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检索条件"机构=MOE Key Laboratory of Symbolic Computation and Knowledge Engineering"

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Visual saliency and extended hidden markov model based approach for image splicing detection

Visual saliency and extended hidden markov model based appro...

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2013 International Conference on Mechanical and Electronics engineering, ICMEE 2013

作者： Li, Xiang Shen, Xuan Jing Lv, Ying Da Chen, Hai Peng College of Computer Science and Technology Jilin University Changchun Jilin China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin China

ISBN: (纸本)9783037858103

In order to improve the detection accuracy of spliced images, a new blind detection based on visual saliency was proposed in this paper. Firstly, create the edge conspicuous map by an improved OSF-based method, and extract fixations by visual attention model. Then locate those fixations on conspicuous edges by conspicuous edge positioning method. Accordingly, key feature fragments can be captured. Secondly, extract Extended Hidden Markov Model features, and reduce their dimension by SVM-RFE. Finally, support vector machine was exploited to classify the authentic and spliced images. The experimental results showed that, when testing on the Columbia image splicing detection dataset, the detection accuracy of the proposed method was 96.68%. © (2013) Trans Tech Publications, Switzerland.

关键词： Hidden Markov models

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Mining attributes' sequential patterns for error identification in data set

Mining attributes' sequential patterns for error identificat...

引用

International Conference on Machine Learning and Cybernetics, ICMLC 2005

作者： Liu, Ya-Bo Liu, Da-You College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education Jilin University Changchun 130012 China

ISBN: (纸本)078039092X

It is well recognized that sequential pattern mining plays an essential role in many scientific and business domains. In this paper, a new extension of sequential pattern, attributes' sequential pattern, is proposed. An attributes' sequential pattern is a sequence of attributes, whose values commonly occur in ascending order over data set. After each record in data set is transformed into an attributes' sequence according to their ordinal values, attributes' sequential patterns can be mined by means of mining sequential patterns. But our work is different from sequential pattern mining. One use of attributes' sequential patterns is to identify possible errors in data set for data cleaning, in which the values of attributes break the attributes' sequential patterns which most of the data conform to. Experiments verify the high efficiency of the method presented. © 2005 IEEE.

关键词： Data mining

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BSDIFF Difference Algorithm Based on LZMA2 for In-Vehicle ECUs 7th

BSDIFF Difference Algorithm Based on LZMA2 for In-Vehicle EC...

引用

7th International Conference on Computing, Control and Industrial engineering, CCIE 2023

作者： Li, Zhihao Qin, Guihe Liang, Yanhua Danzengouzhu Yang, Lifeng College of Computer Science and Technology Jilin University Changchun130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun130012 China

ISBN: (纸本)9789819927296

With cars becoming the primary choice of people’s daily travel, on-board OTA upgrade technology has arisen a common concern in the automotive industry. Traditional on-board OTA upgrade technology, which adopts a method of updating the whole package, successfully avoids offline upgrade. However, it takes too long to download the whole update package and upgrade in-vehicle ECUs because of the huge data transmission. In addition, packet loss and disconnection are easy to occur in case of network congestion. As a result, it will seriously affect users’ online upgrade experience. Therefore, incremental update technology should be used instead of updating the whole package in on-board OTA upgrade technology. In order to solve above problems, in this paper, we propose an improved BSDIFF difference algorithm based on LZMA2 compression algorithm to realize the incremental update of on-board OTA. Traditional BSDIFF can generate a patch file according to an old app and a new app. And a patch file is far smaller than the corresponding new app, which is conducive to remote transmission and reduces the download time of users. Through our experiments, LZMA2-based BSDIFF has a better compression ratio than traditional BSDIFF, which is more suitable for the incremental update of in-vehicle ECUs with limited memory resources. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Automotive industry

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Discovering Skyline Periodic Itemset Patterns in Transaction Sequences 9th

Discovering Skyline Periodic Itemset Patterns in Transactio...

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19th International Conference on Advanced Data Mining and Applications, ADMA 2023

作者： Chen, Guisheng Li, Zhanshan College of Computer Science and Technology Jilin University Changchun130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun130012 China

ISBN: (纸本)9783031466601

As an extended version of frequent itemset patterns, periodic itemset patterns concern both the frequency and periodicity of itemsets at the same time, so they contain more information than frequent itemset patterns, which only concern the frequency. With further research, we found that, in some cases, the periodic itemset patterns with higher frequency, or with optimal periodicity, or with both higher frequency and optimal periodicity have higher application value. However, there is currently no work focusing on such a kind of periodic itemset patterns. In view of this, this paper first proposes a new concept of skyline periodic itemset patterns, and states the problem of skyline periodic itemset pattern mining, then presents an algorithm called SLPIM (SkyLine Periodic Itemset pattern Miner) for skyline periodic itemset pattern mining. SLPIM first adopts the well-known FP-Growth algorithm to mine all frequent itemset patterns, and then uses an effective judgment strategy to determine which frequent itemset patterns are skyline periodic itemset patterns. Finally, experiments are conducted on two real-world and two simulated datasets. The results show that SLPIM is competent for mining skyline periodic itemset patterns. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.

关键词： Data mining

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Service community model for web service composition

Service community model for web service composition

引用

2009 International Workshop on Intelligent Systems and Applications, ISA 2009

作者： Liu, Si-Pei Liu, Da-You Cao, Yao-Fu Qi, Hong College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education Jilin University Changchun 130012 China

ISBN: (纸本)9781424438945

In this paper, we introduce two concepts of service semantic relation and semantic relation chain to figure out service composition relation and sequentially service composition. For parallel service composition, we propose web service community (WSC) model which corresponding to a Split+Join structure, So we introduce a kind of divide and conquer method to convert parallel service composition into sequentially service composition based on WSC chains and which can solve sequential and parallel service composition problems in an agreement way. Finally, a parallel composition example illustrations the execution process of our method. © 2009 IEEE.

关键词： Web services

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Combinative reasoning with RCC5 and cardinal direction relations

引用

2nd International Conference on knowledge Science, engineering and Management, KSEM 2007

作者： Juan, Chen Dayou, Liu Changhai, Zhang Qi, Xie College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education Jilin University Changchun 130012 China

ISBN: (纸本)9783540767183

It is inadequate considering only one aspect of spatial information in practical problems, where several aspects are usually involved together. Reasoning with multi-aspect spatial information has become the focus of qualitative spatial reasoning. Most previous works of combing topological and directional information center on the combination with MBR based direction model or single-tile directions. The directional description is too approximate to do precise reasoning. Different from above, cardinal direction relations and RCC5 are introduced to represent directional and topological information. We investigate the mutual dependencies between basic relations of two formalisms, discuss the heterogeneous composition and give the detail composing rules. Then point out that only checking the consistency of topological and directional constraints before and after entailing by the constraints of each other respectively will result mistakes. Based on this, an improved constraint propagation algorithm is presented to enforce path consistency. And the computation complexities of checking the consistency of the hybrid constraints over various subsets of RCC5 and cardinal direction relations are analyzed at the end. © Springer-Verlag Berlin Heidelberg 2007.

关键词： Information analysis

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A new taxonomy of coordination models based on interaction types

A new taxonomy of coordination models based on interaction t...

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2006 International Conference on Artificial Intelligence, ICAI'06

作者： Jiang, Li Liu, Da-You College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun 130012 China

ISBN: (纸本)9781932415988

Coordination models can be classified into several classes, such as data-driven vs. control-driven coordination models, dependent vs. emergent coordination models, and hybrid coordination models. All these classifications are based upon implementation details. However, interaction is the kernel aspect of coordination, and coordination is the outcome of interactions between agents, so here, we give another kind of taxonomy based on interaction types, which are coordination models based on direct interactions and indirect interactions. Using this taxonomy, all coordination models are classified into two classes with no intersection, in addition, coordination models with indirect interactions and emergent behaviors are the direction of future work.

关键词： Multi agent systems

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A modal representation of RCC62

A modal representation of RCC62

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5th International Conference on Computer Sciences and Convergence Information Technology, ICCIT 2010

作者： Fu, Qian Ouyang, Ji-Hong Liu, Da-You College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun 130012 China

ISBN: (纸本)9788988678299

The major problem in developing a useful formalism for reasoning about spatial information is the trade off between expressive power and computational tractability. Based on Bennett's modal representation of convex-hull and the RCC62 model which describes the topological relation between simple concave regions, the modal representation of RCC62 is presented in this paper, which has a theoretical advantage over 1st-order representations.

关键词： Economic and social effects

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Improved semantic retrieval method based on domain ontology

Improved semantic retrieval method based on domain ontology

引用

6th International Conference on Fuzzy Systems and knowledge Discovery, FSKD 2009

作者： Yuan, Dong-Hui Liu, Da-You Shen, Shi-Qun Yan, Pu College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun 130012 China

ISBN: (纸本)9780769537351

Semantic retrieval is a hot area of Web search technology constantly because of the growing information. This paper proposed a creative semantic retrieval method with Path Weight Semantic Distance (PWSD) algorithm which is improved from current model. Based on the domain ontology built by protégé, PWSD considers both the hierarchy and the property restrictions of the concepts synthetically, and provides an accurate computation of semantic distance between conceptions. We have investigated the feasibilities, advantages and statistical significances from the comparison between our system and personalized categorization system (PCAT) and found that our system has high performances with 95% or higher statistical significance for short queries tasks. © 2009 IEEE.

关键词： Semantics

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Flow Monitoring Alarm Module Application for In-Vehicle CAN Bus Networks 7th

Flow Monitoring Alarm Module Application for In-Vehicle CAN ...

引用

7th International Conference on Computing, Control and Industrial engineering, CCIE 2023

作者： Liu, Wanning Qin, Guihe Yang, Lifeng Liang, Yanhua College of Computer Science and Technology Jilin University Changchun130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun130012 China

ISBN: (纸本)9789819927296

As control modules in cars become intelligent and automated, electrical systems become more complex. Dozens or even hundreds of electronic control units (ECUs) are used in many cars. In this case, the information security problem of the car is also latent in the dark. When the actual application load ratio of the CAN bus exceeds more than 30%, the delay of data communication and the probability of error frames multiply, causing serious communication congestion. A malicious intruder only needs to affect the bus data traffic to cause the collapse of the CAN bus network, which in turn changes the behavior of the car and has irreversible consequences. In order to enable the CAN bus to maintain its advantages, it can adapt to the new needs of contemporary in-vehicle networks with higher performance and more reliable security protection. In the paper, we propose a flow monitoring alarm module built into the in-vehicle CAN. This module embeds a statistical algorithm based on information theory. The algorithm has a small amount of computation and clear logic, which meets the lightweight requirements of embedded algorithms. Through multiple experiments, the module can monitor all Dos for in-vehicle CAN, as well as other traffic abnormalities with a monitoring alarm rate of more than 98%. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Microcontrollers

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