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Joint bottleneck feature and attention model for speech recognition 语音识别的联合瓶颈特征与注意模型
Long Xingyan, Qu Dan
Recently, attention based sequence-to-sequence model become a research hotspot in speech recognition. The attention model has the problem of slow convergence and poor robustness. In this paper, a model that jointed a bottleneck feature extraction network and attention model is proposed. The model is composed of a Deep Belief Network as bottleneck feature extraction network and an attention-based encoder-decoder model. DBN can store the priori information from Hidden Markov Model so that increasing convergence speed of and enhancing both robustness and discrimination of features. Attention model utilizes the temporal information of feature sequence to calculate the posterior probability of phoneme. Then the number of stack recurrent neural network layers in attention model is reduced in order to decrease the calculation of gradient. Experiments in the TIMIT corpus showed that the phoneme error rate is 17.80% in test set, the average training iteration decreased 52%, and the number of training iterations decreased from 139 to 89. The word error rate of WSJ eval92 is 12.9% without any external language model.
近年来,基于注意力的序列到序列模型成为语音识别领域的研究热点。注意模型存在收敛速度慢、鲁棒性差的问题。本文提出了一个瓶颈特征提取网络与注意力模型相结合的模型。该模型由深度信念网络作为瓶颈特征提取网络和基于注意力的编码器-解码器模型组成。DBN存储了隐马尔可夫模型的先验信息,提高了算法的收敛速度,增强了特征的鲁棒性和识别能力。注意模型利用特征序列的时间信息来计算音素的后验概率。然后减少了注意模型中堆栈递归神经网络的层数,以减少梯度的计算。在TIMIT语料库上的实验表明,测试集的音素错误率为17.80%,平均训练迭代次数减少52%,训练迭代次数从139次减少到89次。在没有任何外部语言模型的情况下,WSJ eval92的单词错误率为12.9%。
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引用次数: 5
Interchange of criminal rules between CLRL and LKIF cll与LKIF之间的刑事规则互换
Xing Wang, Yixing Sun, Xiaoliang Tang, Ji Chen, Jiuxiang Jin
There is much fuzzy and non-monotonic knowledge in the Semantic Web Criminal Law Area. In recent years, the problem of fuzzy rules interchange has become one of the most important problems in the Semantic Web. Aiming at the problem of heterogeneous fuzzy rule interchange in the Semantic Web, which is based on the proposed Semantic Web Criminal Law Rule Language (CLRL), and based on the rules and norms of XML. We construct the rule mapping between the CLRL and Legal Knowledge Interchange Format (LKIF), and propose a heterogeneous fuzzy criminal law rules interchange architecture (CRIAXS), which supports the bidirectional rule interchange between legal rules. We also analyze the problem of information loss caused by the different language expression ability in the process of legal knowledge interchange, and put forward to the solution. Based on the above description, the prototype system CRIAXS which is based on the JavaScript language has been achieved on the HBuilder platform. We also verify the correctness and stability of the system through multiple conversion examples. The results show that the architecture and the implemented system which laysa solid foundation for the rule-based reasoning, has a good solution to the communication problem between heterogeneous systems, and it has a wide range of application prospects.
语义网刑法领域存在着许多模糊的、非单调的知识。近年来,模糊规则的交换问题已成为语义Web中的重要问题之一。针对语义网中异构模糊规则交换的问题,提出了基于XML规则规范的语义网刑法规则语言(CLRL)。构建了CLRL与法律知识交换格式(LKIF)之间的规则映射,提出了一种异构模糊刑法规则交换体系结构(CRIAXS),支持法律规则之间的双向规则交换。分析了法律知识交流过程中由于语言表达能力不同而造成的信息丢失问题,并提出了解决方法。基于以上描述,在HBuilder平台上实现了基于JavaScript语言的原型系统CRIAXS。并通过多个转换实例验证了系统的正确性和稳定性。结果表明,该体系结构和实现的系统为基于规则的推理奠定了坚实的基础,很好地解决了异构系统之间的通信问题,具有广泛的应用前景。
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引用次数: 0
Background subtraction via online box constrained RPCA 基于在线框约束RPCA的背景减法
Hang Li, Zhuang Miao, Yang Li, Jiabao Wang, Yafei Zhang
To address the issue of background subtraction include shadow challenge, an online robust principal component analysis (RPCA) method with box constraint (BC-RPCA) has been proposed to detect moving object and accelerate the RPCA like method. First of all, the BC-RPCA method considers the input image sequences as low rank background, sparse foreground and moving shadow. Then the Augmented Lagrangian method is used to convert the box constraint into the objective function and rank-1 modification for thin SVD is also employed to accelerate the solver via alternating direction method of multipliers (ADMM). Finally, the experiments demonstrated the proposed method works effectively and has low computational complexity during real-time application.
为了解决背景减去包括阴影挑战的问题,提出了一种基于框约束的在线鲁棒主成分分析方法(BC-RPCA)来检测运动目标,加快了类RPCA方法的速度。首先,BC-RPCA方法将输入图像序列考虑为低秩背景、稀疏前景和移动阴影。然后利用增广拉格朗日方法将箱形约束转化为目标函数,并利用乘法器交替方向法(ADMM)对SVD进行秩1修正加速求解。实验结果表明,该方法在实时应用中具有较低的计算复杂度。
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引用次数: 3
A user-satisfaction-based clustering method 基于用户满意度的聚类方法
Wenjun Quan, Qing Zhou, Hai Nan, Yanbin Chen, Ping Wang
Clustering is a common method for data analysis where a good clustering helps users to better understand the data. As for clustering quality measurement, the mainly used are some objective measures, while some researchers also paid attention to users' goals and they proposed methods to get users involved in clustering. However, a good clustering must meet the satisfaction of the users. Apart from these objective measures and users' goals, whether the clustering is easy to understand is also important for clustering quality measurement, especially in high-dimensional data clustering, if the data points in the final clusters are with high dimensions, it will hinder users' understanding of the clustering results. With all these concerns considered, we proposed an index of users' satisfaction with high-dimensional data clustering. According to this index, we further put forward a user-satisfaction-based clustering method to better serve users' satisfaction. We first developed an optimization model about users' satisfaction, then we used genetic algorithm to solve this model and obtained some high-quality clusterings, after reclustering of the clusterings obtained in previous steps, a few representative high-quality clusterings are provided for users to select. The experiment results suggest that our method is effective to provide some representative clusterings with the clustering quality, users' goals and the interpretability of clustering results being well considered.
聚类是一种常用的数据分析方法,好的聚类可以帮助用户更好地理解数据。在聚类质量度量方面,主要采用一些客观度量,但也有一些研究者关注用户的目标,提出了让用户参与聚类的方法。然而,一个好的聚类必须满足用户的满意度。除了这些客观度量和用户的目标之外,聚类是否易于理解对于聚类质量度量也很重要,特别是在高维数据聚类中,如果最终聚类中的数据点具有高维,则会阻碍用户对聚类结果的理解。考虑到所有这些问题,我们提出了一个用户对高维数据聚类的满意度指标。根据该指标,我们进一步提出了基于用户满意度的聚类方法,以更好地服务于用户满意度。我们首先建立了用户满意度的优化模型,然后利用遗传算法对该模型进行求解,得到了一些高质量的聚类,对前几步得到的聚类进行重新聚类后,提供了几个具有代表性的高质量聚类供用户选择。实验结果表明,该方法在充分考虑聚类质量、用户目标和聚类结果可解释性的情况下,能够有效地提供具有代表性的聚类。
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引用次数: 2
The Merrifield-Simmons index of two classes of lexicographic product graphs of corona graphs 日冕图的两类词典积图的Merrifield-Simmons索引
Min Guo, Wen-wen Tian, N. Li
The Merrifield-Simmons index of a graph is defined as the total number of the independent sets of the graph. This paper mainly discussed the Merrifield- Simmons index of two classes of lexicographic product graphs of Corona graphs P(m)n [H] and C(m)n[H], with the specific expressions are given.
图的Merrifield-Simmons指数定义为图的独立集的总数。本文主要讨论了Corona图P(m)n [H]和C(m)n[H]的两类词典积图的Merrifield- Simmons索引,并给出了具体表达式。
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引用次数: 0
Extreme learning machine for regression based on condition number and variance decomposition ratio 基于条件数和方差分解比的极值学习机回归
Meiyi Li, Weibiao Cai, Qingshuai Sun
The extreme learning machine (ELM) is a novel single hidden layer feedforward neural network. Compared with traditional neural network algorithm, ELM has the advantages of fast learning speed and good generalization performance. However, there are still some shortages that restrict the further development of ELM, such as the perturbation and multicollinearity in the linear model. To the adverse effects caused by the perturbation and the multicollinearity, this paper proposes ELM based on condition number and variance decomposition ratio (CVELM) for regression, which separates the interference terms in the model by condition number and variance decomposition ratio, and then manipulate the interference items with weighted. Finally, the output layer weight is calculated by the least square method. The proposed algorithm can not only get good stability of the algorithm, but also reduce the impact on the non-interference items when dealing with the interference terms. The regression experiments on several datasets show that the proposed method owns a good generalization performance and stability.
极限学习机是一种新型的单隐层前馈神经网络。与传统神经网络算法相比,ELM具有学习速度快、泛化性能好等优点。然而,线性模型中存在的扰动和多重共线性等问题制约了ELM的进一步发展。针对扰动和多重共线性带来的不利影响,本文提出了基于条件数和方差分解比的ELM (CVELM)回归方法,该方法通过条件数和方差分解比分离模型中的干扰项,然后对干扰项进行加权处理。最后,采用最小二乘法计算输出层权值。该算法在处理干扰项时,不仅具有良好的稳定性,而且减少了对非干扰项的影响。在多个数据集上的回归实验表明,该方法具有良好的泛化性能和稳定性。
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引用次数: 2
Bayesian analysis for multivariate skew-normal reproductive dispersion random effects models 多元偏正态生殖分散随机效应模型的贝叶斯分析
Yuanying Zhao, Xingde Duan, De-Wang Li
Normality assumption of the random errors and the random effects is a routinely used technique in data analysis. However, this assumption might be unreasonable in many practical cases. In this paper the limitation is relaxed by assuming that the random error follows a reproductive dispersion model and the random effect is distributed as a skew-normal distribution, which is termed as a multivariate skew-normal reproductive dispersion random effects model. We propose a Bayesian procedure to simultaneously estimate the random effects and the unknown parameters on the basis of the Gibbs sampler and Metropolis-Hastings algorithm. In the end, the Framingham cholesterol data example is employed to demonstrate the preceding proposed Bayesian methodologies.
随机误差和随机效应的正态假设是数据分析中常用的一种方法。然而,这种假设在许多实际情况下可能是不合理的。本文假定随机误差服从繁殖分散模型,随机效应呈偏正态分布,从而放宽了这种限制,称为多元偏正态繁殖分散随机效应模型。在Gibbs采样器和Metropolis-Hastings算法的基础上,提出了一种同时估计随机效应和未知参数的贝叶斯方法。最后,以Framingham胆固醇数据为例,论证了上述贝叶斯方法。
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引用次数: 0
Deep learning based classification for paddy pests & diseases recognition 基于深度学习的水稻病虫害分类识别
Ahmad Arib Alfarisy, Quan Chen, M. Guo
Pests and diseases are a threat to paddy production, especially in Indonesia, but identification remains to be a challenge in massive scale and automatically. Increasing smartphone usage and deep learning advance create an opportunity to answer this problem. Collecting 4,511 images from four language using search engines, and augment it to develop diverse data set. This dataset fed into CaffeNet model and processed with Caffe framework. Experiment result in the model achieved accuracy 87%, which is higher than random selection 7.6%.
病虫害对水稻生产构成威胁,特别是在印度尼西亚,但大规模和自动识别病虫害仍然是一项挑战。智能手机使用量的增加和深度学习的进步为解决这个问题创造了机会。使用搜索引擎从四种语言中收集4,511张图像,并对其进行扩充,形成多样化的数据集。将该数据集输入到CaffeNet模型中,并使用Caffe框架进行处理。实验结果表明,该模型的准确率为87%,比随机选择的准确率高7.6%。
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引用次数: 54
Credit risk assessment of high-tech enterprises based on RSNCL-ANN ensemble model 基于RSNCL-ANN集成模型的高新技术企业信用风险评估
Maoguang Wang, Jiayu Yu, Zijian Ji
Now, Chinese economic development strategy is focusing on the restructuring of industrial structure, and the high-tech enterprises are facing great opportunities. However, due to the development and evaluation risks, investors are hard to assess their risks accurately. This paper proposed RSNCL-ANN ensemble strategies to build a risk assessment model and establishes indicators that cover corporate debt service, profitability, management, ownership structure and other aspects. These indicators are used to build a comprehensive and complete index system. In the RSNCL-ANN model, the neural network model was used as the base learner, and the strategies of random subspace and negative correlation learning were used to increase the diversity of the base learner so as to enhance the generalization ability of the integrated model. The experiment proved that this model had better predictive ability for venture firms.
当前,中国经济发展战略的重点是产业结构调整,高新技术企业面临着巨大的发展机遇。然而,由于开发和评估风险,投资者很难准确评估其风险。本文提出RSNCL-ANN集成策略,构建风险评估模型,建立涵盖企业偿债、盈利能力、管理、股权结构等方面的指标。利用这些指标构建一个全面完整的指标体系。在RSNCL-ANN模型中,采用神经网络模型作为基础学习器,并采用随机子空间和负相关学习策略增加基础学习器的多样性,从而增强集成模型的泛化能力。实验证明,该模型对风险企业具有较好的预测能力。
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引用次数: 1
Prescription fraud detection through statistic modeling 基于统计建模的处方欺诈检测
Hongxiang Zhang, Lizhen Wang
The emergence of prescription fraud will reduce the effectiveness of health insurance investment. This paper will propose a new model to identify potentially fraudulent prescriptions and apply it to real prescription data to test its performance. Because of the low efficiency and high cost of prescription fraud through artificial experts, and because of the limitations of human knowledge, artificial detection is slow and insensitive to new fraud. We used the statistical characteristics of prescription data and other features related to the prescription to measure the risk level of the prescription, and found a prescription with high risk. The potential of this model can be used not only for off-line and online analysis and prediction of prescription fraud, but also for automatic updating of new fraud prescriptions. We test the model on real prescription data sets and compared to other approaches. The experimental results show that our model is promising for discovering the prescription fraud from the real health care data sets.
处方造假的出现将降低医保投资的有效性。本文将提出一个新的模型来识别潜在的欺诈处方,并将其应用于真实的处方数据来测试其性能。由于通过人工专家进行处方造假的效率低、成本高,而且由于人类知识的局限性,人工检测速度慢,对新的造假行为不敏感。我们利用处方数据的统计特征和其他与处方相关的特征来衡量处方的风险水平,发现了一个高风险的处方。该模型的潜力不仅可以用于处方欺诈的离线和在线分析和预测,还可以用于自动更新新的欺诈处方。我们在真实处方数据集上测试了模型,并与其他方法进行了比较。实验结果表明,我们的模型可以从真实的医疗数据集中发现处方欺诈。
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引用次数: 3
期刊
Proceedings of 2018 International Conference on Mathematics and Artificial Intelligence
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