expert feedback, which features a sparse retriever for enabling accurate responses in QA settings using linear interpolation smoothing. We apply our VADF for an exemplar science gateway, viz. KnowCOVID-19, to conduct experiments that demonstrate the utility of dialog systems based on IR and QA performance, application utility, and perceived adoption. Experimental results show our VADF approach significantly improves IR performance against retriever baselines (up to 5% increase) and QA performance against large language models (LLMs) such as ChatGPT (up to 43% increase) on scientific literature datasets. In addition, through a usability survey, we observe that measuring application utility and human performance when applying VADF to KnowCOVID-19 translates to an increase in perceived community adoption.
机器学习(ML)的出现导致开发面向任务的对话系统被广泛采用,用于科学应用程序(例如科学网关),在这些应用程序中,为域用户检索和管理大量信息源。然而,在设计能够在科学界广泛传播的聊天机器人对话系统方面仍然存在着挑战。在本文中,我们提出了一个新的Vidura顾问设计框架(VADF)来开发用于信息检索(IR)和问答(QA)任务的对话系统设计,同时在不同的应用环境中实现基于人的性能的系统效用量化。我们在我们的框架中采用社会技术方法,通过利用领域专家反馈来设计对话系统,该框架具有稀疏检索器,可以使用线性插值平滑在QA设置中实现准确的响应。我们将我们的VADF应用于一个范例科学网关,即KnowCOVID-19,以进行实验,证明基于IR和QA性能、应用程序实用性和感知采用率的对话系统的实用性。实验结果表明,我们的VADF方法在科学文献数据集上显著提高了针对检索器基线的IR性能(提高了5%)和针对大型语言模型(llm)(如ChatGPT)的QA性能(提高了43%)。此外,通过一项可用性调查,我们观察到,在将VADF应用于KnowCOVID-19时,衡量应用程序的效用和人的性能可以转化为感知社区采用率的提高。
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引用次数: 0
Human-Following Control Method Based on Adaptive Recurrent PID Controller With Self-Tuning Filter 基于自适应递归PID自整定滤波器的人随动控制方法
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2024-12-27 DOI: 10.1109/THMS.2024.3515045
Wenfeng Li;Jinglong Zhou;Shaoyong Jiang;Chaoqun Wang;Anning Yang
The research on human-following robot is important for practical applications. It is a hot field of human–machine technology. This article proposes an adaptive recurrent proportional integral differential (PID) control algorithm with self-tuning filter based on vision to address the issue of insufficient recognition accuracy of specific following targets in the presence of occlusion, multiple people, or deformation. It also aims to further improve the control accuracy and immunity of a human-following robot. First, a depth camera-based red green blue (RGB) picture and a depth image are acquired. The person reidentification algorithm and the YOLOv8 algorithm are used to detect and track the targets. The spatial position information of the targets is calculated by the depth image. Additionally, the orientation proportional differential (PD) controller and the speed proportional integral (PI) controller are built. Its foundation is the discrepancy between the relative posture of the user and the robot. In order to minimize sensor data fluctuations and lessen the negative impacts of relative positional instability, a self-tuning filter is developed. To remember the relative postures between the robot and the user in the history window, an adaptive recurrent mechanism is suggested. The controller has the ability to output the control quantity in an adaptive manner based on the current system state. Finally, experiments are conducted to verify the reliability of the proposed method. The experimental findings demonstrate that the visual pedestrian tracking algorithm proposed in this article is highly adaptable. Compared to the traditional PID, fractional-order PID, and virtual spring model, our method demonstrates significant enhancements, reducing the average distance error by 64.29%, 57.14%, and 60.52% in steering scenarios, and by 42.86%, 40.00%, and 40.00% in straight-ahead scenarios, respectively.
人类跟随机器人的研究对实际应用具有重要意义。它是人机技术的一个热点领域。本文提出了一种基于视觉自整定滤波器的自适应递归比例积分微分(PID)控制算法,以解决在存在遮挡、多人或变形的情况下对特定跟随目标识别精度不足的问题。进一步提高人类跟随机器人的控制精度和免疫能力。首先,获取基于深度相机的红绿蓝(RGB)图像和深度图像。人员再识别算法和YOLOv8算法用于检测和跟踪目标。利用深度图像计算目标的空间位置信息。此外,还构建了方向比例微分(PD)控制器和速度比例积分(PI)控制器。它的基础是用户和机器人的相对姿态之间的差异。为了使传感器数据波动最小化,减少相对位置不稳定性的负面影响,开发了一种自整定滤波器。为了在历史窗口中记住机器人和用户之间的相对姿态,提出了一种自适应循环机制。控制器具有根据当前系统状态自适应输出控制量的能力。最后,通过实验验证了所提方法的可靠性。实验结果表明,本文提出的视觉行人跟踪算法具有很强的适应性。与传统PID、分数阶PID和虚拟弹簧模型相比,我们的方法在转向场景下的平均距离误差分别降低了64.29%、57.14%和60.52%,在直线行驶场景下的平均距离误差分别降低了42.86%、40.00%和40.00%。
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引用次数: 0
Cognitive Load-Based Affective Workload Allocation for Multihuman Multirobot Teams 基于认知负荷的多人多机器人团队情感工作量分配
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2024-12-27 DOI: 10.1109/THMS.2024.3509223
Wonse Jo;Ruiqi Wang;Baijian Yang;Daniel Foti;Mo Rastgaar;Byung-Cheol Min
The interaction and collaboration between humans and multiple robots represent a novel field of research known as human multirobot systems. Adequately designed systems within this field allow teams composed of both humans and robots to work together effectively on tasks, such as monitoring, exploration, and search and rescue operations. This article presents a deep reinforcement learning-based affective workload allocation controller specifically for multihuman multirobot teams. The proposed controller can dynamically reallocate workloads based on the performance of the operators during collaborative missions with multirobot systems. The operators' performances are evaluated through the scores of a self-reported questionnaire (i.e., subjective measurement) and the results of a deep learning-based cognitive workload prediction algorithm that uses physiological and behavioral data (i.e., objective measurement). To evaluate the effectiveness of the proposed controller, we conduct an exploratory user experiment with various allocation strategies. The user experiment uses a multihuman multirobot CCTV monitoring task as an example and carry out comprehensive real-world experiments with 32 human subjects for both quantitative measurement and qualitative analysis. Our results demonstrate the performance and effectiveness of the proposed controller and highlight the importance of incorporating both subjective and objective measurements of the operators' cognitive workload as well as seeking consent for workload transitions, to enhance the performance of multihuman multirobot teams.
人与多机器人之间的相互作用和协作代表了一个新的研究领域,即人多机器人系统。在这一领域中,充分设计的系统允许由人类和机器人组成的团队有效地共同完成任务,如监测、探索、搜索和救援行动。针对多人多机器人团队,提出了一种基于深度强化学习的情感工作量分配控制器。在多机器人协同任务中,该控制器可以根据操作者的表现动态地重新分配工作负载。通过自我报告的问卷得分(即主观测量)和基于深度学习的认知工作量预测算法的结果(即客观测量)来评估操作员的绩效。为了评估所提出的控制器的有效性,我们使用各种分配策略进行探索性用户实验。用户实验以多人多机器人CCTV监控任务为例,对32名人体受试者进行了全面的真实世界实验,进行了定量测量和定性分析。我们的研究结果证明了所提出的控制器的性能和有效性,并强调了结合操作员认知工作量的主观和客观测量以及寻求工作量转换同意的重要性,以提高多人多机器人团队的绩效。
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引用次数: 0
Modeling Shared Control System Between Human Pilot and Autopilot for a Carrier-Based Aircraft Landing Task 舰载机着陆任务中驾驶员与自动驾驶仪共享控制系统建模
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2024-12-19 DOI: 10.1109/THMS.2024.3502178
Shuting Xu;Wenqian Tan;Liguo Sun
This article proposes a shared control system model between the human pilot and autopilot for the special issue of carrier-based aircraft landing task. A key point of the shared and cooperative control is that the decision-sharing system depends on the longitudinal safety boundaries for manual/automatic landing. Two strategies of the human pilot are adopted, including capture strategy and tracking strategy. A hidden model tracking control method is utilized to model the autopilot. To address the issue of frequent switching between the human pilot and autopilot caused by relying solely on safety boundaries to allocate control authority, fuzzy control theory is introduced to reduce the workload of the human pilot. The time-domain simulation results show that considering the fuzzy control, the frequency of switching and the flight states have been improved compared with the results without fuzzy control. Nonlinear pilot-induced oscillation metric evaluation results show that the human-automation shared and cooperative control considering the fuzzy control can alleviate the workload of the human pilot. The shared and cooperative control system model has certain significance in ensuring the safety of carrier-based aircraft landing.
针对舰载机着舰任务的特殊性,提出了一种人类驾驶员与自动驾驶仪之间的共享控制系统模型。共享协同控制的关键是决策共享系统依赖于手动/自动着陆的纵向安全边界。采用了人类飞行员的两种策略,捕获策略和跟踪策略。采用隐模型跟踪控制方法对自动驾驶仪进行建模。针对单纯依靠安全边界来分配控制权限导致驾驶员与自动驾驶仪频繁切换的问题,引入模糊控制理论,减少驾驶员的工作量。时域仿真结果表明,与不加模糊控制的结果相比,考虑模糊控制后的切换频率和飞行状态都得到了改善。非线性驾驶员诱导振荡度量评价结果表明,考虑模糊控制的人机共享协同控制可以减轻驾驶员的工作量。共享协同控制系统模型对保障舰载机安全着舰具有一定的意义。
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引用次数: 0
Fatigue Assessment and Control With Lower Limb Exoskeletons 下肢外骨骼的疲劳评估与控制
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2024-12-11 DOI: 10.1109/THMS.2024.3503473
Lukas Bergmann;Lea Hansmann;Philip von Platen;Steffen Leonhardt;Chuong Ngo
Acknowledging the vital importance of fatigue management for improving rehabilitation results, customizing treatment, safeguarding patient well-being, and enhancing the quality of life of hemiplegic patients, this study presents the development of a tailored fatigue model and a corresponding human-in-the-loop (HiL) control system for exoskeleton-assisted walking. For this, the selected three-compartment controller fatigue model including a resting recovery parameter was adapted to a dynamic walking task scenario, incorporating a torque–velocity–angle dependency to quantify muscle activity. The model parameters were experimentally verified in a study with six healthy subjects, demonstrating accurate prediction of maximum voluntary contraction (MVC) decline with an average mean absolute error of 4.9%MVC. Subsequently, an HiL control mechanism was developed, utilizing ratings of perceived fatigue and state of fatigue values as reference metrics. The presented control approach effectively regulates fatigue levels within a 0%MVC–6%MVC steady-state error range during simulations. Experimental validation confirmed this performance, however, with partly higher steady-state errors mainly due to the restrictions of the exoskeleton's assistance. This preliminary study provides a promising foundation for future research, demonstrating the potential to manage fatigue effectively in exoskeleton users, offering an improved, personalized experience.
认识到疲劳管理对于改善康复效果、定制治疗、保障患者福祉和提高偏瘫患者生活质量的重要性,本研究提出了针对外骨骼辅助行走的定制疲劳模型和相应的人在环(HiL)控制系统的开发。为此,所选择的包含静息恢复参数的三室控制器疲劳模型适用于动态步行任务场景,结合扭矩-速度角依赖性来量化肌肉活动。在6名健康受试者的实验中验证了模型参数的准确性,平均绝对误差为4.9%,可以准确预测最大自主收缩(MVC)下降。随后,开发了一种HiL控制机制,利用感知疲劳等级和疲劳状态值作为参考指标。在仿真过程中,所提出的控制方法在0%MVC-6%MVC稳态误差范围内有效地调节了疲劳水平。实验验证证实了这一性能,然而,部分较高的稳态误差主要是由于外骨骼的辅助限制。这项初步研究为未来的研究提供了有希望的基础,展示了有效管理外骨骼用户疲劳的潜力,提供了改进的个性化体验。
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引用次数: 0
A Game-Theoretic Model of Trust in Human–Robot Teaming: Guiding Human Observation Strategy for Monitoring Robot Behavior 人-机器人团队信任的博弈论模型:指导人类监控机器人行为的观察策略
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2024-12-04 DOI: 10.1109/THMS.2024.3488559
Zahra Zahedi;Sailik Sengupta;Subbarao Kambhampati
In scenarios involving robots generating and executing plans, conflicts can arise between cost-effective robot execution and meeting human expectations for safe behavior. When humans supervise robots, their accountability increases, especially when robot behavior deviates from expectations. To address this, robots may choose a highly constrained plan when monitored and a more optimal one when unobserved. While this behavior is not driven by human-like motives, it stems from robots accommodating diverse supervisors. To optimize monitoring costs while ensuring safety, we model this interaction in a trust-based game-theoretic framework. However, pure-strategy Nash equilibrium often fails to exist in this model. To address this, we introduce the concept of a trust boundary within the mixed strategy space, aiding in the discovery of optimal monitoring strategies. Human studies demonstrate the necessity of optimal strategies and the benefits of our suggested approaches.
在涉及机器人生成和执行计划的场景中,成本效益高的机器人执行和满足人类对安全行为的期望之间可能会出现冲突。当人类监督机器人时,他们的责任就会增加,尤其是当机器人的行为偏离预期时。为了解决这个问题,机器人可能会在被监视时选择一个高度受限的计划,而在不被监视时选择一个更优的计划。虽然这种行为不是由类似人类的动机驱动的,但它源于机器人适应不同的主管。为了在确保安全的同时优化监测成本,我们在基于信任的博弈论框架中对这种相互作用进行了建模。然而,在该模型中往往不存在纯策略纳什均衡。为了解决这个问题,我们在混合策略空间中引入了信任边界的概念,以帮助发现最佳监控策略。人体研究证明了最佳策略的必要性和我们建议的方法的好处。
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引用次数: 0
2024 Index IEEE Transactions on Human-Machine Systems Vol. 54 2024索引IEEE人机系统交易卷54
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2024-12-03 DOI: 10.1109/THMS.2024.3509052
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引用次数: 0
Individual Performance in Women's Grassroots Football: A Physical and Emotional Perspective 女子基层足球的个人表现:身体和情感的视角
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2024-11-28 DOI: 10.1109/THMS.2024.3489795
Luis A. Oliveira Rodríguez;Roberto García Fernández;David Melendi Palacio
It is essential to monitor and follow up with athletes, both from the point of view of physical and emotional well-being. This allows optimizing the strategy to be followed to achieve full individual and collective development, thus resulting in an improvement in performance, which helps in the prevention of injuries, and better collective work. This is especially important in the early stages of an athlete's career. The present study is based on a follow-up survey consisting of 117 female football players ranging from 10 and 20 years old, making it one of the first studies amongst this age group. A low-cost electronic performance and tracking system was developed to gather data on the players. During the training sessions, objective data (position, distances, etc.) and subjective parameters were collected using forms based on the rate of perceived exertion. This article deals with the evolution of the player's performance from both a physical and mental point of view. An emotional evaluation, based on well-being forms, is carried out and its possible influence on training. Finally, analysis is conducted on the level of health risk. It was found that the performance of female footballers improves with age and in competition-like situations. It has also been concluded that sporting activity leads to healthy lifestyle habits, which translates into a lower risk to their health.
从身体和情感健康的角度来看,对运动员进行监测和随访是至关重要的。这可以优化策略,以实现充分的个人和集体发展,从而导致性能的提高,这有助于预防伤害,更好的集体工作。这在运动员职业生涯的早期阶段尤为重要。目前的研究是基于对117名10到20岁的女足球运动员的后续调查,这是对这个年龄段的第一次研究。开发了一种低成本的电子性能和跟踪系统来收集球员的数据。在训练过程中,使用基于感知用力率的表格收集客观数据(位置、距离等)和主观参数。这篇文章将从身体和心理两个角度探讨球员表现的演变。基于幸福感形式的情绪评估及其对训练的可能影响进行了研究。最后,对健康风险水平进行分析。研究发现,女足球运动员的表现随着年龄的增长和在类似比赛的情况下有所提高。研究还得出结论,体育活动可以形成健康的生活习惯,从而降低健康风险。
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引用次数: 0
IEEE Systems, Man, and Cybernetics Society Information 电气和电子工程师学会系统、人和控制论学会信息
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2024-11-22 DOI: 10.1109/THMS.2024.3497077
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引用次数: 0
IEEE Transactions on Human-Machine Systems Information for Authors 电气和电子工程师学会《人机系统学报》(IEEE Transactions on Human-Machine Systems)为作者提供的信息
IF 3.5 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2024-11-22 DOI: 10.1109/THMS.2024.3497079
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引用次数: 0
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IEEE Transactions on Human-Machine Systems
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