Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030859
Vo Thi Thanh Ha, V. H. Phuong, Nguyen Tung Lam, N. P. Quang
The paper presents the development of a wind turbine emulator, which consists of an induction motor driven by a torque control inverter, and the dead-beat controller plays an important role in this structure. The wind turbine emulator system includes the dead-beat current controller, wind speed emulator, mathematical model of wind turbines, model of rotor blade characteristics, and model of tower effect and rotor inertia. The advantages of the emulator are various wind profiles and wind turbines can be simulated as desired in the control software and it is also integrated the data acquisition to verify the control algorithms and display the parameters. The experimental results confirmed the wind turbine simulator could perform satisfactory under steady state wind profile. This approach provides an instantaneous torque output, which is particularly advantageous for the proposed controller.
{"title":"A dead-beat current controller based wind turbine emulator","authors":"Vo Thi Thanh Ha, V. H. Phuong, Nguyen Tung Lam, N. P. Quang","doi":"10.1109/ICSSE.2017.8030859","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030859","url":null,"abstract":"The paper presents the development of a wind turbine emulator, which consists of an induction motor driven by a torque control inverter, and the dead-beat controller plays an important role in this structure. The wind turbine emulator system includes the dead-beat current controller, wind speed emulator, mathematical model of wind turbines, model of rotor blade characteristics, and model of tower effect and rotor inertia. The advantages of the emulator are various wind profiles and wind turbines can be simulated as desired in the control software and it is also integrated the data acquisition to verify the control algorithms and display the parameters. The experimental results confirmed the wind turbine simulator could perform satisfactory under steady state wind profile. This approach provides an instantaneous torque output, which is particularly advantageous for the proposed controller.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121304308","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}
Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030939
Tiep Nguyen, S. Cook, V. Ireland, I. Gunawan
The major contribution of this paper is to propose a hybrid approach to improve the comprehensiveness of Cost-Benefit Analysis (CBA) for transport infrastructure projects. CBA is often employed to inform decision makers about the desirability of transport infrastructure investment options. One of the main limitations of traditional CBA approaches is that they do not provide a dynamic view which explicitly illustrates the cost and benefit relationships between component entities over time. This paper addresses this issue by describing a hybrid approach that is a combination between Agent-Based Modelling (ABM) and System Dynamics (SD) that incorporates the Multi-Criteria Method (MCM) to perform transport infrastructure CBA. We discuss how by integrating Agent-Based Modeling into a CBA model, it enables us to model stakeholders' behavior and to investigate complex relationships that result. Next, we describe how the outputs of the BM are used as inputs to the SD model to establish relationship between system components and to measure the impacts of project investment options on the local community. Execution of models also enables sensitivity analysis of infrastructure investment options and visualization of the cost-benefit behavior of each variant over time. The approach is demonstrated using a typical example of a transport infrastructure project.
{"title":"A hybrid approach to Cost-Benefit Analysis in transport infrastructure projects","authors":"Tiep Nguyen, S. Cook, V. Ireland, I. Gunawan","doi":"10.1109/ICSSE.2017.8030939","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030939","url":null,"abstract":"The major contribution of this paper is to propose a hybrid approach to improve the comprehensiveness of Cost-Benefit Analysis (CBA) for transport infrastructure projects. CBA is often employed to inform decision makers about the desirability of transport infrastructure investment options. One of the main limitations of traditional CBA approaches is that they do not provide a dynamic view which explicitly illustrates the cost and benefit relationships between component entities over time. This paper addresses this issue by describing a hybrid approach that is a combination between Agent-Based Modelling (ABM) and System Dynamics (SD) that incorporates the Multi-Criteria Method (MCM) to perform transport infrastructure CBA. We discuss how by integrating Agent-Based Modeling into a CBA model, it enables us to model stakeholders' behavior and to investigate complex relationships that result. Next, we describe how the outputs of the BM are used as inputs to the SD model to establish relationship between system components and to measure the impacts of project investment options on the local community. Execution of models also enables sensitivity analysis of infrastructure investment options and visualization of the cost-benefit behavior of each variant over time. The approach is demonstrated using a typical example of a transport infrastructure project.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126330217","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}
Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030919
Trong Nghia Le, Lan Anh Dinh Thi, Trong Khanh Nghiem, Hong Viet Phuong Nguyen, D. K. Truong, Tran Hiep Nguyen, Van Cong Hoang, Minh Dong Pham
This work proposes a novel authentication method for identifying Unmanned Aerial Vehicles (UAVs) based on a channel-tap power. A ground control station utilized the channel-tap power as a radio-frequency fingerprint (RFF) to directly detect UAVs via physical (PHY) layer. The proposed authentication method uses the Neyman-Pearson test to discriminate between two UAVs, UAVI and UAVA, which are controlled by the ground control station. The proposed methods helps the ground control station completely detect UAVI and UAVA using PHY layer. Finally, the performances are analyzed, and simulations are conducted to evaluate the performance of the proposed authenticator. From simulation results, for SNR = −5 dB and the false alarm probability of 0.2, the ground control station can detect the UAV with the detection probability of 0.90 under the UAV speed of 70 km/h.
{"title":"Complementary authenticator design for ground control station to identify Unmanned Aerial Vehicles based on channel-tap power","authors":"Trong Nghia Le, Lan Anh Dinh Thi, Trong Khanh Nghiem, Hong Viet Phuong Nguyen, D. K. Truong, Tran Hiep Nguyen, Van Cong Hoang, Minh Dong Pham","doi":"10.1109/ICSSE.2017.8030919","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030919","url":null,"abstract":"This work proposes a novel authentication method for identifying Unmanned Aerial Vehicles (UAVs) based on a channel-tap power. A ground control station utilized the channel-tap power as a radio-frequency fingerprint (RFF) to directly detect UAVs via physical (PHY) layer. The proposed authentication method uses the Neyman-Pearson test to discriminate between two UAVs, UAVI and UAVA, which are controlled by the ground control station. The proposed methods helps the ground control station completely detect UAVI and UAVA using PHY layer. Finally, the performances are analyzed, and simulations are conducted to evaluate the performance of the proposed authenticator. From simulation results, for SNR = −5 dB and the false alarm probability of 0.2, the ground control station can detect the UAV with the detection probability of 0.90 under the UAV speed of 70 km/h.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116261721","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}
Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030856
P. L. Minh, Hoa Pham Thi Xuan, Duy Hoang Vo Duc, H. Minh
In this paper, a reactive power sharing strategy that uses droop controller combined with virtual impedance and estimating the voltage drop due to the line impedance to improve significantly improves the reactive power control and sharing accuracy. Because of, with a given minimum allowable voltage of system, the voltage droop slope cannot be made arbitrarily large, so this paper presents a better way to improve the reactive power control and sharing accuracy is to incorporate the line voltage drop effect into the power control. This can be realized by adding the coefficient slopes of the voltage into droop control, to estimate the voltage drop due to line impedance and effect of local loads. Finally, considering the different locations of loads in a multibus microgrid. The proposed reactive power cosharing strategy has been tested in simulation Matlab/Simulink.
{"title":"Control of power sharing in an island microgrid using virtual impedance","authors":"P. L. Minh, Hoa Pham Thi Xuan, Duy Hoang Vo Duc, H. Minh","doi":"10.1109/ICSSE.2017.8030856","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030856","url":null,"abstract":"In this paper, a reactive power sharing strategy that uses droop controller combined with virtual impedance and estimating the voltage drop due to the line impedance to improve significantly improves the reactive power control and sharing accuracy. Because of, with a given minimum allowable voltage of system, the voltage droop slope cannot be made arbitrarily large, so this paper presents a better way to improve the reactive power control and sharing accuracy is to incorporate the line voltage drop effect into the power control. This can be realized by adding the coefficient slopes of the voltage into droop control, to estimate the voltage drop due to line impedance and effect of local loads. Finally, considering the different locations of loads in a multibus microgrid. The proposed reactive power cosharing strategy has been tested in simulation Matlab/Simulink.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121226622","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}
Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030973
H. Ngo, T. Nguyen, T.-S. Le, V. Huynh, H. Tran
This paper concerntrates on the analysis, design and control methodology in the machining servo system. The overall architecture of motion system is investigated to realize the drawbacks of traditional scheme. Then, this research proposes the suitable design of controller due to rapid calculation, high precision and friendly graphical user interface. The diagram of Fuzzy self-tuning PID and feedforward is constructed to drive the servo machine. The hardware platform of controller has been accomplised such as schematic, PCB artworks and soldering. Later, the middleware and firmware have been closed to promote the execution between controller and computer. The intelligent algorithm is embedded in board level by TMS320C6727 to overcome the problems, for example the existing nonlinear properties, external disturbances or servo lag phenomena. Based on the theoretical design, several simulation results are provided to verify the contributions. From the experimental performance, it can be seen clearly that this controller smoothly manipulate the servo motor, ensure real-time performance and high tracking position.
{"title":"Experimental design of PC-based servo system","authors":"H. Ngo, T. Nguyen, T.-S. Le, V. Huynh, H. Tran","doi":"10.1109/ICSSE.2017.8030973","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030973","url":null,"abstract":"This paper concerntrates on the analysis, design and control methodology in the machining servo system. The overall architecture of motion system is investigated to realize the drawbacks of traditional scheme. Then, this research proposes the suitable design of controller due to rapid calculation, high precision and friendly graphical user interface. The diagram of Fuzzy self-tuning PID and feedforward is constructed to drive the servo machine. The hardware platform of controller has been accomplised such as schematic, PCB artworks and soldering. Later, the middleware and firmware have been closed to promote the execution between controller and computer. The intelligent algorithm is embedded in board level by TMS320C6727 to overcome the problems, for example the existing nonlinear properties, external disturbances or servo lag phenomena. Based on the theoretical design, several simulation results are provided to verify the contributions. From the experimental performance, it can be seen clearly that this controller smoothly manipulate the servo motor, ensure real-time performance and high tracking position.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122667400","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}
Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030947
M. Hu, Liang-Hsiu Chen
In this paper, a high vacuum glove box control system is developed, which allows the user to carry out the removal of water and oxygen in the glove box through the setting of various control parameters so as to quickly reach the requirement of micro-oxygen micro-water concentration. The existing glove box control method usually has experimental procedures that will be interrupted and wasteful manpower limitations. To improve these problems, the system is equipped with A and B two reaction tanks, the use of hardware pipeline switching design and monitoring software control to provide two sets of reaction tank synchronous implementation of the cycle of cleaning and regeneration procedures, that can not only provide the users non-interrupted experiment processes, but also greatly save labor costs and enhance the removal efficiency of glove box.
{"title":"The development of a high vacuum glove box control system with cycling cleaning and regeneration","authors":"M. Hu, Liang-Hsiu Chen","doi":"10.1109/ICSSE.2017.8030947","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030947","url":null,"abstract":"In this paper, a high vacuum glove box control system is developed, which allows the user to carry out the removal of water and oxygen in the glove box through the setting of various control parameters so as to quickly reach the requirement of micro-oxygen micro-water concentration. The existing glove box control method usually has experimental procedures that will be interrupted and wasteful manpower limitations. To improve these problems, the system is equipped with A and B two reaction tanks, the use of hardware pipeline switching design and monitoring software control to provide two sets of reaction tank synchronous implementation of the cycle of cleaning and regeneration procedures, that can not only provide the users non-interrupted experiment processes, but also greatly save labor costs and enhance the removal efficiency of glove box.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122824078","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}
Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030907
P. Cuong, Tran Duc Quy, E. Yoon
This paper presents an investigation on combined surface modifications and their effects to tribological properties of Si (100) flat surfaces. At first, micro-patterns were fabricated on Si wafers using photolithography and DRIE (Deep Reactive Ion Etching) fabrication techniques. The patterns include of pillars and channels shape in micro-scales. Secondly, the Si micro-patterns were coated by thin diamond-like carbon (DLC) or Perfluoropolyether (ZDOL) film, individually. The surfaces were then evaluated for the friction and wear properties at micro-scale. Results showed that the patterned surface exhibited reduced friction force compared to the Si flat surfaces, owing to reduced area of contact. Further, the combination of micro-patterns and tribology films such as DLC and ZDOL in this work is very effective in reducing frictional force and wear of the Si flat surface, and would be proved as a potential candidate for tribological applications in miniaturized devices like MEMS.
{"title":"A study on surface modification for tribological application in MEMS","authors":"P. Cuong, Tran Duc Quy, E. Yoon","doi":"10.1109/ICSSE.2017.8030907","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030907","url":null,"abstract":"This paper presents an investigation on combined surface modifications and their effects to tribological properties of Si (100) flat surfaces. At first, micro-patterns were fabricated on Si wafers using photolithography and DRIE (Deep Reactive Ion Etching) fabrication techniques. The patterns include of pillars and channels shape in micro-scales. Secondly, the Si micro-patterns were coated by thin diamond-like carbon (DLC) or Perfluoropolyether (ZDOL) film, individually. The surfaces were then evaluated for the friction and wear properties at micro-scale. Results showed that the patterned surface exhibited reduced friction force compared to the Si flat surfaces, owing to reduced area of contact. Further, the combination of micro-patterns and tribology films such as DLC and ZDOL in this work is very effective in reducing frictional force and wear of the Si flat surface, and would be proved as a potential candidate for tribological applications in miniaturized devices like MEMS.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131432840","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}
Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030870
Duong Nguyen-Ngoc Tran, L. Pham, Ha Manh Tran, Synh Viet-Uyen Ha
In the traffic surveillance system (TSS), there are many factors affect the qualities of the result. Through practical application, it is difficult to determine which scene changing during the day period, from the daylight to nighttime, the conversion of the sunny and overcast, wet and dry scene. However, there have been no controlled studies which illustrate the method to distinguish environment scene, which is the one of six main challenges in TSS. Therefore, this paper presents the method to detect and recognize the change of scene during all-day surveillance; Thus, TSS adopt the recognition to determine the appropriate method for each scene, for increasing performance. Our recognition model is based on the combination of the CIE-Lab color space and the histogram of the region-of-interest (ROI) in each frame, which used for extracting the feature for the Feed Forward Neural Network to perform the detection. In the experiment section, our results show that the benefits of our proposed method in the real-world traffic surveillance system.
{"title":"Scene recognition in traffic surveillance system using Neural Network and probabilistic model","authors":"Duong Nguyen-Ngoc Tran, L. Pham, Ha Manh Tran, Synh Viet-Uyen Ha","doi":"10.1109/ICSSE.2017.8030870","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030870","url":null,"abstract":"In the traffic surveillance system (TSS), there are many factors affect the qualities of the result. Through practical application, it is difficult to determine which scene changing during the day period, from the daylight to nighttime, the conversion of the sunny and overcast, wet and dry scene. However, there have been no controlled studies which illustrate the method to distinguish environment scene, which is the one of six main challenges in TSS. Therefore, this paper presents the method to detect and recognize the change of scene during all-day surveillance; Thus, TSS adopt the recognition to determine the appropriate method for each scene, for increasing performance. Our recognition model is based on the combination of the CIE-Lab color space and the histogram of the region-of-interest (ROI) in each frame, which used for extracting the feature for the Feed Forward Neural Network to perform the detection. In the experiment section, our results show that the benefits of our proposed method in the real-world traffic surveillance system.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121787199","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}
Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030850
C. Liang, S. Su, Ming-Chang Chen
In this paper, a non-preprocess calibration of depth image is proposed Take advantage of FCM to acquire the depth value distribution in the depth image. After that, according to relation among all the centroids of cluster, the real distance is estimated. Then, the error of the depth value is able to be compensated. When utilize the proposed method, plenty of pre-process for calibration can be avoided, such as using chessboard to capture the camera parameters, or recording measurement error in advance. Therefore, time cost, inconvenient, and human error for calibration can be reduced significantly. Utilize the proposed method can offer the users a reliable depth camera without traditional calibration procedure. At last, the proposed method is verified by comparing the consequents with traditional depth calibration and laser rangefinder. The results show it has an outstanding performance.
{"title":"Non-pre-process calibration of depth image based on fuzzy c-mean","authors":"C. Liang, S. Su, Ming-Chang Chen","doi":"10.1109/ICSSE.2017.8030850","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030850","url":null,"abstract":"In this paper, a non-preprocess calibration of depth image is proposed Take advantage of FCM to acquire the depth value distribution in the depth image. After that, according to relation among all the centroids of cluster, the real distance is estimated. Then, the error of the depth value is able to be compensated. When utilize the proposed method, plenty of pre-process for calibration can be avoided, such as using chessboard to capture the camera parameters, or recording measurement error in advance. Therefore, time cost, inconvenient, and human error for calibration can be reduced significantly. Utilize the proposed method can offer the users a reliable depth camera without traditional calibration procedure. At last, the proposed method is verified by comparing the consequents with traditional depth calibration and laser rangefinder. The results show it has an outstanding performance.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133830174","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}
Pub Date : 2017-07-01DOI: 10.1109/ICSSE.2017.8030880
N. Phuong, Nguyen Duc Duy
In this paper, we propose a mining algorithm for average-utility itemsets (EHAUI-Tree) based on improving HUUI-Tree algorithm to apply for adding new database transactions without restart. At first, the value of updated data is calculated. Then, itemsets which make changes will be calculated and updated depending upon the updated data value and the previous High Average-utility Upper-bound (HAUUB). This algorithm uses the downward closure property of an average-utility itemset and an index table structure. In addition, a data structure for itemsets is proposed to minimize memory usage and maximize calculating efficiency. The experimental result shows that EHAUI-Tree is more effective than HAUI-Tree when adding new transactions for the previous database. The method applies the downward closure properties of HAUUB Itemset and Index Table. Furthermore, the Bit-Array-structure itemset is also proposed to reduce using memory and calculate more effectively. The result of this algorithm is better than HAUI-Tree on updating new transactions.
{"title":"Constructing a new algorithm for high average utility Itemsets mining","authors":"N. Phuong, Nguyen Duc Duy","doi":"10.1109/ICSSE.2017.8030880","DOIUrl":"https://doi.org/10.1109/ICSSE.2017.8030880","url":null,"abstract":"In this paper, we propose a mining algorithm for average-utility itemsets (EHAUI-Tree) based on improving HUUI-Tree algorithm to apply for adding new database transactions without restart. At first, the value of updated data is calculated. Then, itemsets which make changes will be calculated and updated depending upon the updated data value and the previous High Average-utility Upper-bound (HAUUB). This algorithm uses the downward closure property of an average-utility itemset and an index table structure. In addition, a data structure for itemsets is proposed to minimize memory usage and maximize calculating efficiency. The experimental result shows that EHAUI-Tree is more effective than HAUI-Tree when adding new transactions for the previous database. The method applies the downward closure properties of HAUUB Itemset and Index Table. Furthermore, the Bit-Array-structure itemset is also proposed to reduce using memory and calculate more effectively. The result of this algorithm is better than HAUI-Tree on updating new transactions.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114197384","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}
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