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Encoding hypergraphs into quantum states

Physical Review A 2013年第2期87卷 022311-022311页

作者： Ri Qu Juan Wang Zong-shang Li Yan-ru Bao []School of Computer Science & Technology Tianjin University Tianjin 300072 China and Tianjin Key Laboratory of Cognitive Computing and Application Tianjin 300072 China

Ionicioiu and Spiller [Phys. Rev. A 85, 062313 (2012)] have recently presented an axiomatic framework for mapping graphs to quantum states of a suitable physical system. Based on their study, we first extend the axiomatic framework to hypergraphs by means of modifying its axioms and consistency conditions. Then we use the axiomatic approach to encode hypergraphs into a different family of quantum states, called the hypergraph states. Moreover, we also try to do the following: (i) show that real equally weighted states, which occur in Grover and Deutsch-Jozsa algorithms, are equivalent to hypergraph states; (ii) describe the relations among hypergraph states, graph states, and stabilizer states; (iii) provide some transformation rules, stated in purely hypergraph theoretical terms, which completely characterize the evolution of hypergraph states under some local operations, including operators in the Pauli group and some special local Pauli measurements; and (iv) investigate some properties of multipartite entanglement of hypergraph states by hypergraph theory.

关键词： HYPERGRAPHS QUANTUM theory ALGORITHMS PHYSICS THERMODYNAMICS

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Relationship among locally maximally entangleable states, W states, and hypergraph states under local unitary transformations

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Physical Review A 2013年第5期87卷 052331-052331页

作者： Ri Qu Yi-ping Ma Bo Wang Yan-ru Bao []School of Computer Science and Technology Tianjin University Tianjin 300072 China and Tianjin Key Laboratory of Cognitive Computing and Application Tianjin 300072 China

Kruszynska and Kraus [Phys. Rev. A 79, 052304 (2009)] have recently introduced the so-called locally maximally entangleable (LME) states of n qubits which can be maximally entangled with local auxiliary qubits using controlled operations. We characterize the local entangleability of hypergraph states and W states using the approach of Kruszynska and Kraus. We show that (i) all hypergraph states are LME; (ii) hypergraph states and LME states are not equivalent under local unitaries; (iii) a W state of n qubits is not LME; and (iv) no hypergraph state of n qubits can be converted into the W state under local unitary transformations. Moreover, we also present an approach for encoding weighted hypergraphs into LME states.

关键词： QUANTUM entanglement QUBITS UNITARY transformations HYPERGRAPHS QUANTUM states NUCLEAR physics

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Individual variation of morphological and acoustic effects of the nasal tract

Individual variation of morphological and acoustic effects o...

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2013 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2013

作者： Zhao, Chen Dang, Jianwu Wang, Yuguang Wei, Jianguo Honda, Kiyoshi School of Computer Science and Technology Tianjin University 92 Weijin Road Nankai District Tianjin 300072 China School of Information Science Japan Advanced Institute of Science and Technology 1-1 Asahidai Nomi Ishikawa 923-1292 Japan Tianjin Key Laboratory of Cognitive Computing and Application China

ISBN: (纸本)9781479910434

Previous studies have reported that nasal consonants in Mandarin are an important source of individual information. This study conducts morphological analysis and acoustic modeling of the nasal and paranasal cavities to investigate the effects of the nasal cavity on speaker characteristics. Morphological analysis was carried out on the perpendicular planes to the nasal tract and the cross-sectional area functions of the nasal tract based on volumetric MRI data obtained for four Chinese speakers. It was shown that the nasal cavity possesses relatively large variation across speakers. Furthermore, acoustic effects of the individual variation of the nasal cavity were estimated by using a transmission line model. The results showed that the interspeaker variation of the nasal tract affects spectra in the frequency range from 2 kHz to 4 kHz, which is in agreement with the results from our previous statistical studies. © 2013 IEEE.

关键词： Morphology

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A new method for the objective perceptual measurement of Chinese initials

A new method for the objective perceptual measurement of Chi...

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Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA)

作者： Sai Chen Hongcui Wang Jia Jia Jianwu Dang Tianjin Key Laboratory of Cognitive Computing and Application Tianjin University China Department of Computer Science and Technology Tsinghua University China

Many works have been done in the methods of the perception measurements for speech sound. However, most of them are subjective measurement alone for perception aspects. In this paper, we try to give a new method of objective perception measurement for Chinese initials and investigate the relationship between the acoustic features and the perception measurement. To do so, we discuss which acoustic features and their combinations are the most consistent with the real perception of Chinese initials. We propose a method to obtain an objective perception measure based on the acoustic features, where the acoustic distance has a monotonic relation with the perceptual distance for Chinese initials. The Spearman's rank correlation coefficient is enhanced from 0.6328 to 0.6498 by adding the time-domain features to the feature vector of each initial. Finally, we propose a new formula to measure the perceptual distance between different types of initials objectively by using the chosen acoustic features.

关键词： Acoustic measurements Time-domain analysis Speech Educational institutions Mel frequency cepstral coefficient

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Efficient data-intensive processing in cloud computing environment

Efficient data-intensive processing in cloud computing envir...

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2013 International Conference on Communication technology (ICCT 2013)

作者： Jiaman Ding Yi Du Qingxin Wang Ying Jiang Yunnan Provincial Key Laboratory of Computer Technology Application Faculty of Information Engineering and AutomationKunming University of Science and Technology City College Kunming University of Science and Technology

In order to solve the efficiency problem about the data-intensive query join in cloud computing environment, a Shrink-Semis Join for Cloud Computing(SSJFCC) method for data-intensive was proposed. This paper firstly analyzed and compared the bottlenecks of existing query join algorithm in the cloud computing environment. Secondly, aiming to shrink semi-results data from join process, five algorithms of SSJFCC method were designed. Finally, the improvement method had been implemented based on Hadoop framework. Experiments show that this method significantly reduced the network transmission data quantity and join computing time-consuming, and improved the data-intensive query efficiency.

关键词： data-intensive cloud computing query join map reduce

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A noise-insensitive algorithm for pixel level image registration based on centroid

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2012 International Conference on Information technology and Software Engineering, ITSE 2012

作者： Feng, Song Deng, Linhua Lin, Jiaben Deng, Hui Ji, Kaifan Computer Technology Application Key Lab. of Yunnan Province Kunming University of Science and Technology 650500 Chenggong Kunming China Key Laboratory of Solar Activity National Astronomical Observatories Chinese Academy of Sciences 100012 Beijing China National Astronomical Observatories/Yunnan Astronomical Observatory Chinese Academy of Sciences 650011 Kunming China Graduate University Chinese Academy of Sciences 100049 Beijing China

ISBN: (纸本)9783642345302

Pixel level displacement measurement is the first stage of Coarse-to-Fine approach in high-accuracy image registration. However, the measurement accuracies of well-known techniques drop sharply with increasing of the image noise. We present a noise-insensitive pixel level registration algorithm, which is based on estimating the centroid of cross correlation surface with modified moment method, for low quality images. The experiment of eight standard testing images shows that our proposed algorithm could decrease the minimum requirement of PSNR for pixel level registration, and determine some image displacements which might not be handled by traditional methods. © 2013 Springer-Verlag.

关键词： Image registration

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A Scalable RNS Montgomery Multiplier over IF2m

A Scalable RNS Montgomery Multiplier over IF2m

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中国密码学会2013年密码芯片学术会议

作者： Jingwei Hu Jizeng Wei Wei Guo Ray C.C.Cheung School of Computer Science and Technology Tianjin University School of Computer Science and Technology Tianjin University Tianjin Key laboratory of Cognitive Computing and Application Department of Electronic Engineering City University of Hong Kong

This paper presents a fully parallelized and scalable RNS Montgomery multiplier over binary *** generalizing the RNS Montgomery Multiplication (RNS MM) and pseudo-Mersenne-like numbers, we are able to obtain a considerably high speed in our FPGA implementation experiments with acceptable circuit area and modest critical path ***, this design can be easily scalable by adjusting a variety of field sizes and field polynomials.

关键词： RNS MM Binary Field FPGA Scalable

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Optimization of MCMC sampling algorithm for the calculation of PAC-Bayes bound

Optimization of MCMC sampling algorithm for the calculation ...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Li Tang Zheng Zhao Xiu-Jun Gong Hua-Peng Zeng Department of Information Science and Technology Tianjin University of Finance and Economics Tianjin China School of Computer Science and Technology Tianjin University Tianjin China Tianjin Key Laboratory of Cognitive Computing and Application Tianjin China Danfoss (Tianjin) Ltd. Tianjin China

ISBN: (纸本)9781479902590

PAC-Bayes bound provides a formal framework for deducing the tightest risk bounds of the classifiers. After formulating the concept space as a Reproducing Kernel Hilbert Space (RKHS), the Markov Chain Monte Carlo (MCMC) sampling algorithm for simulating posterior distributions of the concept space can realize the calculation of PAC-Bayes bound. A major issue is the computational complexity in geometric growth when the dimension of concept space increases. In this paper, we store a portion of the sampling data and calculate its variance, after which the variance minimization method is proposed to investigate the support vectors. Finally, we optimize the support vectors coupled with their weight vectors, and compare the PAC-Bayes bounds. The experimental results of our artificial data sets in low-dimensional spaces show that the optimization is reasonable and effective in practice.

关键词： Optimization Abstracts Monte Carlo methods Erbium Support vector machines

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Adhesion hysteresis of a film-terminated fibrillar array

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Science China(Physics,Mechanics & Astronomy) 2012年第6期55卷 1026-1031页

作者： YAN ShunPing HE LingHui WANG HuiJing Chinese Academy of Sciences Key Laboratory of Mechanical Behavior and Design of Materials University of Science and Technology of ChinaHefei 230026China Department of Computer Application Shenzhen Institute of lnforrnation TechnologyShenzhen 518172China

Motivated by the recent biomimic design of microstructured adhesive surfaces,we study adhesion between a film-terminated fibrillar array and a rigid *** a two-dimensional model and ignoring the deformation of the fibers and the backing layer,we show that the adhesion behavior is dominated by a dimensionless parameter reflecting the global flexibility of the terminal *** particular,if the parameter is larger than 0.4,the adhesion is reversible;otherwise one or more hysteresis loops will appear after an approach-retraction cycle,leading to significant increase in the specific separation *** result is expected to help not only optimal design of the structure,but also other applications such as micro-manipulation in micromechanical systems.

关键词： adhesion hysteresis film-terminated fibrillar array intermolecular force

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Analysis of the Geometrical Features of Photospheric Bright Points in the Quiet-Sun Region

Analysis of the Geometrical Features of Photospheric Bright ...

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第三十二届中国控制会议

作者： Lan Yu Linhua Deng Song Feng Department of Information Engineering Yunnan Land and Resources Vocation College Key Laboratory of Modern Astronomy and Astrophysics(Nanjing University) Ministry of Education National Astronomical Observatories/ Yunnan Astronomical Observatory Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Computer Technology Application Key Lab of Yunnan Province and Faculty of Information Engineering and Automation Kunming University of Science and Technology

ISBN: (纸本)9781479900305

The Solar Granulation is an ubiquitous structure in the quiet *** brighter features called "Photospheric Bright Points(PBPs)" are found within inter-granules in G-band images *** are the small-scale feature on the solar *** their characteristics may reveal the significant problems such as coronal hearting,local dynamo theory and the relation of magnetic *** the presented paper,we utilized Laplacian and morphological dilation(LMD) technique to detect and extract PBPs within inter-granular lanes.A data set has been taken with the Dutch Open Telescope(DOT) on July 2, *** was employed to analyze the geometrical feature of *** statistical distributions of PBPs were obtained by the proposed *** diameter distribution of PBPs is consistent with lognormal *** peak diameter occurs at about *** histogram of geometrical features is derived from the PBPs *** distribution of eccentricity indicates that approximately 50%PBPs have a near circular,the average eccentricity occurs at *** distribution accords with an Exponential fit.

关键词： Photospheric Bright Points Laplacian morphological dilation eccentricity Sun

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