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Bias analyses of spontaneous facial expression database

Bias analyses of spontaneous facial expression database

引用

International Conference on Pattern Recognition

作者： Zhaoyu Wang Shangfei Wang Yachen Zhu Qiang Ji Key Laboratory of Computing and Communicating Software of Anhui Province School of Computer Science and Technology University of Science and Technology of China Hefei Anhui China Department of Electrical Computer and Systems Engineering Rensselaer Polytechnic Institute Troy NY USA

ISBN: (纸本)9781467322164

In this paper, cross-corpora evaluations are used to analyze the bias of spontaneous facial expression databases. Local binary pattern, Gabor, eigenface and fisherface features are extracted and applied to the four spontaneous expression databases: USTC-NVIE, VAM, Belfast Naturalistic and SEMAINE to recognize arousal (high/low) and valance (positive/negative) respectively. Experimental results indicate that there exists bias among different spontaneous expression databases. The emotion-induction methods, the variety of subjects and the quantity of raters may have caused such a bias.

关键词： Databases Feature extraction Face recognition Videos Principal component analysis Training

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A Hybrid of the prefix algorithm and the q-hidden algorithm for generating single negative databases

A Hybrid of the prefix algorithm and the q-hidden algorithm ...

引用

IEEE Symposium on Computational Intelligence in Cyber Security

作者： Liu, Ran Luo, Wenjian Wang, Xufa School of Computer Science and Technology University of Science and Technology of China Hefei 230027 Anhui China Anhui Key Laboratory of Software Engineering in Computing and Communication Hefei 230027 Anhui China

ISBN: (纸本)9781424499069

The negative database (NDB) is a complement of the corresponding database. The NDB could protect the privacy of the data, but it should be complete and hard-to-reverse. However, existent techniques cannot generate the complete and hard-to-reverse negative database. In this paper, a hybrid method is proposed to generate single negative databases. The proposed hybrid method includes two phases. Firstly, a complete negative database with a small size is generated by the transformation of the prefix algorithm. Secondly, a hard-to-reverse negative database, which is generated with the q-hidden method, is added into the small complete negative database. Therefore, the hybrid negative database is both complete and hard-to-reverse. Experiment results show that the NDB generated by the hybrid method is better than the NDB generated by the typical q-hidden method. Especially, the NDB generated by the q-hidden method can be reversed on average when the string length is 300. However, the NDB generated by the hybrid method cannot be reversed on average when the string length is 150. © 2011 IEEE.

关键词： Database systems

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Search Based Combinatorial Testing

Search Based Combinatorial Testing

引用

Asia-Pacific Conference on software Engineering

作者： Changhai Nie Huayao Wu Yalan Liang Hareton Leung Fei-Ching Kuo Zheng Li State Key Laboratory for Novel Software Technology Nanjing University Nanjing China Faculty of Information and Communication Technologies Swinburne University of Technology VIC Australia Department of Computing Hong Kong Polytechnic University Hong Kong China Department of Computer Science Beijing University of chemical Technology Beijing China

Search techniques can dramatically change our ability to solve a host of problems in applied science and engineering, many search techniques have been developed and applied successfully in many fields, including search based software engineering (SBSE). As a key problem of combinatorial testing, covering array generation has been widely studied and many search techniques have been applied which can be named as search based combinatorial testing (SBCT). SBCT is a branch of search based software testing (SBST) within SBSE. In this paper, to explore the applicability and effectiveness of SBCT, we design six variants from existing search algorithms: Genetic Algorithm, Particle Swarm Optimization and Ant Colony Algorithm by reversing and randomizing their mechanisms. We study their effectiveness in terms of generating a covering array and compare their performance. Experiments show that these search techniques can work well with distinct performance in covering array generation. We believe that these search techniques can be further improved by fine-tuning their configuration and used in broad ranges of area.

关键词： Arrays Testing Algorithm design and analysis Search problems software engineering software algorithms

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Test case generation based on program invariant and adaptive random algorithm

Test case generation based on program invariant and adaptive...

引用

2011 International Conference on Computer Science and Education, CSE 2011

作者： Yuan, Yuan Fanping, Zeng Guanmiao, Zhu Chaoqiang, Deng Neng, Xiong Department of Computer University of Science and Technology of China China Anhui Province Key Lab. of Software in Computing and Communication Hefei Anhui China

ISBN: (纸本)9783642224171

Testing is a critical activity to find software errors. And choosing an effective test suite is the key problem in software testing area. Program invariant, as an attribute of program, can record the implementation state of test case very well and reveal the coverage of program data. In this paper, we integrate adaptive random testing and invariant technology, and present a new method which makes full use of the feedback information of program invariant and invalid case suite to generate the next case. Experiment results show that, compared with other similar methods, running for the same time, our method can achieve higher coverage and faster convergence speed. © 2011 Springer-Verlag.

关键词： software testing

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On the self representation based on the adaptive self radius

On the self representation based on the adaptive self radius

引用

4th International Workshop on Advanced Computational Intelligence, IWACI 2011

作者： Zhang, Jie Luo, Wenjian School of Computer Science and Technology University of Science and Technology of China Hefei 230027 Anhui China Anhui Key Laboratory of Software Engineering in Computing and Communication University of Science and Technology of China Hefei 230027 Anhui China

ISBN: (纸本)9781612843735

Self representation problem is very important for the negative selection algorithms. In this paper, two methods, named as K-NN-ASR and B-NN-ASR, are proposed to calculate the self radius of a self sample in the continuous space. As for the K-NN-ASR, the self radius of a self sample is calculated according to the distances from itself to the surrounding self samples. In the B-NN-ASR, both the position of the self sample and the distances to the surrounding self samples are considered. Experiments are done to test the performance of the proposed methods. Experimental results demonstrate that the proposed methods are competitive, and the B-NN-ASR is better. © 2011 IEEE.

关键词： selection algorithm Self tuning CONTINUOUS SPACE

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Directed differential evolution based on directional derivative for numerical optimization problems

Directed differential evolution based on directional derivat...

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2011 11th International Conference on Hybrid Intelligent Systems, HIS 2011

作者： Zhang, Jun Luo, Wenjian School of Computer Science and Technology University of Science and Technology of China Hefei 230027 Anhui China Anhui Province Key Laboratory of Software Engineering in Computing and Communication University of Science and Technology of China Hefei 230027 Anhui China

ISBN: (纸本)9781457721502

Differential Evolution is one kind of Evolutionary Algorithms, which has been successfully applied to solve many optimization problems. In this paper, a directed differential mutation (DDM), which utilizes the directional derivative to decide a suitable search direction and a proper mutation step size, is proposed. It is merged into the classical DE to form a new algorithm, named directed differential evolution (DDE). The performance of the DDE is tested on 23 classical problems for numerical optimization. The experimental results demonstrate that the performance of the DDE outperforms the classical DE on most functions. © 2011 IEEE.

关键词： Evolutionary algorithms

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A sea-land segmentation scheme based on statistical model of sea

A sea-land segmentation scheme based on statistical model of...

引用

4th International Congress on Image and Signal Processing, CISP 2011

作者： You, Xin Li, Weihai MOE-Microsoft Key Laboratory of Multimedia Computing and Communication University of Science and Technology of China Hefei Anhui China

ISBN: (纸本)9781424493067

Sea-land segmentation is a key step for target detection. Due to the complex texture and uneven gray value of the land in optical remote sensing image, traditional sea-land segmentation algorithms often recognize land as sea incorrectly. A new segmentation scheme is presented in this paper to solve this problem. This scheme determines the threshold according to the adaptively established statistical model of the sea area, and removes the incorrectly classified land according to the difference of the variance in the statistical model between land and sea. Experimental results show our segmentation scheme has small computation complexity, and it has better performance and higher robustness compared to the traditional algorithms. © 2011 IEEE.

关键词： Optical remote sensing

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Edge saliency map detection with texture suppression

Edge saliency map detection with texture suppression

引用

International Conference on Image and Graphics

作者： Ao, Huanhuan Yu, Nenghai MOE-Microsoft Key Laboratory of Multimedia Computing and Communication University of Science and Technology of China Hefei Anhui China

ISBN: (纸本)9780769545417

Edge is a basic feature in the field of computing vision. So to find edge saliency map is an indispensable operation for many applications on image processing. In this paper we present a fast algorithm to find edge saliency map for a natural image. The approach integrates three basic edge features: edge gradient value, edge segment length and edge density, and it works well to detect salient region boundaries and to suppress ill edges from texture. An edge saliency map can be used to image segmentation and boundaries detection. Experimental results demonstrate that our algorithm outperforms other edge saliency detection methods. Finally, our algorithm is applied on salient objects segmentation, compared with several stateof- the-art salient region detection methods and the results show our work is valuable. © 2011 IEEE.

关键词： Image segmentation

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An automatic matching algorithm based on SIFT descriptors for remote sensing ship image

An automatic matching algorithm based on SIFT descriptors fo...

引用

International Conference on Image and Graphics

作者： You, Xin Yu, Nenghai MOE-Microsoft Key Laboratory of Multimedia Computing and Communication University of Science and Technology of China HeFei Anhui China

ISBN: (纸本)9780769545417

SIFT judge the true or false targets according to the density of matching feature points. But for different images, the numbers of matching feature points are different, the density is different. So SIFT can't judge the real targets automatically, requiring human-computer interaction. This paper proposes an algorithm based on SIFT realizing the automatic judgment of real targets. Firstly, do the image segmentation. Secondly, match the feature points in every area. At last, do frequency domain analysis for each matching feature vectors. The experimental results show that our algorithm solves the problem that SIFT judges the real target needing human-computer interaction. and also, our algorithm can determine the location and number of real targets. © 2011 IEEE.

关键词： Frequency domain analysis

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Implicit interpolation of time vector series

Implicit interpolation of time vector series

引用

2011 7th International Conference on Natural Computation, ICNC 2011

作者： Li, Dao-Lun Zha, Wen-Shu Lu, De-Tang Department of Modern Mechanics University of Science and Technology of China China Key Laboratory of Software in Computing and Communication of Anhui Province University of Science and Technology of China Hefei 230027 China

ISBN: (纸本)9781424499533

Time vector series abound in many fields, which are different from time series. Based on mapping and implicit function interpolation, the method of implicit interpolation over time vector series is developed and studied. Time vector series are mapped into a sequence of closed curves or surfaces, which are seen as the interpolation data set. Based on the interpolation data set, the implicit interpolation function is constructed and from which an isoline is drawn. The inverse mapping of the isoline is the prediction of vector series at the new time. Based on the well logging data an application is given to predict the unknown isotope logging data of year 2004 with the known data of year 2003 and 2005 which shows the performance of the method. © 2011 IEEE.

关键词： Mapping

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