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EvoWorkshops 2006: EvoBIO, EvoCOMNET, EvoHOT, EvoIASP, EvoINTERACTION, EvoMUSART, and EvoSTOC

作者： Tianzhu, Wang Wenhui, Li Yi, Wang Zihou, Ge Dongfeng, Han Key Laboratory of Symbol Computation and Knowledge Engineering Jilin University Ministry of Education Changchun 130012 China

ISBN: (纸本)3540332375

In this paper, we present an efficient method for detecting collisions between highly deformable objects, which is a combination of newly developed stochastic method and Particle Swarm Optimization (PSO) algorithm. Firstly, our algorithm samples primitive pairs within the models to construct a discrete binary search space for PSO, and in this way user can balance performance and detection quality. Besides a particle update process is added in every time step to handle the dynamic environments caused by deformations. Our algorithm is also very general that makes no assumptions about the input models and doesn't need to store additional data structures either. In the end, we give the precision and efficiency evaluation about the algorithm and find it might be a reasonable choice for complex deformable models in collision detection systems. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Intelligent agents

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Combining greedy method and genetic algorithm to identify transcription factor binding sites

Combining greedy method and genetic algorithm to identify tr...

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6th International Conference on Hybrid Intelligent Systems and 4th Conference on Neuro-Computing and Evolving Intelligence, HIS-NCEI 2006

作者： Wanyu, Wang Xiaoyu, Chang Chunguang, Zhou Key Laboratory of Symbol Computation and Knowledge Engineering Juin University Ministry of Education Changchun 130012 China

ISBN: (纸本)0769526624

Identification of Transcription Factor Binding Sites (TFBS) from the upstream region of genes remains a highly important and unsolved problem particularly in higher eukaryotic genomes. In this paper, we propose a novel approach to identify transcription factor binding sites. This approach combines greedy method and genetic algorithm (CGGA) to search conserved segment in the given sequence set. A new greedy method which can efficiently search a local optimal result is proposed. In order to solve the high complexity of this algorithm, we also give an effective improvement for this method. Then, we describe how to combine genetic algorithm with this greedy method to find the more optimal results. Greedy method is combined to the fitness function of the genetic algorithm. We apply this approach on two different TFBS sets and the results show that it can find correct result both effective and efficient, and for CRP binding sites, it get a more accurate result than Gibbs Sampler, AlignACE and MDGA. © 2006 IEEE.

关键词： Transcription factors

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A novel method for mining sequential patterns in datasets

A novel method for mining sequential patterns in datasets

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ISDA 2006: Sixth International Conference on Intelligent Systems Design and Applications

作者： Xiaoyu, Chang Chunguang, Zhou Zhe, Wang Ping, Hu Jilin University Key Laboratory of Symbol Computation and Knowledge Engineering Ministry of Education Changchun 130012 China

ISBN: (纸本)0769525288

Sequential pattern mining is one of the most important fields in data mining. In this paper, we propose a novel algorithm FSPAN (Fast Sequential Pattern mining algorithm) to do the sequence mining. FSPAN can mine all the frequent sequential patterns in large datasets and it integrates a depth-first traversal approach with an effective pruning mechanism. This pruning mechanism solves the problem of searching frequent sequences in a sequence database by searching frequent items or frequent itemsets, which makes this method very efficient. Moreover, the databases scanned via FSPAN keep shrinking quickly, which makes the algorithm more efficient when the sequential patterns are longer. Experiments on standard test data show that FSPAN is very effective. © 2006 IEEE.

关键词： Data mining

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A Hybrid Markov Model Based on EM Algorithm

A Hybrid Markov Model Based on EM Algorithm

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International Conference on Control, Automation, Robotics and Vision (ICARCV)

作者： Xue-gang Yu Yan-heng Liu Da Wei Ling-yin Lei Key laboratory of symbolic computation and knowledge Engineering of ministry of education Jilin University Beijing China

Order-k Markov model can be used in many fields such as natural language understanding, coding, mobile path prediction and so on to make prediction and then control. But the model has to face the problem of state space expansion. Taking the mobile path prediction as the research background, the paper firstly proposes a step-k Markov model and validates its feasibility. Secondly, a hybrid Markov predictor model is put forward based on the step-k Markov model. The complexity of the hybrid Markov model is O(N) while the order-k Markov model is O(N 2 ). And the memory demand of the hybrid Markov model is O(N 2 ) while order-k Markov model is O(N 3 ). Finally, it is proved that the hybrid Markov predictor can get close performance with order-k Markov predictor at much lower expense by conditional entropy analysis and user mobility data analysis. Also it can alleviate the zero probability problem in order-k Markov model to some extent. The hybrid Markov predictor is more practical than order-k Markov predictor under WLAN

关键词： Predictive models State-space methods Entropy Mobile computing Wireless LAN Natural languages Accuracy Wireless networks Educational institutions Equations

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Operational semantics of the seal calculus

Operational semantics of the seal calculus

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4th IFIP TCI2 International Conference on Intelligent Information Processing, IIP 2006

作者： Jing, Zhang Li-Cui, Zhang De-Gui, Guo College of Computer Science and Technology Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education of China Jilin University Changchun 130012 China College of Communication Engineering Jilin University Changchun 130012 China

ISBN: (纸本)9780387446394

As a distributed process calculus with localities and mobility of computational entities, Seal calculus is playing an important role in expressing key features such as security and mobility of Internet programming directly. However, little implementation technique proposed for the calculus, partly due to the complication of inobile computation, which fusions three important techniques: concurrency, distribution and mobility at the same time. The abstract machine PSN for a distributed implementation of the Seal calculus is presented. In PSN the logical structure of a seal system and its physical distribution are separated which induces a more simple and clear implementation. Moreover, an operational semantics description of the Seal calculus based on PSN is given.

关键词： Calculations

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Distance ratio fractal for complex mapping z ← zα

Distance ratio fractal for complex mapping z ← zα

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First International Multi- Symposiums on Computer and computational Sciences, IMSCCS'06

作者： Zhang, Xizhe Lv, Tianyang Huang, Shaobin Wang, Zhengxuan Key Laboratory of Symbolic Computing and Knowledge Engineering Jilin University Ministry of Education Changchun China College of Computer Science and Technology Harbin Engineering University Harbin China

ISBN: (纸本)0769525814

The complex mapping z ← zα is important in dynamical application, but it is not received as much attention in the literature as the mapping z ← zα+c, for there is not fractal structure by using escape time algorithm. This paper utilizes a new method named as distance ratio iteration method and discusses the iteration properties of the complex mapping z ← zα. The distance ratio iteration method can render the convergence region of the mapping, so the image has complex and self-similarity structure. This paper generates fractal image using distance ratio iteration method for various exponents of z ← zα and discusses their visual properties. There is rich detail fractal structure in the mapping z ← zα. © 2006 IEEE.

关键词： Fractals

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Modeling and refining directional relations based on fuzzy mathematical morphology

Modeling and refining directional relations based on fuzzy m...

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High-Power Diode Laser Technology and Applications IV

作者： Sun, Haibin Li, Wenhui Key Laboratory of Symbol Computation Knowledge Engineering of the Ministry of Education College of Computer Science and Technology Jilin University Changchun 130012 China

ISBN: (纸本)0819461466

In this paper, we investigate the deficiency of Goyal and Egenhofer's method for modeling cardinal directional relations between simple regions and provide the computational model based on the concept of mathematical morphology, which can be a complement and refinement of Goyal and Egenhofer's model for crisp regions. Based on fuzzy set theory, we extend Goyal and Egenhofer's model to handle fuzziness and provide a computational model based on alpha-morphology, which combines fuzzy set theory and mathematical morphology, to refine the fuzzy cardinal directional relations. Then the computational problems are investigated. We also give an example of spatial configuration in 2-dimensional discrete space. The experiment results confirm the cognitive plausibility of our computational models. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Fuzzy sets

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Some problems on multivariate rational interpolation

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Journal of Information and computational Science 2006年第3期3卷 453-461页

作者： Lei, Na Liu, Tingzhan Zhang, Shugong Feng, Guochen Key Laboratory of Symbolic Computation and Knowledge Engineering Institute of Mathematics Jilin Univ. Changchun 130012 China Key Laboratory of Mathematics Mechanization CAS Beijing 100080 China

This paper deals with minimal multivariate rational interpolation. We discuss how to choose the minimal interpolation bases for given interpolation nodes, give out the existence conditions of the multivariate rational interpolation function and construct the relative rational function as it exists. Furthermore, we point out that for pairwise different interpolation nodes the multivariate rational interpolation function exists for almost all interpolation data.

关键词： Interpolation

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SLNN: A Neural Network for Fuzzy Neural Network's Structure Learning

SLNN: A Neural Network for Fuzzy Neural Network's Structure ...

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International Conference on Intelligent Systems Design and Applications (ISDA)

作者： Daxin Tian Yanheng Liu Jian Wang College of Computer Science and Technology Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University China

A novel structure learning algorithm for fuzzy neural networks (SLNN) is presented in this paper. The neurons of SLNN are created and adapted as online learning proceeds. The learning rule of SLNN is based on Hebbian learning and a kernel winner-take-all algorithm - KWTA. KWTA not only can let SLNN be able to learn from new data but also can prevent losing the knowledge which has been learned earlier. To obtain a concise fuzzy rule, a pruning algorithm is adopted in SLNN which doesn't disobey the basic design philosophy of fuzzy system. Simulations are performed on the primary benchmark: circle-in-the-square. Comparison with ARTMAP and BP neural network indicates that better performance is achieved

关键词： Neural networks Fuzzy neural networks Fuzzy systems Clustering algorithms Signal processing algorithms Computer networks Neurons Partitioning algorithms Learning Fuzzy control

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Research of Mobile IPv6 Application Based On Diameter Protocol

Research of Mobile IPv6 Application Based On Diameter Protoc...

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International Multi-Symposiums on Computer and computational Sciences (IMSCCS)

作者： Da Wei Yanheng Liu Xuegang Yu Xiaodong Li College of Computer Science and Technology Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University China

The diameter protocol is recommended by IETF as AAA (authentication, authorization and accounting) protocol criterion for the next generation network. Because the IPv6 protocol will be widely applied in the intending all-IP network, mobile IPv6 application based on diameter protocol will play more important role in authentication, authorization and accounting. In this paper, the implementation of mobile node's authentication and authorization is presented with PANA (protocol for carrying authentication for network access) protocol. It is based on diameter protocol for the application expansion of mobile IPv6, which provides the supports to the basic AAA process of mobile IPv6 nodes and dynamic home agent distribution in the visited network and the secret key distribution. Finally, the correctness of this application expansion is testified with developing the design of protocol based on opendiameter

关键词： Access protocols Authentication Cryptographic protocols Authorization Network servers Application software IP networks Peer to peer computing Transport protocols Computer science

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