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2015 2nd International Conference on Advanced Informatics: Concepts, Theory and Applications (ICAICTA)最新文献

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Acoustic and language models adaptation for Indonesian spontaneous speech recognition 印尼语自发语音识别的声学和语言模型适应
D. Lestari, Angela Irfani
Performance of Indonesian Automatic Speech Recognition is decreased significantly when recognizing spontaneous speech. Spontaneous speech has particular characteristics differ from read speech both in acoustic and language rule. In spontaneous speech, the pronunciation and expression of the speech varies depending on the speaker fluency and the topic. Disfluencies in speech disrupt a fluent sentence and more often violates the rule of the formal language. To improve Indonesian automatic speech recognizer to recognize spontaneous speech, several model enhancement methods was conducted by adding spontaneous data and retrain both acoustic model and language model using those data, by adapting the acoustic model based on the maximum likelihood linear regression and maximum a posteriori approach, and by adapting the language model employing the language model linear interpolation. Experimental results show all methods are effective in increasing the capability of the Indonesian automatic speech recognizer to recognize spontaneous data. However, all methods decreased the accuracy of read speech recognition. On average, retraining both acoustic and language models using combination of read and spontaneous data is more effective than conducting model adaptation. The absolute improvement of 28.34% accuracy is achieved after retraining both language model and acoustic model using combination of read data and spontaneous data.
印尼语自动语音识别在识别自发语音时,性能明显下降。自发语在语音和语言规则上都具有与朗读语不同的特点。在自发演讲中,演讲的发音和表达会根据说话者的流利程度和话题而有所不同。言语的不流畅会破坏一个流畅的句子,而且更经常违反形式语言的规则。为了提高印尼语自动语音识别器对自发语音的识别能力,采用了几种模型增强方法,包括添加自发数据并利用这些数据对声学模型和语言模型进行再训练、基于最大似然线性回归和最大后验方法对声学模型进行自适应、使用语言模型线性插值对语言模型进行自适应。实验结果表明,所有方法都能有效地提高印尼语自动语音识别器对自发数据的识别能力。然而,所有的方法都降低了读语音识别的准确性。平均而言,结合阅读和自发数据对声学和语言模型进行再训练比进行模型适应更有效。结合读取数据和自发数据对语言模型和声学模型进行再训练,准确率绝对提高28.34%。
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引用次数: 11
Interactive fluid simulation based on material point method for mobile devices 基于物质点法的移动设备交互流体仿真
Dody Dharma, Afwarman Manaf
In this paper, we explain about the implementation of interactive fluid simulation based on Navier-Stokes equations for mobile devices. We use Material Point Method (Euler-Lagrange) approach for fluid discretization. This implementation is optimized to reach 60 cycles/second of simulation. The dynamic computing optimization is done by using several techniques, such as: grid size reduction, quadratic B-spline interpolation, and localized active node computation. The gravitational direction is determined by data stream from accelerometer sensor. The external forces of fluid are generated from touch screen sensor and its coordinate. We also propose a strategy for fluid visualization in Graphic Processing Unit (GPU) in order to reach rendering performance at 60 frame-per-second (fps) by using motion blur technique. From this research, we obtain 2000 particles that can be simulated interactively at 60 fps.
在本文中,我们解释了基于Navier-Stokes方程的移动设备交互式流体模拟的实现。采用物质点法(欧拉-拉格朗日)进行流体离散化。该实现经过优化,达到60个周期/秒的模拟。采用网格尺寸缩减、二次b样条插值和局部活动节点计算等技术进行动态计算优化。重力方向由加速度计传感器的数据流确定。流体的外力是由触摸屏传感器及其坐标产生的。为了达到60帧/秒(fps)的渲染性能,我们还提出了一种图形处理单元(GPU)的流体可视化策略。从这项研究中,我们获得了2000个可以以60fps的速度进行交互模拟的粒子。
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引用次数: 2
Event extraction on Indonesian news article using multiclass categorization 基于多类分类的印尼语新闻文章事件提取
M. L. Khodra
Event extraction identifies who did what, when, where, why, and how, which is known as 5W1H. We aim to investigate event extraction on Indonesian news articles as multiclass-categorization problem, and apply statistical learning-based approach that treats event extraction as a sequence labeling problem under BIO (Begin Inside Outside) labeling scheme. Each token of input text will be classified into one of 13 predefined classes. Our contributions are providing 5W1H corpus, and the best technique to build model of event extraction. Our experiments show that C4.5 is better than AdaboostM1 although Adaboost can identify minority labels better than C4.5. In addition, C4.5 with all features gave the best Fmeasure of 0.666.
事件提取识别谁做了什么、何时、何地、为什么以及如何做,这被称为5W1H。我们的目标是研究印度尼西亚新闻文章的事件提取作为多类别分类问题,并应用基于统计学习的方法,将事件提取作为BIO (Begin Inside Outside)标记方案下的序列标记问题。输入文本的每个标记将被分类到13个预定义类中的一个。我们的贡献是提供5W1H语料库,以及构建事件抽取模型的最佳技术。我们的实验表明,尽管Adaboost可以比C4.5更好地识别少数标签,但C4.5优于AdaboostM1。此外,C4.5的所有特征给出了最好的Fmeasure为0.666。
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引用次数: 8
Energy efficient routing in cluster based wireless sensor networks 基于集群的无线传感器网络节能路由
Sounak Paul, Tapan Dey
Wireless Sensor Network (WSN) is severely energy constrained. Selecting an energy efficient routing is very important for such network. In this paper, we present an approach for routing in wireless sensor network to minimize the energy consumption to increase active lifetime of the network. Our approach takes the minimum energy route for transmitting data from a node to a fixed base station through a cluster head. We calculate the distance between neighboring clusters using Hausdorff distance. We evaluate energy consumed to transmit a `k' bit message to all the neighbors from source cluster. Comparing the entire route we select the minimum energy route to transmit the data to the base station. Simulation result shows that our scheme achieves significant improvement in terms of energy efficiency when compared with some of the established routing protocols in the same category.
无线传感器网络(WSN)存在严重的能量限制。对于这样的网络,选择一种节能的路由是非常重要的。在本文中,我们提出了一种无线传感器网络的路由方法,以减少网络的能量消耗,增加网络的有效寿命。我们的方法采用最小能量路径,通过簇头将数据从节点传输到固定基站。我们使用Hausdorff距离计算相邻簇之间的距离。我们计算了从源簇向所有邻居发送k位消息所消耗的能量。比较整个路由,选择能量最小的路由将数据传输到基站。仿真结果表明,与已有的同类路由协议相比,该方案在能效方面有了显著提高。
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引用次数: 2
Combining temporal and content aware features for microblog retrieval 结合时间和内容感知特征的微博检索
Abu Nowshed Chy, Md Zia Ullah, Masaki Aono
Microblog, especially Twitter, have become an integral part of our daily life for searching latest news and events information. Due to short length characteristics of tweets, only content-relevance based search result cannot satisfy user's information need. Recent research shows that considering temporal aspects in this regard improve the retrieval performance significantly. In this paper, we propose a method to re-rank the search result based on temporal features, account related features, and Twitter specific features along with textual features of tweets. We also applied a two stage query expansion technique to improve the relevancy of tweets. After automatic feature selection by using LASSO and elastic-net regularization; we applied random forest as a feature ranking method to estimate the importance of selected feature. Then, with that importance score, a weighted ranking model combines the features value to estimate the relevance score. We conducted our experiments based on the TREC Microblog 2011 and 2012 queries over the TREC Tweets2011 collection. Experimental result demonstrates the effectiveness of our method over the baseline in terms of precision@30 (P@30), mean average precision (MAP), and reciprocal-precision (R-Prec) metrics.
微博,尤其是推特,已经成为我们日常生活中不可或缺的一部分,用于搜索最新的新闻和事件信息。由于tweets的短长度特点,仅基于内容相关性的搜索结果不能满足用户的信息需求。最近的研究表明,在这方面考虑时间方面可以显著提高检索性能。在本文中,我们提出了一种基于tweet的时间特征、账户相关特征和Twitter特定特征以及文本特征对搜索结果进行重新排序的方法。我们还应用了两阶段查询扩展技术来提高tweet的相关性。经过LASSO和弹性网正则化的自动特征选择;我们采用随机森林作为特征排序方法来估计所选特征的重要性。然后,根据重要性得分,加权排序模型结合特征值来估计相关性得分。我们基于TREC微博2011和2012查询对TREC Tweets2011集合进行了实验。实验结果证明了我们的方法在precision@30 (P@30)、平均精度(MAP)和往复式精度(R-Prec)指标方面优于基线的有效性。
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引用次数: 1
The bilateral denoising performance influence of window, spatial and radiometric variance 窗、空间和辐射方差对双边去噪性能的影响
V. Patanavijit
In the research operation of Digital Signal Processing (DSP) and Digital Image Processing (DIP), one of the most essential obstacles is the image denoise algorithm by the reason of a very large demand of high quality noise-free images therefore there are many image denoise algorithms have been invented in the time of two decades. Bilateral filter is one of the most impressive and feasible algorithms, which is usually applied for denoise propose, but the performance of the Bilateral filter is substantially bank on three parameters: spatial variance, radiometric variance and window size. Consequently, this paper investigates the performance influence impact of spatial variance, radiometric variance, window size for the Bilateral Filter in the denoise propose. In the denoise experiment, Bilateral filter (BF) is applied on three noisy standard images under five Gaussian noise power levels and the best results in the PSNR prospective point of view from deniose algorithm is picked. Moreover, an optimal value of three parameters: spatial variance, radiometric variance, window size, which make the performance of Bilateral filter the highest PSNR, are extensively investigated for each types of tested images and each noise powers.
在数字信号处理(DSP)和数字图像处理(DIP)的研究过程中,由于对高质量无噪声图像的需求非常大,图像去噪算法是其中最本质的障碍之一,因此在近二十年的时间里发明了许多图像去噪算法。双边滤波器是一种最令人印象深刻和可行的算法,通常用于去噪建议,但双边滤波器的性能主要取决于三个参数:空间方差、辐射方差和窗口大小。因此,本文研究了空间方差、辐射方差、窗口大小对双边滤波器降噪方案性能的影响。在降噪实验中,在5种高斯噪声功率下,对3幅带有噪声的标准图像进行双边滤波(BF),从降噪算法的PSNR角度挑选出最佳结果。此外,本文还研究了空间方差、辐射方差和窗口大小这三个参数的最优值,从而使双边滤波器在不同类型的测试图像和噪声功率下的PSNR达到最高。
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引用次数: 18
Integration of Diesel Engine monitoring system and recommendation system 柴油机监控系统与推荐系统的集成
N. Maulidevi, M. Al-Hasan, M. L. Khodra
Diesel Engine is still required in Indonesia, since diesel engine is the most appropriate engine to produce electricity in isolated area. Indonesia comprises of a large number of isolated area, and at the moment it is not the priority of the government to install cable connecting those isolated areas. The diesel engines can be used in the next 15-20 years, if the maintenance is properly conducted. The maintenance requires the online monitoring and appropriate recommendation based on the result of monitoring process. This paper discusses the integration of online monitoring system, which is discussed in the previous paper, and the proposed recommendation system. The online monitoring system is implemented as web based system, the recommendation is utilizing CLIPS as the back-end processes, and the integration is implemented in Java as web based application.
印度尼西亚仍然需要柴油发动机,因为柴油发动机是最适合在偏远地区发电的发动机。印度尼西亚由大量孤立地区组成,目前安装连接这些孤立地区的电缆并不是政府的首要任务。如果保养得当,柴油机可以使用15-20年。维护需要进行在线监控,并根据监控过程的结果提出适当的建议。本文讨论了前一篇文章讨论的在线监控系统与建议的推荐系统的集成。在线监控系统采用基于web的方式实现,建议采用CLIPS作为后端流程,集成采用Java作为基于web的应用程序实现。
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引用次数: 1
Lattice Boltzmann method for two-dimensional shallow water equations with CUDA 二维浅水方程的格子玻尔兹曼方法
Jittavat Suksumlarn, W. Suwannik, M. Maleewong
This paper presents the Lattice Boltzmann method (LBM) for two dimensional shallow water equations to simulate dam break problem. We implemented sequential code and compared it with the exact solution. Then, we implemented three parallel programs with the Compute Unified Device Architecture (CUDA). The first parallel version is a straightforward implementation. The second parallel version reduces the calculations of distribution function in the LBM. The third parallel program has fixed the branch divergence problem with branch distribution. Speed up for the third parallel program is increased approximately 2.1x from the first parallel program, and it is increased approximately 22.7x from the sequential program version.
本文提出了二维浅水方程的格子玻尔兹曼方法(LBM)来模拟溃坝问题。我们实现了顺序代码,并将其与精确解进行了比较。然后,我们用计算统一设备架构(CUDA)实现了三个并行程序。第一个并行版本是一个简单的实现。第二个并行版本减少了LBM中分布函数的计算。第三种并行程序解决了分支分布的分支发散问题。第三个并行程序的速度比第一个并行程序提高了约2.1倍,比顺序程序版本提高了约22.7倍。
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引用次数: 0
Effectiveness of social media text classification by utilizing the online news category 利用在线新闻类别对社交媒体文本进行分类的有效性
Phat Jotikabukkana, Virach Sornlertlamvanich, Okumura Manabu, C. Haruechaiyasak
Social media text can illustrate significant information of our real social situation. It can show the direction of real-time social movement. However, it has its own characteristics such as using short text and informal language, many unstructured information and argot. This kind of text is hard to classify and difficult to analyze to extract the useful information. In this paper, we propose an effective technique to classify the social media text by utilizing the initial keywords from well-formed sources of data, such as online news. Term frequency-inverse document frequency weighting technique (TF-IDF) and Word Article Matrix (WAM) are used as main methods in this research. We use the extracted keywords from the well-formed source as a main factor to do experiment on Twitter messages. We found a set of the social media keywords can represent the essence of social events and can be used to classify the text effectively.
社交媒体文本可以说明我们真实社会状况的重要信息。它可以显示实时社会运动的方向。然而,它有自己的特点,如使用短文本和非正式语言,大量的非结构化信息和暗语。这种文本很难分类,也很难分析,难以从中提取有用的信息。在本文中,我们提出了一种有效的技术,通过利用来自格式良好的数据源(如在线新闻)的初始关键字来对社交媒体文本进行分类。本文主要采用词频逆文档频率加权技术(TF-IDF)和词文章矩阵(WAM)作为研究方法。我们以从格式良好的信息源中提取的关键词为主要因素,对Twitter消息进行实验。我们发现一组社交媒体关键词可以代表社会事件的本质,并且可以用来对文本进行有效的分类。
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引用次数: 5
SAE: Syntactic-based aspect and opinion extraction from product reviews SAE:从产品评论中提取基于语法的方面和意见
W. Maharani, D. H. Widyantoro, M. L. Khodra
Aspect extraction is an important task in sentiment analysis to identify aspects in customer review products. Most existing works defines the pattern set manually or using heuristic approach. In this paper, we propose SAE, a Syntactical-based Aspect Extraction using decision tree and rule learning to generate the pattern set based on sequence labelling. We provide a comprehensive analysis of aspect extraction using pattern-based method and typed-dependency. The patterns will be used to identify and extract aspect term candidates in customer product review. First, we generate pattern set that identify aspect term candidates using decision tree and rule learning such as ID3, J48, Random Tree, Part and Prism, based on sequence labelling. The set of pattern is employed to produced aspect term candidates. We use a list of positive and negative opinion lexicon as aspect term candidates filtering. Finally, we combine the pattern-based method with typed dependency to remove irrelevant aspect term. The results showed that the combination of pattern-based and typed dependency can increase the performance. However, since our work is based on syntactic-based approach, it can be used to other domains, that is expected to include an unlimited domain datasets.
面向抽取是情感分析中的一项重要任务,用于识别顾客评价产品中的面向。大多数现有的工作都是手动或使用启发式方法定义模式集。在本文中,我们提出了一种基于句法的方面提取方法SAE,该方法使用决策树和规则学习来生成基于序列标记的模式集。我们使用基于模式的方法和类型依赖对方面提取进行了全面的分析。这些模式将用于识别和提取客户产品评审中的方面术语候选项。首先,我们基于序列标记,使用决策树和规则学习(如ID3、J48、Random tree、Part和Prism)生成识别方面术语候选的模式集。该模式集用于生成方面术语候选项。我们使用正面和负面意见词典列表作为方面词候选过滤。最后,我们将基于模式的方法与类型依赖相结合,以去除不相关的方面项。结果表明,基于模式和类型依赖相结合可以提高性能。然而,由于我们的工作是基于基于语法的方法,它可以用于其他领域,预计将包括无限的领域数据集。
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引用次数: 10
期刊
2015 2nd International Conference on Advanced Informatics: Concepts, Theory and Applications (ICAICTA)
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