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The scientific literature corpus for Chinese negation and uncertainty identification

The scientific literature corpus for Chinese negation and un...

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14th Workshop on Chinese Lexical Semantics, CLSW 2013

作者： Chen, Zhancheng Zou, Bowei Zhu, Qiaoming Li, Peifeng School of Computer Science and Technology Soochow University Jiangsu 215006 China Key Lab. of Computer Information Processing Technology of Jiangsu Province Suzhou Jiangsu 215006 China

ISBN: (纸本)9783642451843

Negative and uncertain expressions widely exist in natural language. Negation and uncertainty identification has become an important task in computational linguistics community. Lacking of corpus hinders the development of Chinese negation and uncertainty identification. This paper reports on a corpus annotation project for Chinese negation and uncertainty identification on scientific literature. We introduce several important aspects during our annotation, such as selection of raw text, framework of annotation, guidelines, data consistency and statistic data summarized from corpus. In this corpus, we annotate negation and uncertainty cues and their corresponding scopes. Statistic for corpus shows that there are a certain proportion of negative and uncertain expressions in Chinese scientific literature. Accordingly, this corpus is able to support the research of Chinese negation and uncertainty identification in the future. © 2013 Springer-Verlag.

关键词： Computational linguistics

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Analysis and evaluation of jammer interference in LTE 13

Analysis and evaluation of jammer interference in LTE

引用

2013 2nd International Conference on Innovative Computing and Cloud Computing, ICCC 2013

作者： Xiao, Jiankai Wang, Xiaoting Guo, Qianghua Long, Hang Jin, Song Wireless Signal Processing and Network Lab. Beijing University of Posts and Telecommunications Ministry of Education Beijing 100876 China Beijing Institute of Tracking and Telecommunications Technology Beijing China

ISBN: (纸本)9781450321198

The Long Term Evolution (LTE) system is the evolution of Universal Mobile Telecommunications System (UMTS). The LTE system is now increasingly being deployed throughout the world. Therefore, the security of the LTE system is more and more significant. In this paper, we present a method of interference the LTE system, called jammer interference. It exploits the nature of the medium in wireless networks. Using the link budget in the LTE system, we are able to quantitatively analyze the impact of the jammer interference. For example, if the jammer power and height is 40dBm and 2m, respectively, and the location of the jammer is (R, R) (R is the cell radius), that is to say, the jammer is on the edge of the cell, we can get the blocking area is 3435.9m2 in the multi-cell LTE system. © 2013 ACM.

关键词： Universal Mobile Telecommunications System

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AUTO-LOCALIZATION IN AD-HOC MICROPHONE ARRAYS

AUTO-LOCALIZATION IN AD-HOC MICROPHONE ARRAYS

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IEEE International Conference on Acoustics, Speech and signal processing

作者： Nikolay D. Gaubitch W. Bastiaan Kleijn Richard Heusdens Signal and Information Processing Lab. Delft University of Technology Netherlands

ISBN: (纸本)9781479903573

We present a method for automatic microphone localization in ad-hoc microphone arrays. The localization is based on time-of-arrival (TOA) measurements obtained from spatially distributed acoustic events. In practice, measured TOAs are an incomplete representation of the true TOAs due to unknown onset times of the acoustic events and internal delays in the capturing devices and make the localization problem insoluble if not addressed appropriately. The main contribution of the proposed method is an algorithm that identifies and corrects for such internal delays and acoustic event onset times in the measured TOAs. Experimental results using both simulated and real-world data demonstrate the performance of the method and highlight the significance of correct estimation of the internal delays and onset times.

关键词： time of onset Microphone Device Component Acoustics Internal microphone arrays

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Corpus construction on polarity shifting in sentiment analysis

Corpus construction on polarity shifting in sentiment analys...

引用

14th Workshop on Chinese Lexical Semantics, CLSW 2013

作者： Li, Shoushan Lee, Sophia Yat Mei Huang, Chu-Ren Natural Language Processing Lab. School of Computer Science and Technology Soochow University China CBS Hong Kong Polytechnic University Hong Kong

ISBN: (纸本)9783642451843

Polarity shifting has been a challenge to automatic sentiment classification. In this paper, we create a corpus which consists of polarity-shifted sentences in the product reviews, where both the sentimental words and shifting trigger words are annotated. In particular, we group the polarity-shifted sentence structures into five main categories, i.e., negation, contrastive transition, modality, implication, and irrelevance Evaluation shows the statistics on the agreement of the annotation and the distribution of the five categories of polarity shifting is given. © 2013 Springer-Verlag.

关键词： Sentiment analysis

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A Hessenberg-based input balanced realization for all-pass systems

A Hessenberg-based input balanced realization for all-pass s...

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9th International Conference on Information, Communications and signal processing, ICICS 2013

作者： Hong, Tao Huang, Chaogeng Li, Gang Lim, Yong Ching Zhejiang Key Lab. for Signal Processing College of Information Engineering Zhejiang University of Technology 310023 Hangzhou China School of EEE Nanyang Technological University Singapore 639798 Singapore

ISBN: (纸本)9781479904341

In this paper, a novel Hessenberg-based input balanced realization for all-pass systems is derived. The expression of roundoff noise gain for this structure is obtained. An Nth order system implemented with a coupled all-pass sub-filters proposed in [18], in which each all-pass filter is realized using our proposed structure, yields a roundoff noise gain of N + 1, smaller than that of the classical optimal roundoff noise statespace realizations. A design example is presented to illustrate the behavior of the proposed structure and to compare it with a class of existing input balanced structures and the classical optimal roundoff noise realizations. It is shown that for the all-pass filters, the proposed structure outperforms the others in terms of minimizing roundoff noise as well as implementation efficiency. © 2013 IEEE.

关键词： All-pass filters

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Fuzziness-preserving attribute reduction from hybrid data

Fuzziness-preserving attribute reduction from hybrid data

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3rd Sino-Foreign-Interchange Workshop on Intelligent Science and Intelligent Data Engineering, IScIDE 2012

作者： Wei, Wei Liang, Jiye Qian, Yuhua Wang, Junhong Key Lab. of Computational Intelligence and Chinese Information Processing of Ministry of Education School of Computer and Information Technology Shanxi University Taiyuan Shanxi 030006 China

ISBN: (纸本)9783642366680

In this paper, we devote to present a fuzziness-preserving attribute reduction in fuzzy rough set framework. Through constructing the membership function of an object, we first introduce a fuzzy measure to assess the fuzziness of a fuzzy rough set and a fuzzy rough decision, which underlies a foundation for attribute reduction algorithm. Then, we derive an attribute significance measure based on the proposed fuzzy measure and design a forward greedy algorithm (ARBF) for attribute reduction from hybrid. Numerical experiments show the validity of the proposed algorithm from search strategy and heuristic function in the meaning of fuzziness-preserving. © Springer-Verlag 2013.

关键词： Membership functions

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Fusion Strategies for Distributed Speaker Recognition using Residual signal Based G729 Resynthesized Speech

Fusion Strategies for Distributed Speaker Recognition using ...

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International Conference on Information Fusion

作者： Dalila Yessad Abderrahmane Amrouche LCPTS Speech Communication and Signal Processing Lab. Faculty of Electronics and Computer Sciences

ISBN: (纸本)9781479902842

With the development of VoIP (Voice over IP) service, there is an emerging need to speech compression, particularly for digital speech communication and biometric speaker recognition (SR) systems. This paper presents results issued from Universal Background Gaussian Mixture Model (GMM UBM) based SR system, that is trained and tested on clean and G729 resynthesized speech. To overcome the performance loss due to the G729 codec, residual signal extracted from clean and G729 resynthesized database is used. To get better the performance, we investigated score fusion strategies based on Logistic Regression (LR). The first fusion based on GMM UBM score using LFCC (Linear Frequency Cepstrum Coefficients) and LFCC extracted from LP (Linear Prediction) residual signal. The second used the LFCC extracted from G729 resynthesized speech and its LP residual signal. The best performance is obtained by Logistic Regression (LR) fusion. The correct rate in the first case is 95% based baseline system and 83% based G729 resynthesized speech in the second case. The obtained results, using TIMIT database, have proven the efficiency of data fusion techniques for automatic speaker recognition.

关键词： VoIP G729 LP residual Score fusion Logistic Regression (LR) fusion

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Event argument extraction based on CRF

Event argument extraction based on CRF

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13th Chinese Lexical Semantics Workshop, CLSW 2012

作者： Hou, Libin Li, Peifeng Zhu, Qiaoming Cao, Yuan Natural Language Processing Lab. Soochow University Suzhou Jiangsu 215006 China School of Computer Science and Technology Soochow University Suzhou Jiangsu 215006 China

ISBN: (纸本)9783642363368

Event argument extraction is an important component of event extraction which plays a decisive role in whether event extraction can be applied to the actual. This paper proposes a method of event argument extraction based on Conditional Random Fields (CRFs). After employing frequently used features, we summarize all the features into five categories, i.e., lexical, semantic, dependency, syntactic and relative-position. More importantly, we propose using semantic role as a specific feature. Great efforts have been made to evaluate the performance by exploring various features and their combination. Experimental results show that semantic role is a good indicator for event argument extraction. © 2013 Springer-Verlag.

关键词： Extraction

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A Chinese sentence segmentation approach based on comma

A Chinese sentence segmentation approach based on comma

引用

13th Chinese Lexical Semantics Workshop, CLSW 2012

作者： Xu, Shengqin Kong, Fang Li, Peifeng Zhu, Qiaoming Natural Language Processing Lab. Soochow University Suzhou Jiangsu 215006 China School of Computer Science and Technology Soochow University Suzhou Jiangsu 215006 China

ISBN: (纸本)9783642363368

Chinese sentence segmentation is considered to be a very fundamental step in natural language processing. A successful solution for sentence boundary detection is a key step in the subsequent NLP tasks, such as parsing and machine translation, etc. In this paper, we consider comma as a sign-of-the-sentence boundary, and then divide it into two major types, i.e., the true (EOS) and the pseudo (Non-EOS). Finally, a system framework of Chinese sentence segmentation based on two-layer classifiers is presented and implemented. The experimental results on Chinese Treebank 6.0. Results show that our model achieve the F-measure of 90.7% overall, which improves by 1.5%. © 2013 Springer-Verlag.

关键词： Syntactics

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Performance Analysis of Cooperative HADF Relaying V2I Communication Systems for ND-symbol Burst Transmission using PSA-CE methods Over Quasi-Static Rayleigh Fading channels

Performance Analysis of Cooperative HADF Relaying V2I Commun...

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17th International IEEE Conference on Intelligent Transportation Systems & The Asia-Pacific Council on Systems Engineering Conference 2014

作者： Min Baek Gilwon Seo Chungha Bong Kyunbyoung Ko the Convergence-Information Technology Research Center for Next-Generation Intelligent Transport System (C-ITRC for NGITS) the Communication and Signal Processing Lab.(CSPL)the Department of IT ConvergenceKorea National University of Transportation50 Daehak-roChungju-siChungbuk380-702 Korea the Department of Control and Instrumentation Engineering Korea National University of Transportation50 Daehak-roChungju-siChungbuk380-702 Korea

In this paper,we derive the average symbol error rate(SER) for the ND-symbol burst hybrid adaptive decodeor-amplify-forward(HADF) relaying vehicle-to-infrastructure(V2I) communication systems over quasi-static independent and non-identical distributed(INID) Rayleigh fading *** proposed analytical approach includes channel estimation(CE)errors generated by practical pilot symbol assisted-CE(PSACE) ***,based on the error-events at relaying on board equipments(OBEs) for ND-symbol burst data transmission,the conditional SER expression has been derived as an exact ***,the approximated average SER(ASER)expressions are presented as the closed-forms and their accuracy is confirmed by the comparison with simulation ***,we can conclude that our analytical expressions are tractable forms,and can be used as a tool to verify effects of an erroneous detection and hybrid transmission at each relaying OBE on the combined signal-to-noise ratio(SNR) and ASER for cooperative HADF relaying communication systems.

关键词： SNR ADF Performance Analysis of Cooperative HADF Relaying V2I Communication Systems for ND-symbol Burst Transmission using PSA-CE methods Over Quasi-Static Rayleigh Fading channels Rayleigh

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