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2011 IEEE International Conference on Granular computing, GrC 2011

作者： Zhang, Bo Shi, Zhongzhi Key Laboratory of Intelligent Information Processing Institute of Computing Technology CAS Beijing China School of Computer Science and Technology China University of Mining and Technology Xuzhou China

ISBN: (纸本)9781457703713

Cloud computing focuses on supporting high scalable and high available parallel and distributed computing, based on the infrastructure built on top of large scale clusters which contain a large number of cheap PC servers, to process the huge amounts of data generated by Internet. As the core of cloud computing, Google's MapReduce programming model and Google File System (GFS) provide such computing power. Granular computing (GrC) is an objective world outlook and methodology. From the point of GrC, this paper surveys the Google's MapReduce programming model, analyses how to express its process of data granulation and computing more accurately and more strictly during the parallel and distributed computing. © 2011 IEEE.

关键词： MapReduce

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A novel dependency-to-string model for statistical machine translation

A novel dependency-to-string model for statistical machine t...

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Conference on Empirical Methods in Natural Language Processing, EMNLP 2011

作者： Xie, Jun Mi, Haitao Liu, Qun Key Laboratory of Intelligent Information Processiong Institute of Computing Technology Chinese Academy of Sciences P.O. Box 2704 Beijing 100190 China

ISBN: (纸本)1937284115

Dependency structure, as a first step towards semantics, is believed to be helpful to improve translation quality. However, previous works on dependency structure based models typically resort to insertion operations to complete translations, which make it difficult to specify ordering information in translation rules. In our model of this paper, we handle this problem by directly specifying the ordering information in head-dependents rules which represent the source side as head-dependents relations and the target side as strings. The head-dependents rules require only substitution operation, thus our model requires no heuristics or separate ordering models of the previous works to control the word order of translations. Large-scale experiments show that our model performs well on long distance reordering, and outperforms the state-of-the-art constituency-to-string model (+1.47 BLEU on average) and hierarchical phrase-based model (+0.46 BLEU on average) on two Chinese-English NIST test sets without resort to phrases or parse forest. For the first time, a source dependency structure based model catches up with and surpasses the state-of-the-art translation models. © 2011 Association for Computational Linguistics.

关键词： Semantics

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Electromagnetic waves multi-path model based on image approach in tunnels

Electromagnetic waves multi-path model based on image approa...

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International Conference on Electric information and Control Engineering

作者： Yao, Shan-Hua Wu, Xian-Liang School of Electric and Information Engineering Anhui University of Science and Technology Huainan China Key Laboratory of Intelligent Computing and Signal Anhui University Hefei China

ISBN: (纸本)9781424480395

Multi-path propagation models of electromagnetic waves in tunnels are very important in resisting fading and enhancing communication quality. The differences between the wave-guide mode matching theory and ray tracing technology in predicting field were analyzed firstly in this paper, multi-path prediction model of the near-field environment in tunnels is established by using ray-tracing technique, and calculation means of total propagation distance and incidence angle and reflecting angle about three-dimensional helix ray based on image approach are presented. Finally propagation prediction model was simulated. The simulating results show that fading phenomena is very strong in tunnels, so propagation model is valuable of predicting field distributing. © 2011 IEEE.

关键词： Forecasting

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Adjoining tree-to-string translation

Adjoining tree-to-string translation

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49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies, ACL-HLT 2011

作者： Liu, Yang Liu, Qun Lü, Yajuan Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences P.O. Box 2704 Beijing 100190 China

ISBN: (纸本)9781932432879

We introduce synchronous tree adjoining grammars (TAG) into tree-to-string translation, which converts a source tree to a target string. Without reconstructing TAG derivations explicitly, our rule extraction algorithm directly learns tree-to-string rules from aligned Treebank-style trees. As tree-to-string translation casts decoding as a tree parsing problem rather than parsing, the decoder still runs fast when adjoining is included. Less than 2 times slower, the adjoining tree-tostring system improves translation quality by +0.7 BLEU over the baseline system only allowing for tree substitution on NIST Chinese- English test sets. © 2011 Association for Computational Linguistics.

关键词： Trees (mathematics)

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Local regression model for automatic face sketch generation

Local regression model for automatic face sketch generation

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International Conference on Image and Graphics

作者： Ji, Naye Chai, Xiujuan Shan, Shiguang Chen, Xilin Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences China Graduate University of Chinese Academy of Sciences Beijing China

ISBN: (纸本)9780769545417

As one of the important artistic styles of portrait, sketch portrait has wide applications for both digital entertainment and law enforcement. In this paper, an automatic face sketch generation approach is presented by learning from photo-sketch pair examples. Specifically, the relationship between a face photo and its corresponding face sketch is learned on image patch level. By applying this relationship to the input face photo patch, we can infer the output face sketch patch by exploiting some regression techniques such as kNN, the Lasso and so on. Via our local regression model, we can synthesize an appealing sketch portrait from a given face photo in a few minutes. Experiments conducted on CUHK database have shown that our results are more compelling than previous methods especially in two respects: (1) our synthesized sketches preserve more identity information of the original face photo;(2) our synthesized sketches presents more pencil sketch texture. © 2011 IEEE.

关键词： Regression analysis

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MUSIZ: A generic framework for music resizing with stretching and cropping 11

MUSIZ: A generic framework for music resizing with stretchin...

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19th ACM International Conference on Multimedia ACM Multimedia 2011, MM'11

作者： Zhang, Liu Wang, Chaokun Ba, Yiyuan Wang, Hao Wang, Jianmin Department of Computer Science and Technology Tsinghua University China School of Software Tsinghua University Beijing 100084 China Tsinghua National Laboratory for Information Science and Technology China Key Laboratory for Information System Security Ministry of Education China Key Laboratory of Intelligent Information Processing Institute of Computing Technology CAS China

ISBN: (纸本)9781450306164

Content-aware music adaption, i.e. music resizing, in temporal constraints starts drawing attention from multimedia communities because of the need of real-world scenarios, e.g. animation production and radio advertisement production. The goal of music resizing is to change the length of a music track to a user preferred length using a series of basic operations, e.g. compression, prolonging, cropping and repeating. The only existing music resizing approach so far, called LyDAR, suffers from some limitations. For example, it cannot support prolonging a music track and cannot compress music pieces with very small stretch rates. In this paper, we propose MUSIZ, a generic framework for MUsic reSIZing. Observing the diversity of quality degradation for different segments, we propose the concept of stretch-resistance to measure the degree of quality degradation after a segment is stretched. MUSIZ stretches high stretch-resistance segments intensively and relieves low stretch-resistance segments to reduce the negative impact on the stretched music piece. For short length resizing requests, we develop a contiguity-preservative cropping algorithm to remove segments before stretching, while smoothing the abrupt change at the joint between two segments. Comprehensive experimental results show that MUSIZ is superior to the existing approaches. © 2011 ACM.

关键词： stretch-resistance music retargeting music resizing

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A general framework for rule acquisition based on tolerance granular computing in IIDSs

A general framework for rule acquisition based on tolerance ...

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2011 IEEE International Conference on Granular computing, GrC 2011

作者： Zuqiang, Meng Zhongzhi, Shi Ke, Xu College of Computer Electronics and Information Guangxi University Nanning 530004 China Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China

ISBN: (纸本)9781457703713

This paper systematically studies the problem of decision rule acquisition in inconsistent incomplete decision systems (IIDSs). First, a tolerance granular framework model based on tolerance granular computing is presented, which is suitable for variety types of decision rules in IIDSs;secondly, with the proposed model, a framework for acquiring all minimum decision rule sets for each type is given, which solves the problem of decision rule acquisition in IIDSs to a certain degree;finally, an example is given to show the efficiency of our framework. © 2011 IEEE.

关键词： Granular computing

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Parallel outlier detection using KD-tree based on MapReduce

Parallel outlier detection using KD-tree based on MapReduce

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2011 3rd IEEE International Conference on Cloud computing technology and Science, CloudCom 2011

作者： He, Qing Ma, Yunlong Wang, Qun Zhuang, Fuzhen Shi, Zhongzhi Key Laboratory of Intelligent Information Processing Institute of Computing Technology CAS Beijing 100190 China Graduate University of Chinese Academy of Sciences Beijing 100190 China

ISBN: (纸本)9780769546223

Distributed and Parallel algorithms have attracted a vast amount of interest and research in recent decades, to handle large-scale data set in real-world applications. In this paper, we focus on a parallel implementation of KD-Tree based outlier detection method to deal with large-scale data set. As one of the state-of-the-art outlier detection methods, KD-Tree based has been approved to be an effective algorithm. However, it still cannot process large-scale data set efficiently due to its serial implementation. Based on the current and powerful parallel programming framework - MapReduce, we propose to implement the parallel KD-Tree based outlier detection algorithm (e.g., PKDTree for short). Experimental results demonstrate the efficiency of PKDTree according to the evaluation criterions of scaleup, speedup and sizeup. © 2011 IEEE.

关键词： MapReduce

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Inverse system internal model control of DIFG wind power generator system based on matrix converter

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Taiyangneng Xuebao/Acta Energiae Solaris Sinica 2012年第11期33卷 1983-1991页

作者： Chen, Caixue Xie, Yunxiang Ma, Xueliang Key Laboratory of Intelligent Computing and Information Processing of Ministry of Education Xiangtan University Xiangtan 411105 China School of Electric Power South China University of Technology Guangzhou 510641 China Guangdong MingYang Wind Power Industry Group Co. Ltd Zhongshan 528437 China

Aim to solve the poor dynamic performance and the low disturbance resistance of PI power decoupling controller for DFIG power generator system based on matrix converter, this paper propose a nonlinear control algorithm for the AC-excitation DFIG system. First, we establish the mathematical model of the DFIG, based on the model, use the inverse system theory and deduce the inverse model, add the inverse model in series to the front of the original system model, develop the whole system to a pseudo linear system. Consider the system performance influenced by the parameters of the linearized model, we use the predictive control to improve the robustness. The simulation results show that the control strategy has fast response and good dynamic performance. The off-grid and cut-grid experimental data validate that under sub-synchronous or super-synchronous state, the stator voltage and frequency can maintain stability and achieve variable speed constant frequency operation.

关键词： Model predictive control

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Modeling for MIMO wireless channels in mine tunnels

Modeling for MIMO wireless channels in mine tunnels

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2011 International Conference on Electric information and Control Engineering, ICEICE 2011

ISBN: (纸本)9781424480395

The electromagnetic waves propagation situation is very complex in mine tunnels, so it is important to establish an efficient MIMO channel model for applying wireless communication technology to coal mine underground. A stochastic MIMO channel model is proposed firstly based on wireless propagation environment in mine tunnels, and then two spatial correlative channel models are established through correcting channel matrices based on abundant scatter environment. In this paper, the singular values and the channel capacity obtained with a Rayleigh channel model are compared, and system performance of different channel models are simulated. The simulation results indicate that established channel models are feasible by comparing with measurements results to mine tunnels. © 2011 IEEE.

关键词： MIMO systems

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