Results 61 to 70 of about 16,442 (238)
智能科学与技术学报, 2021 与中英文相比，藏文实体关系训练语料规模较小，传统有监督的学习方法难以获得较高的准确率。针对基于远程监督的实体关系抽取存在错误标记的问题，利用远程监督方法将知识库与文本对齐，构建藏文实体关系抽取的数据集，提出一个基于多级注意力融合机制的藏文实体关系抽取模型。在词级别引入自注意力机制来提取单词的内部特征，在句子级别引入注意力机制为每个实例分配权重，从而充分利用包含信息的句子，减少噪声实例的权重。同时引入联合评分函数，修正远程监督的错误标签，并将神经网络与支持向量机结合，实现藏文实体关系分类。实验结果表明 ...
王丽客, 孙媛, 刘思思
doaj
Including the urbanization gradient in people‐centered wildlife conservation in Amazonia
Conservation Biology, Volume 39, Issue 3, June 2025.Abstract Conservation policy in the Amazon traditionally focuses on rural areas, overlooking the socioecological roles of urban populations. This oversight can hinder sustainability by neglecting rural–urban connections. We compared the prevalence and quantity of wild meat consumed, bartered, and traded commercially in rural, peri‐urban, and urban ...
Lísley P. Lemos +3 more
wiley +1 more source
Dual-target WOA spectrum sharing algorithm based on Stackelberg game [PDF]
, 2020 In order to solve the complex spectrum allocation problem,a dual-target whale optimization algorithm (WOA) with strong parallel computing capabilities was introduced,and a Stackelberg game model was proposed that could effectively reflect the actual ...
Li ZHANG, Tian LIAO, Yejun HE
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Politics &Policy, Volume 53, Issue 3, June 2025.ABSTRACT Climate change is increasing pressure on policymakers and the public to face perceived trade‐offs between economic growth and environmental sustainability, but is it possible to fulfill human needs within the ecological limits of the planet? This article investigates how the public prioritizes this trade‐off. We analyze the drivers of citizens'
Soomin Oh, David Hudson, Jennifer Hudson
wiley +1 more source
, 2012 1994年起实行的分税制改革改变了当时的地方财政包干制,同时带有很大的过渡性质,已经出现了程度不同的问题,最突出的就是中央与地方事权划分不明确,存在着越位、缺位、错位现象。本文从公共部门经济学的角度,分析近年来事权存在的问题,从财政支出角度提出事权划分范围,并运用数学建模的方法,利用柯布—道格拉斯生产函数求解中央与地方政府的责任分配,寻求最优分权 ...
王玥
core
Improved variable step-size LMS algorithm based on hyperbolic tangent function [PDF]
, 2020 In order to improve that the LMS algorithm for determining step size cannot satisfy both rapid convergence and low steady-state misalignment errors,a variable step size algorithm (IVSSLMS) based on an improved hyperbolic tangent function was proposed.The
Hao YU, Jianwu ZHANG, Qianhua ZHANG
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How Patterns of Democracy Impact Policy Processes: When Lijphart and Sabatier Meet
European Policy Analysis, Volume 11, Issue 2, Page 254-270, Spring 2025.ABSTRACT Policy process theories and institutional theories are two foundational strands in political science, both concerned with how people engage in politics. However, they differ in their focus, with policy process theories emphasizing the roles of actors, while institutional theories concentrate on the structures in which these actors are embedded.
Karin Ingold +4 more
wiley +1 more source
Adaptive spectrum sensing algorithm based on cyclostationary spectrum energy [PDF]
, 2011 Focused on the characteristic of cyclostationary spectrum of signal and the spectrum sensing in low signal-to-noise ratio,an adaptive decision threshold spectrum sensing algorithm was proposed,which combines cyclostationary spectrum sensing with energy ...
Hao-ye ZHANG +2 more
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Zhejiang Daxue xuebao. Lixue ban, 2009 心理声学模型已经成功地应用于音频编码技术中,将心理声学模型应用到CELP语音编码技术中,构造新的感知加权滤波器,可以有效地提高合成语音的质量,但如何减少其算法的复杂度是CELP算法的一个关键.提出了LSP系数插值和滤波器系数插值两种新方法,以替代子帧中的心理声学模型掩蔽曲线的计算和转化,有效地减少其算法的复杂度.实验结果表明：在语音质量基本一致的情况下,LSP系数插值和滤波器系数插值两种算法的平均编码时间与原来相比分别减少18%和53%.该算法具有一般性,可以推广到其他CELP编码器的心理声学模型应用中.
HUKai-liang(胡锴亮) +2 more
doaj +1 more source
China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Antipode, Volume 57, Issue 3, Page 830-861, May 2025.Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley +1 more source