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2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)最新文献

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Music emotion recognition with adaptive aggregation of Gaussian process regressors 基于高斯过程回归量自适应聚合的音乐情感识别
Satoru Fukayama, Masataka Goto
This paper describes a novel method for estimating the emotions elicited by a piece of music from its acoustic signals. Previous research in this field has centered on finding effective acoustic features and regression methods to relate features to emotions. The state-of-the-art method is based on a multi-stage regression, which aggregates the results from different regressors trained with training data. However, after training, the aggregation happens in a fixed way and cannot be adapted to acoustic signals with different musical properties. We propose a method that adapts the aggregation by taking into account new acoustic signal inputs. Since we cannot know the emotions elicited by new inputs beforehand, we need a way of adapting the aggregation weights. We do so by exploiting the deviation observed in the training data using Gaussian process regressions. We confirmed with an experiment comparing different aggregation approaches that our adaptive aggregation is effective in improving recognition accuracy.
本文描述了一种从音乐的声音信号中估计音乐所引起的情感的新方法。该领域之前的研究主要集中在寻找有效的声学特征和将特征与情绪联系起来的回归方法。最先进的方法是基于多阶段回归,它汇总了用训练数据训练的不同回归器的结果。然而,经过训练后,聚合以固定的方式发生,不能适应具有不同音乐属性的声学信号。我们提出了一种通过考虑新的声信号输入来适应聚合的方法。由于我们无法事先知道新输入所引发的情绪,我们需要一种调整聚合权重的方法。我们通过利用高斯过程回归在训练数据中观察到的偏差来做到这一点。通过对不同聚合方法的对比实验,证明了自适应聚合在提高识别精度方面的有效性。
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引用次数: 22
Unmixing multitemporal hyperspectral images with variability: An online algorithm 具有变异性的多时相高光谱图像解混:一种在线算法
Pierre-Antoine Thouvenin, N. Dobigeon, J. Tourneret
Hyperspectral unmixing consists in determining the reference spectral signatures composing a hyperspectral image and their relative abundance fractions in each pixel. In practice, the identified signatures may be affected by a significant spectral variability resulting for instance from the temporal evolution of the imaged scene. This phenomenon can be accounted for by using a perturbed linear mixing model. This paper studies an online estimation algorithm for the parameters of this extended linear mixing model. This algorithm is of interest for the practical applications where the size of the hyper-spectral images precludes the use of batch procedures. The performance of the proposed method is evaluated on synthetic data.
高光谱解混包括确定构成高光谱图像的参考光谱特征及其在每个像素中的相对丰度分数。在实践中,所识别的特征可能受到显著的光谱变异性的影响,例如,由成像场景的时间演变产生的光谱变异性。这种现象可以用扰动线性混合模型来解释。本文研究了该扩展线性混合模型参数的在线估计算法。该算法对实际应用的兴趣,其中高光谱图像的大小排除了批处理程序的使用。在综合数据上对该方法的性能进行了评价。
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引用次数: 4
Multimodal human action recognition in assistive human-robot interaction 辅助人机交互中的多模态人机动作识别
I. Rodomagoulakis, N. Kardaris, Vassilis Pitsikalis, E. Mavroudi, Athanasios Katsamanis, A. Tsiami, P. Maragos
Within the context of assistive robotics we develop an intelligent interface that provides multimodal sensory processing capabilities for human action recognition. Human action is considered in multimodal terms, containing inputs such as audio from microphone arrays, and visual inputs from high definition and depth cameras. Exploring state-of-the-art approaches from automatic speech recognition, and visual action recognition, we multimodally recognize actions and commands. By fusing the unimodal information streams, we obtain the optimum multimodal hypothesis which is to be further exploited by the active mobility assistance robot in the framework of the MOBOT EU research project. Evidence from recognition experiments shows that by integrating multiple sensors and modalities, we increase multimodal recognition performance in the newly acquired challenging dataset involving elderly people while interacting with the assistive robot.
在辅助机器人的背景下,我们开发了一个智能接口,为人类动作识别提供多模态的感觉处理能力。人类行为以多模态的方式考虑,包括来自麦克风阵列的音频输入,以及来自高清和深度相机的视觉输入。从自动语音识别到视觉动作识别,我们探索了最先进的方法,多模态地识别动作和命令。通过融合单模态信息流,得到了最优的多模态假设,该假设将在MOBOT欧盟研究项目框架下被主动移动辅助机器人进一步利用。识别实验的证据表明,通过集成多个传感器和模态,我们在与辅助机器人交互时提高了新获得的涉及老年人的挑战性数据集的多模态识别性能。
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引用次数: 59
Extensions of semidefinite programming methods for atomic decomposition 原子分解的半定规划方法的扩展
Hsiao-Han Chao, L. Vandenberghe
We present an extension of recent semidefinite programming formulations for atomic decomposition over continuous dictionaries, with applications to continuous or `gridless' compressed sensing. The dictionary considered in this paper is defined in terms of a general matrix pencil and is parameterized by a complex variable that varies over a segment of a line or circle in the complex plane. The main result of the paper is the formulation as a convex semidefinite optimization problem, and a simple constructive proof of the equivalence. The techniques are illustrated with a direction of arrival estimation problem, and an example of low-rank structured matrix decomposition.
我们提出了在连续字典上原子分解的最新半定规划公式的扩展,并将其应用于连续或“无网格”压缩感知。本文所考虑的字典是用一般的矩阵铅笔来定义的,并由复平面上在直线或圆的一段上变化的复变量来参数化。本文的主要成果是将其表述为一个凸半定优化问题,并给出了等价性的简单构造证明。通过一个方向估计问题和一个低秩结构化矩阵分解的例子说明了该技术。
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引用次数: 12
Fast and easy crowdsourced perceptual audio evaluation 快速和简单的众包感知音频评估
M. Cartwright, Bryan Pardo, G. Mysore, M. Hoffman
Automated objective methods of audio evaluation are fast, cheap, and require little effort by the investigator. However, objective evaluation methods do not exist for the output of all audio processing algorithms, often have output that correlates poorly with human quality assessments, and require ground truth data in their calculation. Subjective human ratings of audio quality are the gold standard for many tasks, but are expensive, slow, and require a great deal of effort to recruit subjects and run listening tests. Moving listening tests from the lab to the micro-task labor market of Amazon Mechanical Turk speeds data collection and reduces investigator effort. However, it also reduces the amount of control investigators have over the testing environment, adding new variability and potential biases to the data. In this work, we compare multiple stimulus listening tests performed in a lab environment to multiple stimulus listening tests performed in web environment on a population drawn from Mechanical Turk.
自动客观的音频评估方法快速,便宜,并且需要调查者很少的努力。然而,对于所有音频处理算法的输出,并不存在客观的评估方法,通常其输出与人类质量评估相关性较差,并且在其计算中需要地面真实数据。人类对音频质量的主观评级是许多任务的黄金标准,但成本高、速度慢,并且需要花费大量精力来招募受试者并进行听力测试。将听力测试从实验室转移到亚马逊土耳其机器人(Amazon Mechanical Turk)的微任务劳动力市场,加快了数据收集的速度,减少了调查人员的工作量。然而,它也减少了研究者对测试环境的控制,给数据增加了新的可变性和潜在的偏差。在这项工作中,我们比较了在实验室环境中进行的多次刺激听力测试和在网络环境中对来自土耳其机械的人群进行的多次刺激听力测试。
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引用次数: 65
Robust artificial-noise aided transmit design for multi-user MISO systems with integrated services 综合服务多用户MISO系统的鲁棒人工噪声辅助传输设计
Weidong Mei, Zhi Chen, Lingxiang Li, Jun Fang, Shaoqian Li
This paper considers an optimal artificial noise (AN)-aided transmit design for multi-user MISO systems in the eyes of service integration. Specifically, two sorts of services are combined and served simultaneously: one multicast message intended for all receivers and one confidential message intended for only one receiver. The confidential message is kept perfectly secure from all the unauthorized receivers. This paper considers a general case of imperfect channel state information (CSI), aiming at a joint and robust design of the input covariances for the multicast message, confidential message and AN, such that the worst-case secrecy rate region is maximized subject to the sum power constraint. To this end, we reveal its hidden convexity and transform the original worst-case robust secrecy rate maximization (SRM) problem into a sequence of semidefinite programming. Numerical results are presented to show the efficacy of our proposed method.
从业务集成的角度考虑了多用户MISO系统的最佳人工噪声辅助传输设计。具体来说,两种类型的服务被组合并同时提供:一个面向所有接收者的多播消息和一个仅面向一个接收者的机密消息。机密信息是绝对安全的,不会被未经授权的人接收。本文考虑不完全信道状态信息(CSI)的一般情况,旨在联合鲁棒设计组播消息、保密消息和AN的输入协方差,使最坏保密率区域在和功率约束下最大化。为此,我们揭示了其隐藏的凸性,并将原来的最坏情况鲁棒保密率最大化问题转化为一个半定规划序列。数值结果表明了该方法的有效性。
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引用次数: 15
Deterministic maximum likelihood method for direction-of-arrival estimation of strictly noncircular signals 严格非圆信号到达方向估计的确定性极大似然法
Yunmei Shi, X. Mao, Mingyang Cao, Yongtan Liu
In this paper, a noncircular deterministic maximum likelihood (NC-DML) estimator for direction-of-arrival estimation of strictly NC signals is devised. Unlike the conventional DML solution for arbitrary signals, the NC-DML exploits the NC properties of the sources by reconstructing the parameter set, significantly decreasing the number of parameters to be considered. For computing the NC-DML, we present a novel NC alternating projection (NC-AP) approach. The NC-AP solution is carried out based on an augmented virtual array structure. Moreover, it also takes the impact of the initial phase shift of the NC signals into account. Simulation results are included to illustrate the superiority of the proposed method.
本文设计了一种用于严格NC信号到达方向估计的非圆确定性极大似然估计器。与传统的任意信号的DML解决方案不同,NC-DML通过重建参数集来利用源的NC特性,大大减少了需要考虑的参数数量。为了计算NC- dml,我们提出了一种新的NC交替投影(NC- ap)方法。NC-AP解决方案是基于增强虚拟阵列结构实现的。此外,它还考虑了NC信号初始相移的影响。仿真结果说明了该方法的优越性。
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引用次数: 2
Predicting humor response in dialogues from TV sitcoms 预测电视情景喜剧对话中的幽默反应
D. Bertero, Pascale Fung
We propose a method to predict humor response in dialog using acoustic and language features. We use data from two popular TV sitcoms - "The Big Bang Theory" and "Seinfeld" - to predict how the audience responds to humor. Due to the sequentiality of humor response in dialogues we use a Conditional Random Field as classifier/predictor. Our method is relatively effective, with a maximum precision obtained of 72.1% in "Big Bang" and 60.2% in "Seinfeld". Experiments show that audio, speed, word and sentence length features are the most effective. This work is applicable to develop appropriate machine response empathetic to emotion in dialog, in addition to humor.
我们提出了一种利用声学和语言特征来预测对话中的幽默反应的方法。我们使用两部流行情景喜剧《生活大爆炸》和《宋飞正传》的数据来预测观众对幽默的反应。由于幽默反应在对话中的顺序性,我们使用条件随机场作为分类器/预测器。我们的方法是比较有效的,在《生活大爆炸》和《宋飞正传》中获得的最大精度分别为72.1%和60.2%。实验表明,音频、速度、单词和句子长度特征是最有效的。这项工作适用于开发适当的机器反应感同身受的情感对话,除了幽默。
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引用次数: 20
What to do about noisy consensus? 如何应对嘈杂的共识?
V. Solo, M. J. Piggott
There is an achilles heel underlying the consensus literature. It has been known for some time that measurement noise causes the explosive growth of the consensus mode. Here we state the noise problem; characterise the behaviour of the noisy consensus system including its drift to ∞ critique the existing remedies and develop a new remedy.
共识文献背后有一个致命弱点。一段时间以来,人们已经知道测量噪声会导致共识模式的爆炸性增长。我们在这里陈述噪音问题;描述嘈杂共识系统的行为特征,包括其向∞的漂移,批评现有的补救措施并开发新的补救措施。
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引用次数: 2
Blind CFO estimation for multiuser OFDM uplink with large number of receive antennas 带有大量接收天线的OFDM多用户上行链路盲CFO估计
Weile Zhang, F. Gao, Bobin Yao
In this paper, we propose a new blind carrier frequency offset (CFO) estimation method for multiuser orthogonal frequency division multiplexing (OFDM) uplink transmissions. The spatial multiplexing is supported in the considered model that allows the subcarriers to be simultaneously occupied by multiple users. We propose to assign different null subcarriers to different users and design algorithm that can perform blind CFO estimation for each individual user with the aid of large number of receive antennas, which then removes the necessity of multidimensional searching. Numerical results are provided to corroborate the proposed studies.
针对多用户正交频分复用(OFDM)上行传输,提出了一种新的盲载波频偏估计方法。所考虑的模型支持空间复用,允许多个用户同时占用子载波。我们提出为不同的用户分配不同的空子载波,并设计一种算法,利用大量的接收天线对每个用户进行盲CFO估计,从而消除了多维搜索的必要性。数值结果证实了所提出的研究。
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引用次数: 7
期刊
2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
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