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Quantum State Reduction for Universal Measurement Based Computation

Physical Review Letters 2010年第2期105卷 020502-020502页

作者： Xie Chen Runyao Duan Zhengfeng Ji Bei Zeng Department of Physics Massachusetts Institute of Technology Cambridge Massachusetts USA Centre for Quantum Computation and Intelligent Systems (QCIS) Faculty of Engineering and Information Technology University of Technology Sydney NSW Australia Department of Computer Science and Technology Tsinghua National Laboratory for Information Science and Technology Tsinghua University Beijing China Perimeter Institute for Theoretical Physics Waterloo Ontario Canada State Key Laboratory of Computer Science Institute of Software Chinese Academy of Sciences Beijing China Institute for Quantum Computing University of Waterloo Waterloo Ontario Canada Department of Combinatorics and Optimization University of Waterloo Waterloo Ontario Canada

Measurement based quantum computation, which requires only single particle measurements on a universal resource state to achieve the full power of quantum computing, has been recognized as one of the most promising models for the physical realization of quantum computers. Despite considerable progress in the past decade, it remains a great challenge to search for new universal resource states with naturally occurring Hamiltonians and to better understand the entanglement structure of these kinds of states. Here we show that most of the resource states currently known can be reduced to the cluster state, the first known universal resource state, via adaptive local measurements at a constant cost. This new quantum state reduction scheme provides simpler proofs of universality of resource states and opens up plenty of space to the search of new resource states.

关键词： Quantum computers

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Multi-error-correcting amplitude damping codes

Multi-error-correcting amplitude damping codes

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IEEE International Symposium on Information Theory

作者： Runyao Duan Markus Grassl Zhengfeng Ji Bei Zeng State Key Laboratory of Intelligent Technology and Systems Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and Technology Tsinghua University Beijing China Centre for Quantum Computation and Intelligent Systems (QCIS) Faculty of Engineering and Information Technology University of Technology Sydney NSW Australia Centre for Quantum Technologies National University of Singapore Singapore Perimeter Institute of Theoretical Physics Waterloo ONT Canada State Key Laboratory of Computer Science Institute of Software Chinese Academy and Sciences Beijing China Institute for Quantum Computing and the Department of Combinatorics and Optimization University of Waterloo Waterloo ONT Canada

ISBN: (纸本)9781424478903

We construct new families of multi-error-correcting quantum codes for the amplitude damping channel. Our key observation is that, with proper encoding, two uses of the amplitude damping channel simulate a quantum erasure channel. This allows us to use concatenated codes with quantum erasure-correcting codes as outer codes for correcting multiple amplitude damping errors. Our new codes are degenerate stabilizer codes and have parameters which are better than the amplitude damping codes obtained by any previously known construction.

关键词： Damping Quantum mechanics Quantum computing Error correction codes Noise level Laboratories Phase noise Physics computing Intelligent systems computer science

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Machinery maintenance scheduler system

Machinery maintenance scheduler system

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作者： Zainuddin, Fauziah Sidek, Roslina Mohd Ali, Noorlin Mohd Rahim, Mohd Hafizul Mat Faculty of Computer Systems and Software Engineering Universiti Malaysia Pahang 25000 Kuantant Pahang Malaysia

ISBN: (纸本)9780791802977

The aim of this study is to develop a prototype of web based machinery maintenance scheduling system. Maintenance is an important task in remaining the system functionality and to extend the life time of an asset. However, a weak maintenance management and practice may leads to the major system failure which involved high maintenance cost. This paper describes an initial attempt of developing e-maintenance application - Web Based Machinery Maintenance Scheduler System (MMS). MMS is developed to manage the maintenance scheduling of all machines operated in Mechanical engineering Laboratory. Based on the study, the prototype is able to generate maintenance scheduling for each machines based on the machine maintenance specification, record the data for the emergency maintenance case and generate the monthly maintenance report. The detail outcomes and the results from the study are discussed in this paper.

关键词： Preventive maintenance

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Investigating Security Threats in Information systems

Investigating Security Threats in Information Systems

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12th International-Business-Information-Management-Association Conference

作者： Samy, Ganthan Narayana Ahmad, Rabiah Ismail, Zuraini Department of Computer Systems and Communications Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia (UTM) Malaysia Centre for Advanced Software Engineering (CASE) Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia (UTM) Malaysia Department of Science College of Science and Technology Universiti Teknologi Malaysia (UTM) Malaysia

ISBN: (纸本)9780982148914

Information security surveys are important inputs to private, public and government sectors in order to measure current status of information security threats. This paper examines the various types of threats that exist in Information systems (IS) in one of government supported hospital in Malaysia. The hospital has been equipped for a Total Hospital Information System (THIS). The data collected were from three different departments using in-depth structured interviews. The study identified 22 types of threats according to major threat categories based on ISO/IEC 27002 (ISO 27799:2008). The result shows that the most critical threat for the THIS is the power failure followed by acts of human error or failure and other technological factors. This research holds significant value in terms of providing a comprehensive list of potential threat categories in IS and subsequently taking the results of this step as input for the risk mitigation strategy. Keywords: Healthcare Information systems (HIS), Information systems (IS), Risk Analysis, Threats

关键词： Healthcare Information systems (HIS) Information systems (IS) Risk Analysis Threats

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Problem-based learning in teaching formal specification

Problem-based learning in teaching formal specification

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作者： Roslina, M.S. Faculty of Computer Systems and Software Engineering Universiti Malaysia Pahang MEC City 26300Gambang Kuantan Pahang Malaysia

ISBN: (纸本)9780791802977

Learning process is very important in academic industry. Students are the person that will give their service to the country after they graduated. As an academician, lecturer responsible in making sure their students are having skills that needed by industry. The industry in Malaysia always complaint that Malaysian student are having no skill. So, with this problem, we applied problem-based learning method to make our students can solve whatever problem given by superior, critical thinking in solving the problem, can work independence and minimized supervision and others. The PBL method was introduced to the faculty of computer systems and software engineering (FSKKP) second year students in the Bachelor of software engineering. The subject is Formal Methods 3 credit hours. The number of students is 88. We analyzed 88 students' assignment to see their performance of construction of formal specification. Using this method help student in gain skill that required by the industry at the same time to construct formal specifications. This approach can train our student more critical thinking, independent, confidence, developed team working and others.

关键词： Students

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Particle swarm optimization for gene selection in classifying cancer classes

Particle swarm optimization for gene selection in classifyin...

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作者： Mohamad, M.S. Omatu, S. Deris, S. Yoshioka, M. Department of Computer Science and Intelligent Systems Graduate School of Engineering Osaka Prefecture University Sakai Osaka 599-8531 Japan Department of Software Engineering Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia 81310 Skudai Johore Malaysia

ISBN: (纸本)9784990288037

The application of microarray data for cancer classification has recently gained in popularity. The main problem that needs to be addressed is the selection of a smaller subset of genes from the thousands of genes in the data that contributes to a disease. This selection process is difficult due to the availability of a small number of samples compared to the huge number of genes, many irrelevant genes, and noisy genes. Therefore, this paper proposes an improved binary particle swarm optimization to select a near-optimal (smaller) subset of informative genes that is relevant for cancer classification. Experimental results show that the performance of the proposed method is superior to the experimental method and other related previous works in terms of classification accuracy and the number of selected genes. ©ISAROB 2009.

关键词： Genes

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Gene subset selection using an iterative approach based on genetic algorithms

Gene subset selection using an iterative approach based on g...

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ISBN: (纸本)9784990288037

Microarray data are expected to be useful for cancer classification. The main problem that needs to be addressed is the selection of a smaller subset of genes from the thousands of genes in the data that contributes to a disease. This selection process is difficult due to many irrelevant genes, noisy genes, and the availability of a small number of samples compared to a huge number of genes (higher-dimensional data). Hence, this paper aims to select a near-optimal (smaller) subset of informative genes that is most relevant for the cancer classification. To achieve the aim, an iterative approach based on genetic algorithms has been proposed. Experimental results show that the performance of the proposed approach is superior to other related previous works as well as four methods experimented in this work. In addition a list of informative genes in the best gene subsets is also presented for biological usage. ©ISAROB 2009.

关键词： Genes

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Newspaper Vendor Sales Prediction Using Artificial Neural Networks

Newspaper Vendor Sales Prediction Using Artificial Neural Ne...

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International Conference on Education Technology and computer, ICETC

作者： Abdul Sahli Fakharudin Mohd Azwan Mohamad Mohd Usaid Johan Faculty of Computer Systems & Software Engineering Universiti Malaysia Pahang Pahang Malaysia

Every newspaper publisher faced with the problem of determining the number of copies of newspaper and distributing them to the retail traders. Two aspects need to be balanced out in order to optimize the economical success which is the number of unsold copies should be minimal to reduce the cost of production, and the sell-out rate should be minimal to maximize the number of sold copies. Thus, a good sales rate prediction is necessary to optimize both antagonistic aspects. This paper utilized artificial neural network to predict newspaper sales for one vendor in the area of Sungai Petani, Malaysia. The predicted sales value can help the company to optimize their sales. The main objective is to develop a prototype that apply artificial neural network so that it can predict the future trend as well as the future daily sale. The network will consist of three layer which is input layer, one hidden layer and output layer. The input layer will have six input node where this will be the factor that will affect the output which is the number of copies that sold. The network will be trained with history data of a one year records of data. The output produced has the error value as low as 1.24% while the correlation coefficient between prediction and actual value is 0.1197.

关键词： Marketing and sales Artificial neural networks computer networks Distributed computing Economic forecasting Cost function Production computer science education systems engineering education Educational technology

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An Analysis of Network Services Using Association Rules

An Analysis of Network Services Using Association Rules

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2009 2nd IEEE International Conference on computer Science and Information Technology（ICCSIT 2009）

作者： M.N.Noorhuzaimi S.Junaida R.Mohamad Mazrul Faculty of Computer Systems & Software Engineering Universiti Malaysia Pahang KuantanPahang

Log server is significant for every organization *** generates huge amount of data every day and of different *** data holds valuable information which is complex to be interpreted unless with the aid of web log analysis *** rules is a data mining technique which is able to derived patterns from data in log server *** paper presents the analysis of log server data particularly on the usage of network *** Appriori algorithm is implemented in the pattern discovery and a tool named UMPNA assist in the process of derive the *** results from the analysis can help network administrator increase the network performance.

关键词： Log server file,Association rule,Appriori Algorithm

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Deriving Formal Specification Using Z Notation

Deriving Formal Specification Using Z Notation

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International Conference on computer Technology and Development (ICCTD)

作者： Roslina Mohd Sidek Noraziah Ahmad Faculty of Computer Systems & Software Engineering Universiti Malaysia Pahang Kuantan Pahang Malaysia

Formal Methods are very tough subject to software engineering student. It happens because of the mathematics involvement during software development. Students normally feel very difficult to derive formal specification from informal requirement. The problem always happen is to derive the Z notation in the formal specification. The formal specification is all about the operation inside the requirement needed from the customer using mathematical statement. If there do not know the logic of the operation the notation might goes wrong. In this paper, we propose an approach to deriving formal specifications from informal requirement using Venn diagram for creating formal specification in term of training environment to make our student understand. The Venn diagram that we use is purposely for the basic level. It is used to visualize in the branch of mathematics known as set theory. It shows all of the possible mathematical or logical relationships between sets groups of things. With this Venn diagram they can visualize the operation of their notation. To show how to implement the Venn diagram we chose a case study. We show how to convert the Venn diagram to formal specification which is the important part during development of Z schema. Then, we do an analysis of an assignment given to a group of student to know whether the Venn diagram is really helpful for them or not.

关键词： Formal specifications software engineering Visualization Mathematics Programming Set theory software systems Health and safety Automatic logic units

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