检索结果-内蒙古大学图书馆

2012 5th Global Symposium on Millimeter-Waves, GSMM 2012

作者： Li, Xiaoji Qin, Xiuying Zheng, Lin Qiu, Hongbing Guangxi Key Lab. of Wireless Wideband Communication and Signal Processing Guilin Univ. of Electronic Technology Guilin 541004 China Sci. and Technol. on Information Transmission and Dissemination in Communication Networks Laboratory ShiJiaZhuang 050081 China National Key Lab. of Integrated Service Networks Xidian University Xi'an 710071 China

ISBN: (纸本)9781467313032

In order to reduce the energy requirement in wireless sensor networks, an energy-efficient multihop broadcast synchronization algorithm simultaneously operated in double broadcast domain is proposed. The algorithm is based on receiver-receiver synchronization (RRS). Node synchronization range is expanded to two broadcast domains by peer-to-peer broadcasting message in a pair of synchronized nodes which need to broadcast message one more time. Then, building a hierarchical structure with two root nodes, the algorithm is extended to the network-wide. Simulation results show that the proposed algorithm requires much less timing messages, then lower energy-consumption for network-wide synchronization then other well-known algorithms. © 2012 IEEE.

关键词： Synchronization

来源：评论

学校读者我要写书评

暂无评论

Lattice attack on the knapsack cipher 0/255

Lattice attack on the knapsack cipher 0/255

引用

2012 4th International Conference on Intelligent Networking and Collab.rative Systems, INCoS 2012

作者： Wang, Baocang Lei, Hao State Key Laboratory of Integrated Service Networks Xidian University Xi'an 710071 China Guangxi Key Lab. of Wireless Wide Band Communication and Signal Processing Guilin University of Electronic Technology 541004 Guilin China Security and Privacy Lab. CRDU Huawei Technologies Co. Ltd. Beijing 100095 China

ISBN: (纸本)9780769548081

A recently-proposed knapsack public key cryptosystem called knapsack cipher 0/255 is crypt analyzed. It is pointed out that a lattice can be derived from the public key of the knapsack cipher 0/255. The corresponding secret key can be recovered by finding the shortest nonzero vector with lattice basis reduction algorithms. Thus the knapsack cipher 0/255 is insecure. © 2012 IEEE.

关键词： Public key cryptography

来源：评论

学校读者我要写书评

暂无评论

Head-driven hierarchical phrase-based translation

Head-driven hierarchical phrase-based translation

引用

50th Annual Meeting of the Association for Computational Linguistics, ACL 2012

作者： Li, Junhui Tu, Zhaopeng Zhou, Guodong Van Genabith, Josef Centre for Next Generation Localisation School of Computing Dublin City University Ireland Key Lab. of Intelligent Info. Processing Chinese Academy of Sciences Institute of Computing Technology China School of Computer Science and Technology Soochow University China

ISBN: (纸本)9781937284251

This paper presents an extension of Chiang's hierarchical phrase-based (HPB) model, called Head-Driven HPB (HD-HPB), which incorporates head information in translation rules to better capture syntax-driven information, as well as improved reordering between any two neighboring non-terminals at any stage of a derivation to explore a larger reordering search space. Experiments on Chinese-English translation on four NIST MT test sets show that the HD-HPB model significantly outperforms Chiang's model with average gains of 1.91 points absolute in BLEU. © 2012 Association for Computational Linguistics.

关键词： Translation (languages)

来源：评论

学校读者我要写书评

暂无评论

The Forecasting Model of Flight Delay Based On DMT-GMT Model

引用

Physics Procedia 2012年 33卷 395-402页

作者： Jianli Ding Huafeng Li College of Computer Science and Technology Civil Aviation University of China Tianjin Key Lab for Advanced Signal Processing Civil Aviation University of China Tianjin 300300 China College of Computer Science and Technology Civil Aviation University of China Tianjin Key Lab for Advanced Signal Processing Civil Aviation University of China Department of computer technologyTangshan Teacher College Tianjin 300300 China

In order to solve the problem of flight delay forecasting including the characteristics of airport flight operation, a new composite forecasting model based on the danger model theory and the grey model theory is proposed in this paper. The composite prediction method in this paper uses the pattern of weighted composition which is according to the occupancy proportion of the mean square errors forecasting .The model use the modified approach reflects the periodicity. The experimental result shows that the prediction results is qualified, the new model can meet the requirement of real—time prediction for the management of emergency departments.

关键词： Flight delay Danger model theory Grey model Composite prediction Antigen recognition

来源：评论

学校读者我要写书评

暂无评论

Using Syntactic Head Information in Hierarchical Phrase-Based Translation 7

Using Syntactic Head Information in Hierarchical Phrase-Base...

引用

7th Workshop on Statistical Machine Translation, WMT 2012, immediately following the Conference of the North-American Chapter of the Association for Computational Linguistics - Human Language Technologies, NAACL HLT 2012

作者： Li, Junhui Tu, Zhaopeng Zhou, Guodong Genabith, Josef Van Centre For Next Generation Localisation School Of Computing Dublin City University Ireland Key Lab. Of Intelligent Info. Processing Institute Of Computing Technology Chinese Academy Of Sciences China School Of Computer Science And Technology Soochow University China

ISBN: (纸本)9781937284206

Chiang's hierarchical phrase-based (HPB) translation model advances the state-of-the-art in statistical machine translation by expanding conventional phrases to hierarchical phrases - phrases that contain sub-phrases. However, the original HPB model is prone to overgeneration due to lack of linguistic knowledge: the grammar may suggest more derivations than appropriate, many of which may lead to ungrammatical translations. On the other hand, limitations of glue grammar rules in the original HPB model may actually prevent systems from considering some reasonable derivations. This paper presents a simple but effective translation model, called the Head-Driven HPB (HD-HPB) model, which incorporates head information in translation rules to better capture syntax-driven information in a derivation. In addition, unlike the original glue rules, the HD-HPB model allows improved reordering between any two neighboring non-terminals to explore a larger reordering search space. An extensive set of experiments on Chinese-English translation on four NIST MT test sets, using both a small and a large training set, show that our HDHPB model consistently and statistically significantly outperforms Chiang's model as well as a source side SAMT-style model. ©2012 Association for Computational Linguistics.

关键词： Syntactics

来源：评论

学校读者我要写书评

暂无评论

A new method for radar maneuvering target detection based on matched filtering in two-dimensional frequency domain

引用

Tien Tzu Hsueh Pao/Acta Electronica Sinica 2012年第12期40卷 2415-2420页

作者： Wu, Sun-Yong Liao, Gui-Sheng Zhu, Sheng-Qi Yang, Zhi-Wei Department of Computational Science and Mathematics Guilin University of Electronic Technology Guilin Guangxi 541004 China National Lab. of Radar Signal Processing Xidian University Xi'an Shaanxi 710071 China

Increasing integration time can improve the detection performance of weak targets. However, the signal energy could not be effectively accumulated, because the high-speed motion of a target induces range migration and Doppler walk in long-time coherent integration period. Thus the motion compensation is necessary. Unfortunately, the traditional methods based on keystone transform are only suitable for uniform motion targets, while the range curvature of maneuvering targets can not be corrected by keystone transform. In this paper, for moving target with constant acceleration and Doppler ambiguity, a new method is proposed by constructing the two-dimensional compression function in range-Doppler frequency domain, which can eliminate the coupling effect between range and azimuth. This method does not require target velocity parameters and can correct the range migration caused by radial velocity and radial acceleration. The proposed algorithm can be efficiently implemented by using fast Fourier transform without interpolation and thus has low computational complexity. Simulation results show that the proposed algorithm improves the performance for detecting high-speed maneuvering targets.

关键词： Fast Fourier transforms

来源：评论

学校读者我要写书评

暂无评论

Efficient folded VLSI architectures for linear prediction error filters 12

Efficient folded VLSI architectures for linear prediction er...

引用

22nd Great Lakes Symposium on VLSI, GLSVLSI'2012

作者： Salehi, Sayed Ahmad Amirfattahi, Rasoul Parhi, Keshab K. Department of Electrical and Computer Engineering Digital Signal Processing Research Lab Isfahan University of Technology P.O.Box 84156-83111 Isfahan Iran Department of Electrical and Computer Engineering University of Minnesota 200 Union Street SE Minneapolis MN 55455 United States

ISBN: (纸本)9781450312448

In this paper we propose two efficient low-area, low-power folded VLSI architectures for linear prediction error filter. One of them is based on the split-Levinson-Durbin and requires half computational complexity of an architecture based on the Levinson-Durbin algorithm. The other one is based on the Schur algorithm. Using folding method, the number of multipliers and adders is minimized. In addition, by modifications in data scheduling, the number of required multiplexers are also decreased. Comparison with previous architectures demonstrates the efficiency of the proposed architectures with respect to hardware and computational complexity. Copyright 2012 ACM.

关键词： Computational complexity

来源：评论

学校读者我要写书评

暂无评论

Real-time classification of Persian musical Dastgahs using artificial neural network

Real-time classification of Persian musical Dastgahs using a...

引用

International Symposium on Artificial Intelligence and signal processing (AISP)

作者： H. Hajimolahoseini R. Amirfattahi M. Zekri Digital Signal Processing Research Lab Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan Iran

In this paper, a three layer artificial neural network is proposed that, independent of Root note selection, classifies the Persian musical Dastgahs into five main groups: Shur, Homayun, Segah, Chahargah and Mahur. It implies the training of the network in order to be able to classify all of 120 possible cases for the Persian musical Dastgahs based on 24 different Root notes in an octave of Persian music. The network receives a vector of 24 possible notes of an octave in which the used notes are represented by a “1” and unused notes are represented by a “0”. After training, the network is able to correctly classify 100 percent of the 120 possible cases for Persian musical Dastgahs in five main groups.

关键词： Training Neurons Vectors Multiple signal classification Artificial neural networks Support vector machine classification Biological neural networks

来源：评论

学校读者我要写书评

暂无评论

Information granularity and granular structure in decision making

Information granularity and granular structure in decision m...

引用

7th International Conference on Rough Sets and Knowledge technology, RSKT 2012

作者： Wang, Baoli Liang, Jiye Qian, Yuhua Department of Applied Mathematics Yuncheng University Yuncheng 044000 Shanxi China Key Lab. of Computational Intelligence and Chinese Information Processing of Ministry of Education School of Computer and Information Technology Shanxi University Taiyuan 030006 Shanxi China

ISBN: (纸本)9783642318993

Multiple criteria decision making (MCDM) has received increasing attentions in both engineering and economic fields. Weights of the criteria directly affect decision results in MCDM, so it is important for us to acquire the appropriate weights of the criteria. In some decision making problems, experts always express their preference by multiplicative preference relation and fuzzy preference relation. In this paper, an objective method based on information granularity is proposed for acquiring weights of the criteria in MCDM. Moreover, we prove that the essence of a consistence preference relation is a partial relation, and analyze the corresponding partial granular structure of the alternative set according to the given partial relation. © 2012 Springer-Verlag.

关键词： Decision making

来源：评论

学校读者我要写书评

暂无评论

Evaluation of literature frontier based on latent semantic analysis

Evaluation of literature frontier based on latent semantic a...

引用

IEEE Symposium on Robotics and Applications (ISRA)

作者： Panpan Yin Rongyi Cui Intelligent Information Processing Lab. Department of Computer Science & Technology Yanbian University Yanji China

In this paper, a literature frontier evaluation method based on latent semantic analysis was proposed in terms of collection of front keywords and the surface information of literature. Firstly, to build the collection of front keywords, the frontier metric of keyword was studied for evaluating the frontier of keyword. Secondly, the collection of front literatures was achieved according to the built collection of front keywords and the latent semantic space of front literatures was built in terms of the front literatures' surface information such as title, keywords and abstract. Finally, the frontier of new literature was evaluated in terms of the frontier of each front literature, the semantic relevance with each front literature, and the impact factor of the journal which the new literature belonged to. The experimental results show that the collection of front keywords built by proposed frontier metric outperforms the academic hotspots achieved by the existing research platform of academic hotspots, and the proposed method is proved to be reasonable with the positive correlation between the frontier score of new literature and each of the impact factor of journal and the published year of literature.

关键词： Bibliometrics Semantics Text categorization Frequency measurement Robots

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：