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AK-means: an automatic clustering algorithm based on K-means AK-means:基于K-means的自动聚类算法
Journal of Advanced Computer Science and Technology Pub Date : 2015-06-13 DOI: 10.14419/JACST.V4I2.4749
O. Kettani, F. Ramdani, B. Tadili
{"title":"AK-means: an automatic clustering algorithm based on K-means","authors":"O. Kettani, F. Ramdani, B. Tadili","doi":"10.14419/JACST.V4I2.4749","DOIUrl":"https://doi.org/10.14419/JACST.V4I2.4749","url":null,"abstract":"In data mining, K-means is a simple and fast algorithm for solving clustering problems, but it requires that the user provides in advance the exact number of clusters (k), which is often not obvious. Thus, this paper intends to overcome this problem by proposing a parameter-free algorithm for automatic clustering. It is based on successive adequate restarting of K-means algorithm. Experiments conducted on several standard data sets demonstrate that the proposed approach is effective and outperforms the related well known algorithm G-means, in terms of clustering accuracy and estimation of the correct number of clusters.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129817727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Assessing quality in software development: An agile methodology approach 软件开发中的质量评估:敏捷方法论方法
Journal of Advanced Computer Science and Technology Pub Date : 2015-06-09 DOI: 10.14419/JACST.V4I2.4173
V. Rodríguez-Hernández, M. C. Espino-Gudiño, J. L. González-Pérez, J. Gudiño-Bazaldúa, V. Castaño
{"title":"Assessing quality in software development: An agile methodology approach","authors":"V. Rodríguez-Hernández, M. C. Espino-Gudiño, J. L. González-Pérez, J. Gudiño-Bazaldúa, V. Castaño","doi":"10.14419/JACST.V4I2.4173","DOIUrl":"https://doi.org/10.14419/JACST.V4I2.4173","url":null,"abstract":"A novel methodology, result of 10 years of in-field testing, which makes possible the convergence of different types of models and quality standards for Engineering and Computer Science Faculties, is presented. Since most software-developing companies are small and medium sized, the projects developed must focuson SCRUM and Extreme Programming (XP), opposed to a RUP, which is quite heavy, as well as on Personal Software Process (PSP) and Team Software Process (TSP), which provide students with competences and a structured framework. ISO 90003:2004 norm is employed to define the processes by means of a quality system without new requirements or changing the existing ones. Also, the model is based on ISO/IEC 25000 (ISO (IEC 9126 – ISO/IEC 14598)) to allow comparing software built by different metrics.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124543168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Fingerprint pattern recognition from bifurcations: An alternative approach. 从分岔中识别指纹模式:一种替代方法。
Journal of Advanced Computer Science and Technology Pub Date : 2015-05-31 DOI: 10.14419/JACST.V4I2.4343
A. Castañeda-Miranda, R. Castañeda-Miranda, V. Castaño
{"title":"Fingerprint pattern recognition from bifurcations: An alternative approach.","authors":"A. Castañeda-Miranda, R. Castañeda-Miranda, V. Castaño","doi":"10.14419/JACST.V4I2.4343","DOIUrl":"https://doi.org/10.14419/JACST.V4I2.4343","url":null,"abstract":"A pc-based automatic system for fingerprints recording and classification is described, based on the vector analysis of bifurcations. The system consists of a six-step process: a) acquisition, b) preprocessing, c) fragmentation, d) representation, e) description, and f) recognition. Details of each stage, along with actual examples of fingerprints recognition are provided.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134443356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Study of transitory phenomena at connecting the capacitive loads to an AC power source 研究电容性负载与交流电源连接时的暂态现象
Journal of Advanced Computer Science and Technology Pub Date : 2015-05-27 DOI: 10.14419/JACST.V4I1.4656
T. Niculescu, M. Marcu, F. Popescu
{"title":"Study of transitory phenomena at connecting the capacitive loads to an AC power source","authors":"T. Niculescu, M. Marcu, F. Popescu","doi":"10.14419/JACST.V4I1.4656","DOIUrl":"https://doi.org/10.14419/JACST.V4I1.4656","url":null,"abstract":"This paper presents a new and a modern method for study the inductive-capacitive circuits which are connected to an AC power source, using modern methods based on digital technology and software used in engineering applications. The capacitive circuits which are switched on an AC power source at the initial moment are presented below. We can determine the capacitor current variation forms, the capacitor voltage in a transient regime by using virtual mediums, in two different regimes: the oscillating regime and the-periodic regime. Each presented case contains an analytical presentation of the phenomenon, but it also contains the diagrams of current and voltage capacitors. The diagrams were obtained by two methods, which use MATLAB package. These diagrams are compared with experimental measurements obtained with a data-acquisition system produced by National Instruments using LABVIEW software.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122388729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
A taxonomy of : The reviews on Cloud Computing Direction (CCD) 云计算方向(CCD)综述分类
Journal of Advanced Computer Science and Technology Pub Date : 2015-05-01 DOI: 10.14419/JACST.V4I1.4564
A. Yassin, Ban Kassim Alnidawy
{"title":"A taxonomy of : The reviews on Cloud Computing Direction (CCD)","authors":"A. Yassin, Ban Kassim Alnidawy","doi":"10.14419/JACST.V4I1.4564","DOIUrl":"https://doi.org/10.14419/JACST.V4I1.4564","url":null,"abstract":"The manufacturing industry is undergoing a major transformation enabled by IT and related smart technologies. The main thrust of Cloud computing is to provide on-demand computing services with high reliability, scalability and availability in a distributed environment. This paper summarizes our taxonomy of the CC review direction. The goals of this taxonomy were (i) clarify the needs and the directions of the use of the CC, (ii) define the academic and practical issues involved in CC , (iii) learn the state of the directions on methodologies of the CC , (iv) identify future research directions, which benefit the short and long terms. The taxonomy has concluded that (i) CC is advantageous in dealing with changes and uncertainties in the every-changing environment. (ii)It has been found that few existing CC can achieve the objective of security. (iii) The obstacles of the development of CC include the difficulties to identify and generalize the requirement of CC security, the lake of effective technologies that can be used to support the clouding use, and no international origination that serves for standardizing the modular components for cloud computing processes. In this paper, we use the IVSL(The Iraq Virtual Science Library) to select the free, full-text access to papers from major publishers as well as a large collection of on-line educational materials.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127918721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Medical Image Segmentation Based on Edge Detection Techniques 基于边缘检测技术的医学图像分割
Journal of Advanced Computer Science and Technology Pub Date : 2015-05-01 DOI: 10.14738/AIVP.32.1006
N. Salman, Bnar M Ghafour, Gullanar M. Hadi
{"title":"Medical Image Segmentation Based on Edge Detection Techniques","authors":"N. Salman, Bnar M Ghafour, Gullanar M. Hadi","doi":"10.14738/AIVP.32.1006","DOIUrl":"https://doi.org/10.14738/AIVP.32.1006","url":null,"abstract":"In  this  article  a  new  combination  of  image  segmentation  techniques  including  K-means clustering,  watershed  transform,  region  merging  and  growing  algorithm  was  proposed  to segment computed tomography(CT) and magnetic resonance(MR) medical images. The first stage in the proposed system is \"preprocessing\" for required  image enhancement, cropped, and convert the images into .mat or png ...etc image file formats then the image will be segmented using combination    methods (clustering , region growing, and watershed, thresholding).  Some  initial  over-segmentation  appears  due  to  the  high  sensitivity  of  the watershed algorithm to  the gradient image intensity variations. Here,  K- means  and region growing with correct thresholding value are used to overcome that over segmentations. in our system the number of pixels of segmented area is calculated which is very important for medical image analysis for diseases or medicine effects on affected area of human body. also displaying the edge map. The results show that using clustering method output to region growing as input image, gives accurate and very good results compare with watershed technique which depends on gradient of input image, the mean and the threshold values which are chosen manually. Also the results show that the manual selection of the threshold value for the watershed is not as good as automatically selecting, where data misses may be happen.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127540188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Study of transient phenomena using NI-USB data acquisition systems in Matlab-Simulink medium on 64 bit operating systems NI-USB数据采集系统在64位操作系统上Matlab-Simulink介质的瞬态现象研究
Journal of Advanced Computer Science and Technology Pub Date : 2015-04-24 DOI: 10.14419/JACST.V4I1.4518
Niculescu Titu
{"title":"Study of transient phenomena using NI-USB data acquisition systems in Matlab-Simulink medium on 64 bit operating systems","authors":"Niculescu Titu","doi":"10.14419/JACST.V4I1.4518","DOIUrl":"https://doi.org/10.14419/JACST.V4I1.4518","url":null,"abstract":"The paper presents a new and modern method for study the transient phenomena appeared to connect the capacitive charges to an AC power source, using the MATLAB-SIMULINK software package. It is known that NI-USB data-acquisition systems manufactured by National Instruments are not seen by Simulink software package in 64-bit systems. For this is obligatory for use a 32-bit system. From this point of view, the article presents a method by which this disadvantage is eliminated, making possible the data acquisition process in Simulink software package.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115103591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Problem solving of container loading using genetic algorithm based on modified random keys 基于修改随机密钥的遗传算法求解集装箱装载问题
Journal of Advanced Computer Science and Technology Pub Date : 2015-04-15 DOI: 10.14419/JACST.V4I1.4348
Mohammad Sadegh Arefi, H. Rezaei
{"title":"Problem solving of container loading using genetic algorithm based on modified random keys","authors":"Mohammad Sadegh Arefi, H. Rezaei","doi":"10.14419/JACST.V4I1.4348","DOIUrl":"https://doi.org/10.14419/JACST.V4I1.4348","url":null,"abstract":"This article presents a solution to the container loading problem. Container loading problem deals with how to put the cube boxes with different sizes in a container. Our proposed method is based on a particular kind of genetic algorithm based on biased random keys. In the proposed algorithm, we will face generations' extinction. Population decreases with time and with the staircase changes in the rate of elitism, the algorithm is guided towards the global optimum. Biased random keys in the proposed method are provided as discrete. The algorithm also provides the chromosomes that store more than one ability. In order to solve container loading using a placement strategy, due to the size of the boxes and containers, the containers are classified as small units and equal unites in size. Finally the algorithm presented in this paper was compared with three other methods that are based on evolutionary algorithms. The results show that the proposed algorithm has better performance in terms of results and performance time in relation to other methods.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131462231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
ANN-based modeling of third order runge kutta method 基于人工神经网络的三阶龙格库塔法建模
Journal of Advanced Computer Science and Technology Pub Date : 2015-04-12 DOI: 10.14419/JACST.V4I1.4365
M. Dehghanpour, A. Rahati, E. Dehghanian
{"title":"ANN-based modeling of third order runge kutta method","authors":"M. Dehghanpour, A. Rahati, E. Dehghanian","doi":"10.14419/JACST.V4I1.4365","DOIUrl":"https://doi.org/10.14419/JACST.V4I1.4365","url":null,"abstract":"The world's common rules (Quantum Physics, Electronics, Computational Chemistry and Astronomy) find their normal mathematical explanation in language of differential equations, so finding optimum numerical solution methods for these equations are very important. In this paper, using an artificial neural network (ANN) a numerical approach is designed to solve a specific system of differential equations such that the training process of the ANN  calculates the  optimal values for the coefficients of third order Runge Kutta method. To validate our approach, we performed some experiments by solving two body problem using coefficients obtained by ANN and also two other well-known coefficients namely Classical and Heun. The results show that the ANN approach has a better performance in compare with two other approaches.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132380936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Comparison criteria between matching algorithms texts application on (horspool's and brute force algorithms) 匹配算法文本应用的比较标准(horspool算法和蛮力算法)
Journal of Advanced Computer Science and Technology Pub Date : 2015-04-12 DOI: 10.14419/JACST.V4I1.4283
Amin Mubark Alamin Ibrahim, M. Mustafa
{"title":"Comparison criteria between matching algorithms texts application on (horspool's and brute force algorithms)","authors":"Amin Mubark Alamin Ibrahim, M. Mustafa","doi":"10.14419/JACST.V4I1.4283","DOIUrl":"https://doi.org/10.14419/JACST.V4I1.4283","url":null,"abstract":"The subject of matching text or search the texts is important topics in the field of computer science and is used in many programs such as Microsoft word program in correct spelling mistakes and search &replace, and other uses. The aim of this study was to learn how to trade-off texts matching algorithms, which are very much where we have the application on Horspool's and Brute Force algorithms. According to the standard number of comparisons and time of execution. The study pointed on preference Horspool's algorithm.","PeriodicalId":445404,"journal":{"name":"Journal of Advanced Computer Science and Technology","volume":"273 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121575149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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