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Towards making better hybrid pattern classification design for speaker identification

Towards making better hybrid pattern classification design f...

引用

International Conference on Electronic Design (ICED)

作者： Loh Mun Yee Abdul Manan Ahmad Cheang Soo Yee Department of Software Engineering Faculty Computer Science and Information System Universiti Teknologi Malaysia Johor Malaysia

Recent development on classify speaker data from a group of speaker is still insufficient to provide a satisfied result in achieving high performance pattern classification engine. There are two main difficulties in this field: how to maintain accuracy rate under incremental amounts of training data and how to reduce the time processing in the case embedded systems need to consider about efficient and simplicity of calculation. Recently we have proposed three difference hybrid pattern classification approach for text independent speaker identification system; in these approaches, we combined a hybrid GMM/VQ and decision Tree model. In this paper, we extend our investigations in order to select the most suitable hybrid GMM/VQ+DT model for real time application. For the first proposed hybrid modeling, both VQ model and GMM model will run parallel after signal preprocessing process; while the second type of proposed hybrid modeling, we present the use of decision tree in VQ techniques. The third method are extended from the second hybrid modeling which is using VQ decision rules for Gaussian mixture modeling in order to simplified the process. Experimental result shows that the third type of hybrid modeling should be considered for real world application due to the superior performance of time processing.

关键词： Pattern classification Speaker recognition Embedded system Training data Decision trees Speech processing Hidden Markov models Engines Signal processing Robotics and automation

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3CI: A Tool for Crosscutting Concern Identification

3CI: A Tool for Crosscutting Concern Identification

引用

International Conference on Computational Intelligence for Modelling, Control and Automation, and International Conference on Intelligent Agents, Web Technologies and Internet Commerce

作者： Busyairah Syd Ali Zarinah Mohd. Kasirun Department of Software Engineering Faculty of Computer Science & Information Technology University of Malaya Kuala Lumpur Malaysia

Certain requirements in requirements document are scattered and tangled. Often software developers neglect these requirements during implementation or repeat the same functionality throughout the codes. These requirements are called crosscutting concerns. Identifying and analyzing these concerns manually is a hassle due to its ambiguous characteristics and massive volume of requirement sources. Aspect-oriented requirements engineering (AORE) supports crosscutting concern identification at various software development phases. However it is crucial at the requirements level; to avoid coupling between requirements, improve traceability among requirements, eases function modularization, reduce software complexity, enhance correctness of the software design, and most importantly it saves the cost. Many techniques have been developed for crosscutting concern identification at the requirements level such as Theme/Doc and Early Aspects. However all of these techniques in the existing studies are only supported by semi-automated tool whereby human intervention is required to achieve the desired results. In this paper, we describe a tool, 3CI that automatically identifies crosscutting concern as well as their crosscutting relationships at the requirement level. The tool utilizes NLP techniques to extract linguistic properties in each unique requirement and exploits these properties to identify crosscutting concerns and its influences in a requirements document. NLP techniques such as part-of-speech analysis, word frequency analysis and dominant verb analysis contribute in the processing of requirements phrases to assist aspects mining.

关键词： Programming Speech analysis Humans Frequency software engineering computer science Information technology Scattering software design Cost function

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A Review on Approaches for Identifying Crosscutting Concerns

A Review on Approaches for Identifying Crosscutting Concerns

引用

International Conference on Advanced computer Theory and engineering, ICACTE

作者： Busyairah Syd Ali Zarinah Mohd. Kasirun Department of Software Engineering Faculty of Computer Science & Information Technology University of Malaya Kuala Lumpur Malaysia

Brito argued that there are certain properties that the existing software development approaches are not able to modularize. Brito claimed, these properties cut across a large number of artefacts that compose the system. Therefore it is difficult to modularise them in separate modules. These properties are known as cross cutting concerns, which is encapsulated into aspect. Rosenhainer defined aspects as modular artefacts that encapsulate crosscutting concerns. Aspect-oriented requirements engineering shows encouraging results in improving, identification, modularization and composition of crosscutting concerns. For instance, many techniques have been developed for crosscutting concern identification activity. This crucial activity is useful at the requirements level. It avoids coupling between requirements, improves traceability among requirements, eases function modularization, reduces software complexity, enhances the correctness of the software design, and most importantly it saves the cost. Although the research area is still in its infancy, several techniques for crosscutting concern identification have already been developed. However, all of the techniques reviewed are based on semi-automated way. Human intervention is required to achieve the desired results using these techniques. Therefore this paper reviews the existing approaches on its effectiveness to solve this issue.

关键词： Text analysis Scattering Shape software engineering computer science Information technology Programming software design Cost function Humans

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Focus Group Discussion Model for Requirements Elicitation Activity

Focus Group Discussion Model for Requirements Elicitation Ac...

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International Conference on computer and Electrical engineering, ICCEE

作者： Zarinah Mohd Kasirun Siti Salwah Salim Department of Software Engineering Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur Malaysia

Reviewing existing requirements elicitation models lead to the identification of an environment, detailed activities and tool support are very significant in understanding requirements elicitation activity. The environment ensures involvement from all stakeholders during the requirements elicitation activity in one platform, while the activities are steps that are very important in achieving the goal of requirements elicitation. The support component employs suitable technique that provides platform to groups of stakeholders to participate in requirements elicitation. Emphasizing these three components, in which focus group discussion for requirements elicitation (FGDRE) gives an understanding about the requirements elicitation activity and recommends essential requirements for requirements elicitation tool.

关键词： Courseware software engineering Application software Documentation computer science Information technology Graphics Electronic mail Guidelines Educational institutions

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Improved robust 𝒟𝒰-stability measures via S-procedure

Improved robust 𝒟𝒰-stability measures via S-procedure

引用

American Control Conference (ACC)

作者： Bilal Sari Olivier Bachelier Driss Mehdi Toufic Al Chaer Languages Informatics Systems and Software Engineering Department Faculty of Computer Science University of Poitiers Poitiers France

In this paper we focus on the notion of robust matrix root-clustering analysis in a union of regions that are possibly disjoint and non symmetric. Indeed this work aims at computing a bound on the size of the uncertainty domain preserving matrix D u -stability. A Linear Fractional Transform (LFT) uncertainty is considered. To reduce conservatism, a new approach, based on some generalized S-procedure, is addressed. In the case where the studied matrices depend afflnely on the uncertain parameters or when the studied matrices are subject to polytopic uncertainty, it is known that recently developed L.M.J conditions are effective to assess the robust performance in a less conservative fashion. This paper further extends the preceding results and propose a unified way to obtain new L.M.J conditions even in the case of rational parameter dependence. Some conservatism induced by some techniques encountered in the literature is here reduced .

关键词： Robustness Uncertainty Lyapunov method Robust control Symmetric matrices Robust stability Control system synthesis Control system analysis Control systems Uncertain systems

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Semantic Web Service Discovery and Composition Based on AI Planning and Web Service Modeling Ontology

Semantic Web Service Discovery and Composition Based on AI P...

引用

IEEE Asia-Pacific Conference on Services Computing (APSCC)

作者： Sayed Gholam Hassan Tabatabaei Wan Mohd Nasir Wan Kadir Suhaimi Ibrahim Department of Software Engineering Faculty of Computer Science and Information Systems University of Technology Skudai Johor Malaysia

Web services are the preferred standards-based way to realize service oriented architecture (SOA) computing. A problem that has become one of the recent critical issues is automated composition of Web services. A number of approaches have been proposed to resolve the problem. However, discovery and composition of Web services have been neglected by majority of those approaches. In this paper, we propose an approach called AIMO, based on AI-planning and Web service modeling ontology (WSMO), which are adapted and extended to tackle the mentioned problem. Moreover, we propose a translator to provide interaction between WSMO and AI-planning. We start with presenting the AIMO architecture which shows all components of the proposed approach. Finally, a simple case study is designed to test some components of AIMO. The preliminary results of the test demonstrate that our approach provides an applicable solution.

关键词： Semantic Web Artificial intelligence Web services Ontologies Service oriented architecture Testing Process planning software systems XML software engineering

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An evaluation of current approaches for Web service composition

An evaluation of current approaches for Web service composit...

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International Symposium on Information Technology, ITSim

Since many organizations recently decide to implement and publish their applications over Internet, the number of Web services has dramatically increased. In many cases, a single service is not sufficient to respond to the user’s request. In order to tackle this problem, services have to be combined together. Therefore, composition of Web services is one of the recent critical issues. Several approaches have been presented, to tackle this problem. In this paper, we classify these approaches into four categories namely Workflow-based, AI-planning based, Syntactic-based, and Ontology-based. Then, we describe and compare these approaches using some criteria (like QoS, scalability, and correctness). The overall results indicate that some AI-planning and Ontology based approaches like HTN-DL and WSMO satisfy most of the criteria.

关键词： Web services Planning Ontologies Calculus OWL Semantic web Protocols

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Developing tool for crosscutting concern identification using NLP

Developing tool for crosscutting concern identification usin...

引用

International Symposium on Information Technology, ITSim

作者： Busyairah Syd Ali Zarinah Mohd. Kasirun Department of Software Engineering Faculty of Computer Science & Information Technology University of Malaya Kuala Lumpur Malaysia

Aspect-oriented requirements engineering shows encouraging results in improving, identification, modularization and composition of crosscutting concerns. For instance, many techniques have been developed for crosscutting concern identification activity. This crucial activity is useful at the requirements level; it avoids coupling between requirements, improves traceability among requirements, eases function modularization, reduces software complexity, enhances the correctness of the software design, and most importantly it saves the cost. However, existing studies do not provide us with a clear definition of the term crosscutting concern and aspect. In terms of tools, most of these techniques in the existing studies are only supported by semi-automated tool. It means human intervention is required to achieve the desired results. In this paper, we describe a tool that provides automated support for identifying crosscutting concern at the requirements level. The tool utilises natural language processing technique to reason about properties of the concerns and model their structure and relationship.

关键词： Tagging Natural language processing Unified modeling language software systems software computer science Shape

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Thread-Level Parallelism & Shared-Memory Pool Techniques for Authorization of Credit Card System

Thread-Level Parallelism & Shared-Memory Pool Techniques for...

引用

International Symposium on Communications and Information Technologies (ISCIT)

作者： Mohd Hairul Nizam M. Nasir Siti Hafizah Ab. Hamid Hazrina Hassan Department of Software Engineering Faculty of Computer Science & Information Technology University of Malaya Kuala Lumpur Malaysia

Nowadays, credit card is a famous trend used by millions of people around the world as a form of payment. This paper presented an architectural framework and prototype of credit card authorization system using thread-level parallelism and shared memory pool techniques in order to support dynamic tuning of the size of the thread pool at runtime. Normally, single threaded were chosen by software developer in current credit card authorization whereby authentication process takes longer time to respond and its limitation of handling huge number of simultaneous transactions at the same time. As a result, the performance of the authorization system was affected during peak hours. Through thread-level parallelism technique or usually known as multi-threading, each worker thread will be assigned with several child threads to perform online fraud validation concurrently, depending on numbers of cryptographic elements presented in transaction message while the work thread itself performed card restriction validation based on the card information stored in card's shared memory pool.

关键词： Authorization Credit cards Yarn Parallel processing Prototypes Authentication Risk management software engineering computer science Information technology

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Random black hole particle swarm optimization and its application

Random black hole particle swarm optimization and its applic...

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International Conference on Neural Networks and Signal Processing

作者： Junqi Zhang Kun Liu Ying Tan Xingui He Languages Informatics Systems and Software Engineering Department Faculty of Computer Science Peking University Beijing China

ISBN: (纸本)9781424423101

This paper introduces a novel particle swarm optimization algorithm based on the concept of black holes in physics, called random black hole particle swarm optimization (RBH-PSO) for the first time. In each dimension of a particle, we randomly generate a black hole located nearest to the best particle of the swarm in current generation and then randomly pull particles of the swarm into the black hole with a probability p. By this mechanism of random black hole, we can give all the particles another interesting direction to converge as well as another chance to fly out of local minima when a premature convergence happens. Several experiments on fifteen benchmark test functions are conducted to demonstrate that the proposed RBH-PSO algorithm is able to speedup the evolution process distinctly and improve the performance of global optimizer greatly. Finally, an actual application of the proposed algorithm to spam detection is conducted then compared to other three current methods.

关键词： Benchmark testing Algorithm design and analysis Particle swarm optimization Optimization Electronic mail Convergence Support vector machines

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