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arXiv 2023年

作者： Xu, Yuzhuang wang, Shuo Li, Peng Luo, fuwen wang, Xiaolong Liu, Weidong Liu, Yang Department of Computer Science & Technology Tsinghua University Beijing China Tsinghua University Beijing China Zhongguancun Laboratory Beijing China

Communication games, which we refer to as incomplete information games that heavily depend on natural language communication, hold significant research value in fields such as economics, social science, and artificial intelligence. In this work, we explore the problem of how to engage large language models (LLMs) in communication games, and in response, propose a tuning-free framework. Our approach keeps LLMs frozen, and relies on the retrieval and reflection on past communications and experiences for improvement. An empirical study on the representative and widely-studied communication game, "Werewolf", demonstrates that our framework can effectively play Werewolf game without tuning the parameters of the LLMs. More importantly, strategic behaviors begin to emerge in our experiments, suggesting that it will be a fruitful journey to engage LLMs in communication games and associated domains. © 2023, CC BY.

关键词： Computational linguistics

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Position: Towards Unified Alignment Between Agents, Humans, and Environment 41

Position: Towards Unified Alignment Between Agents, Humans, ...

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41st International Conference on Machine Learning, ICML 2024

作者： Yang, Zonghan Liu, An Liu, Zijun Liu, Kaiming Xiong, Fangzhou wang, Yile Yang, Zeyuan Hu, Qingyuan Chen, Xinrui Zhang, Zhenhe Luo, fuwen Guo, Zhicheng Li, Peng Liu, Yang Dept. of Comp. Sci. & Tech. Institute for AI Tsinghua University Beijing China Tsinghua University Beijing China Jiangsu Collaborative Innovation Center for Language Competence Jiangsu China

The rapid progress of foundation models has led to the prosperity of autonomous agents, which leverage the universal capabilities of foundation models to conduct reasoning, decision-making, and environmental interaction. However, the efficacy of agents remains limited when operating in intricate, realistic environments. In this work, we introduce the principles of Unified Alignment for Agents (UA2), which advocate for the simultaneous alignment of agents with human intentions, environmental dynamics, and self-constraints such as the limitation of monetary budgets. From the perspective of UA2, we review the current agent research and highlight the neglected factors in existing agent benchmarks and method candidates. We also conduct proof-of-concept studies by introducing realistic features to WebShop (Yao et al., 2022a), including user profiles to demonstrate intentions, personalized reranking for complex environmental dynamics, and runtime cost statistics to reflect self-constraints. We then follow the principles of UA2 to propose an initial design of our agent and benchmark its performance with several candidate baselines in the retrofitted WebShop. The extensive experimental results further prove the importance of the principles of UA2. Our research sheds light on the next steps of autonomous agent research with improved general problem-solving abilities. Copyright 2024 by the author(s)

关键词： Budget control

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摩擦力对空间非导电绳系释放动力学的影响

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兵工学报 2024年第4期45卷 1158-1167页

作者：梁福文苗龙田丰宋家辉白松何梓豪王宁飞北京理工大学宇航学院北京100081

当前空间非导电绳系释放过程因摩擦力数据缺乏,导致释放动力学仿真结果不能有效反映真实情况。为此,基于绳系地面释放平台,开展非导电绳系释放摩擦力测量实验,研究了系绳材料、直径、缠绕方向和释放速度对系绳释放所受摩擦力的影响,阐... 详细信息

当前空间非导电绳系释放过程因摩擦力数据缺乏,导致释放动力学仿真结果不能有效反映真实情况。为此,基于绳系地面释放平台,开展非导电绳系释放摩擦力测量实验,研究了系绳材料、直径、缠绕方向和释放速度对系绳释放所受摩擦力的影响,阐明非导电绳系释放过程影响球形效应不稳定现象的主要因素,确定非导电绳系释放摩擦力与释放条件之间的定量关系。进一步建立考虑摩擦力的绳系释放动力学模型。仿真结果表明,非导电绳系释放摩擦力对释放过程影响较大,对于500 m长的系绳,初始释放速度为2 m/s,在未考虑释放摩擦力时,绳系释放完成时间与考虑摩擦力的实际情况相差约20%。

关键词：空间绳系释放摩擦力地面实验释放速度动力学仿真

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How Do Multimodal Large Language Models Handle Complex Multimodal Reasoning? Placing Them in An Extensible Escape Game

arXiv

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arXiv 2025年

作者： wang, Ziyue Dong, Yurui Luo, fuwen Ruan, Minyuan Cheng, Zhili Chen, Chi Li, Peng Liu, Yang Dept. of Comp. Sci. & Tech. Institute for AI Tsinghua University Beijing China Tsinghua University Beijing China School of Management Fudan University Shanghai China

The rapid advancing of Multimodal Large Language Models (MLLMs) has spurred interest in complex multimodal reasoning tasks in the real-world and virtual environment, which require coordinating multiple abilities, including visual perception, visual reasoning, spatial awareness, and target deduction. However, existing evaluations primarily assess the final task completion, often degrading assessments to isolated abilities such as visual grounding and visual question answering. Less attention is given to comprehensively and quantitatively analyzing reasoning process in multimodal environments, which is crucial for understanding model behaviors and underlying reasoning mechanisms beyond merely task success. To address this, we introduce MM-Escape, an extensible benchmark for investigating multimodal reasoning, inspired by real-world escape games. MM-Escape emphasizes intermediate model behaviors alongside final task completion. To achieve this, we develop EscapeCraft, a customizable and open environment that enables models to engage in free-form exploration for assessing multimodal reasoning. Extensive experiments show that MLLMs, regardless of scale, can successfully complete the simplest room escape tasks, with some exhibiting human-like exploration strategies. Yet, performance dramatically drops as task difficulty increases. Moreover, we observe that performance bottlenecks vary across models, revealing distinct failure modes and limitations in their multimodal reasoning abilities, such as repetitive trajectories without adaptive exploration, getting stuck in corners due to poor visual spatial awareness, and ineffective use of acquired props, such as the key. We hope our work sheds light on new challenges in multimodal reasoning, and uncovers potential improvements in MLLMs capabilities. © 2025, CC BY.

关键词： Virtual reality

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Habitat connectivity drives panda recovery

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CURRENT BIOLOGY 2024年第17期34卷 3894-3904.e3页

作者： wang, Meng wang, Guiming Huang, Guangping Kouba, Andy Swaisgood, Ronald R. Zhou, Wenliang Hu, Yibo Nie, Yonggang Wei, fuwen Jiangxi Agr Univ Coll Forestry Jiangxi Prov Key Lab Conservat Biol Nanchang 330045 Peoples R China Chinese Acad Sci Inst Zool Key Lab Anim Ecol & Conservat Biol Beijing 100101 Peoples R China Mississippi State Univ Dept Wildlife Fisheries & Aquaculture Starkville MS 39762 USA Conservat Sci & Wildlife Hlth San Diego Zoo Wildlife Alliance Escondido CA 92027 USA Ctr Evolut & Conservat Biol Southern Marine Sci & Engn Guangdong Lab Guangzhou Guangzhou 511458 Peoples R China

Globally, the majority of habitat loss is irreversible, and most species will never recover their former ranges. We have learned a great deal about what leads to population decline and extinction, but less about recovery. The recently downlisted giant panda provides a unique opportunity to understand the mechanisms of species recovery. In our study, we estimate giant panda suitable habitats, population density, and gene flow across landscapes to fully investigate the direct and indirect ecological mechanisms underlying bold conservation strategies. We found that the Giant Panda National Survey has modestly but systematically underestimated population size. China's effort to mitigate anthropogenic disturbances was associated with increased panda population density through improving habitat quality and reducing habitat fragmentation. Enhanced landscape connectivity reduced inbreeding via gene flow but indirectly increased inbreeding temporarily due to high local panda density. Although the panda's recovery has been geographically uneven, we provide evidence for improving connectivity and gene flow resulting from conservation efforts. If these processes can be sustained and improved, the panda's path to recovery will be less encumbered by loss of genetic diversity, fostering hope that the present rate of recovery will not be stalled. Findings from this study will not only help guide future giant panda conservation management but also provide a model for how a more mechanistic examination of the genetic processes underlying species recovery can foster the development of more effective strategies for endangered species recovery.

关键词： effective population size gene flow genetic diversity giant panda habitat patches landscape connectivity population density species recovery

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基于随机森林SAR图像变化检测方法

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激光杂志 2023年第6期44卷 72-77页

作者：王恒涛张上贾付文三峡大学湖北省建筑质量检测装备工程技术研究中心湖北宜昌443002 三峡大学计算机与信息学院湖北宜昌443002

训练样本标签的正确选择对合成孔径雷达(Synthetic aperture radar,SAR)图像变化检测任务的准确性至关重要。现有的标签获取方法易受噪声影响,导致产生噪声标签进而影响网络性能。而深度神经网络通常需要大量的样本来训练网络参数,在优... 详细信息

训练样本标签的正确选择对合成孔径雷达(Synthetic aperture radar,SAR)图像变化检测任务的准确性至关重要。现有的标签获取方法易受噪声影响,导致产生噪声标签进而影响网络性能。而深度神经网络通常需要大量的样本来训练网络参数,在优化参数方面花费了大量时间,计算复杂度高。为了克服这些问题,提出了一种基于随机森林SAR图像变化检测方法。该方法使用邻域比算子生成差异图,利用阈值法获取初始变化检测结果;接着在初始变化检测结果上利用引导滤波获取目标区域,对目标区域进行预分类,获取可靠样本标签;最后选取随机森林作为分类器,对预分类结果进一步分类。在三组SAR图像数据集上利用三种方法证实了本方法的有效性。

关键词：合成孔径雷达图像变化检测引导滤波随机森林

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ACTIVIEW: EVALUATING ACTIVE PERCEPTION ABILITY FOR MULTIMODAL LARGE LANGUAGE MODELS

arXiv

引用

arXiv 2024年

作者： wang, Ziyue Chen, Chi Luo, fuwen Dong, Yurui Zhang, Yuanchi Xu, Yuzhuang wang, Xiaolong Li, Peng Liu, Yang Dept. of Comp. Sci. & Tech. Institute for AI Tsinghua University Beijing China Tsinghua University Beijing China School of Management Fudan University Shanghai China

Active perception, a crucial human capability, involves setting a goal based on the current understanding of the environment and performing actions to achieve that goal. Despite significant efforts in evaluating Multimodal Large Language Models (MLLMs), active perception has been largely overlooked. To address this gap, we propose a novel benchmark named ActiView1 to evaluate active perception in MLLMs. Since comprehensively assessing active perception is challenging, we focus on a specialized form of Visual Question Answering (VQA) that eases the evaluation yet challenging for existing MLLMs. Given an image, we restrict the perceptual field of a model, requiring it to actively zoom or shift its perceptual field based on reasoning to answer the question successfully. We conduct extensive evaluation over 27 models, including proprietary and open-source models, and observe that the ability to read and comprehend multiple images simultaneously plays a significant role in enabling active perception. Results reveal a significant gap in the active perception capability of MLLMs, indicating that this area deserves more attention. We hope that our benchmark could help develop methods for MLLMs to understand multimodal inputs in more natural and holistic ways. © 2024, CC BY.

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Unity of Nature and Man: a new vision and conceptual framework for the Post-2020 Global Biodiversity Framework

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National Science Review 2021年第7期8卷 21-25页

作者： Tianxiao Ma Yisi Hu Meng wang Lijun Yu fuwen Wei CAS Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences University of Chinese Academy of Sciences Center for Excellence in Animal Evolution and Genetics Chinese Academy of Sciences Center for Evolution and Conservation Biology Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)

People live in nature. However, substantial evidence confirms that, under the pressure of anthropogenic alteration,nature is being fragmented, imperiled and becoming less able to provide essential services [1]. Biodiversity loss is the most significant signal of this depletion,and could profoundly impact the future of human beings and the rest of life on Earth [2].

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Impact of Ni-coated carbon fiber on the interfacial (Cu,Ni)(6)Sn-5 growth of Sn-3.5Ag composite solder on Cu substrate during reflow and isothermal aging

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MATERIALS TODAY COMMUNICATIONS 2022年 31卷

作者： Du, Yihui wang, Yishu Ji, Xiaoliang Jia, Qiang Zhang, fuwen Guo, Fu Beijing Univ Technol Fac Mat & Mfg Beijing 100124 Peoples R China Gen Res Inst Nonferrous Met Beijing 100088 Peoples R China Beijing Compo Adv Technol Co Ltd Beijing 101407 Peoples R China Beijing Univ Technol Key Lab Adv Funct Mat Educ Minist China Beijing 100124 Peoples R China Beijing Union Univ Coll Robot Beijing 100101 Peoples R China

In this work, a novel composite solder was fabricated by mechanically incorporating Ni-coated carbon fiber (NiCF) into the Sn-3.5Ag solder paste in an effort to improve the overall service capability, where the intermetallic compound (IMC) formation and growth is a fundamental issue for consideration. General findings indicated that the addition of Ni-CF did not significantly impact the processing properties of the base alloy, such as melting temperature and wettability, when the reinforcement fraction was less than 2 wt%. Isothermal aging tests were carried out to study the formation and growth of interfacial IMC layers between the composite solder and Cu substrate. The addition of Ni-CF into Sn-3.5Ag solder could effectively promote the formation of interfacial (Cu, Ni)(6)Sn-5 phase during reflow but retard its growth in the solid-state aging. The addition of 1 wt% Ni-CF was believed to be more effective to restrict and reduce the subsequent growth rate of the IMCs during solid-state aging due to the initial formation of a thicker (Cu, Ni)(6)Sn-5 layer after reflow.

关键词： Sn-3.5Ag Nickel-coated carbon fiber Composite solder Isothermal aging Intermetallic compound

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Development of short-target primers for species identification in biological studies of Carnivora

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ECOLOGY AND EVOLUTION 2023年第5期13卷 e10135页

作者： Liu, Huiwen wang, Dan Zhang, Chenglin Pu, Tianchun Xiong, Lijuan Wei, fuwen Hu, Yibo Chinese Acad Sci Inst Zool CAS Key Lab Anim Ecol & Conservat Biol Beijing Peoples R China Univ Chinese Acad Sci Beijing Peoples R China Beijing Zoo Beijing Peoples R China Guizhou Normal Univ Sch Life Sci Guiyang Peoples R China

Noninvasive genetic sampling greatly facilitates studies on the genetics, ecology, and conservation of threatened species. Species identification is often a prerequisite for noninvasive sampling-based biological studies. Due to the low quantity and quality of genomic DNA from noninvasive samples, high-performance short-target PCR primers are necessary for DNA barcoding applications. The order Carnivora is characterized by an elusive habit and threatened status. In this study, we developed three pairs of short-target primers for identifying Carnivora species. The COI279 primer pair was suitable for samples with better DNA quality. The COI157a and COI157b primer pairs performed well for noninvasive samples and reduced the interference of nuclear mitochondrial pseudogenes (numts). COI157a could effectively identify samples from Felidae, Canidae, Viverridae, and Hyaenidae, while COI157b could be applied to samples from Ursidae, Ailuridae, Mustelidae, Procyonidae, and Herpestidae. These short-target primers will facilitate noninvasive biological studies and efforts to conserve Carnivora species.

关键词： Carnivora COI noninvasive sample species identification

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