This study presents a comprehensive framework for intelligent management in communication engineering construction,addressing critical challenges posed by 5G/6G network evolution and New Infrastructure policies.Center...This study presents a comprehensive framework for intelligent management in communication engineering construction,addressing critical challenges posed by 5G/6G network evolution and New Infrastructure policies.Centered on a digital twin-driven architecture,the proposed system integrates space-air-ground monitoring,AIoT-enabled self-organizing networks,and SDN-based elastic resource scheduling to achieve end-to-end lifecycle optimization.A four-dimensional hierarchical model(Perception-Network-Platform-Application)is developed to enhance cross-domain collaboration through intelligent sensing,hybrid networking,and augmented reality decision support.Key innovations include:(1)a dynamic Bayesian network for real-time risk prediction,reducing response time by 40%;(2)a reinforcement learning-driven resource allocation mechanism,improving equipment coordination efficiency by 30%;and(3)a blockchain-enhanced industrial metaverse platform,resolving ecosystem fragmentation via smart contracts and standardized protocols.Empirical validation demonstrates significant gains in project controllability and cost-effectiveness.Future directions extend the framework to 6G reconfigurable surfaces,quantum-secured command systems,and embodied AI construction robots,offering transformative pathways for autonomous and adaptive engineering ecosystems.展开更多
This paper proposes teaching reforms in communication engineering majors,emphasizing the implementation of digital and adaptive teaching methodologies,integrating emerging technologies,breaking free from the constrain...This paper proposes teaching reforms in communication engineering majors,emphasizing the implementation of digital and adaptive teaching methodologies,integrating emerging technologies,breaking free from the constraints of traditional education,and fostering high-caliber talents.The reform measures encompass fundamental data collection,recognition of individual characteristics,recommendation of adaptive learning resources,process-oriented teaching management,adaptive student guidance and early warning systems,personalized evaluation,and the construction of an integrated service platform.These measures,when combined,form a comprehensive system that is expected to enhance teaching quality and efficiency,and facilitate student development.展开更多
With the continuous development of China's economic level and science and technology, in recent years, the communication engineering industry has made a great breakthrough. At the same time, there are some problem...With the continuous development of China's economic level and science and technology, in recent years, the communication engineering industry has made a great breakthrough. At the same time, there are some problems in China's communication engineering construction, which affect the development of the whole communication engineering industry. Frequent safety accidents have brought great economic influence to construction enterprises and units of construction projects. Therefore, the establishment and implementation of modern security management system in communications enterprises has become an important measure to improve the level of security management in communications engineering. Based on this, this paper firstly briefly analyzes the significance and importance of strengthening the safety management of communication engineering construction, then puts forward the problems existing in the safety management of communication engineering construction, and finally puts forward corresponding solutions to the problems existing in the safety management of communication engineering, so as to provide reference for relevant people to exchange.展开更多
Communication engineering is often referred to as "information engineering", which itself is an important branch of electronic engineering, in the environment of the information age, communication engineerin...Communication engineering is often referred to as "information engineering", which itself is an important branch of electronic engineering, in the environment of the information age, communication engineering as an important medium of information transmission, its construction has practical and far-reaching positive significance for the development of the country and society. Based on the importance of communication, improve the quality of data transmission speed of communication engineering, obviously is a path in the field of communication in the future and most important, and the application of optical fiber cable communication technology can effectively realize the data transmission speed and quality in communication engineering, information interaction under the information age speed and productivity are directly related. Therefore, the research on the application of fiber optic wired communication technology can lay a solid information foundation for the future development of our country to a certain extent, and it will have a huge impact in the field of information engineering and other fields.展开更多
With the continuous progress and development of communication technology, the communication industry is constantly updated, and the speed of communication technology and equipment is accelerating. Subsequently, the co...With the continuous progress and development of communication technology, the communication industry is constantly updated, and the speed of communication technology and equipment is accelerating. Subsequently, the construction management of communication engineering also needs to be more standardized and informationized, so as to improve the progress, quality, cost, scope, compliance, safety, communication risk and other aspects of communication engineering construction, reducing the labor cost and improving the economic benefits of communication enterprises.展开更多
With the continuous development of social economy and science and technology, great changes have taken place in people's way of life and quality. Among them, the communication industry is affected by the economic ...With the continuous development of social economy and science and technology, great changes have taken place in people's way of life and quality. Among them, the communication industry is affected by the economic system, increasing the influence of advanced technology, and paying attention to the quality management of engineering projects. As for the construction and management of communication engineering, while ensuring the smooth project network, the management level of project quality should be improved to maintain the effective development of social life and communication. In this paper, communication engineering projects are studied in detail.展开更多
In recent years, China's economy has been developing rapidly, and the communications industry has been further developed by the spring breeze of economic development. Under such a development trend, China has paid...In recent years, China's economy has been developing rapidly, and the communications industry has been further developed by the spring breeze of economic development. Under such a development trend, China has paid more and more attention to the communication construction, and required relevant units to accelerate the completion of communication construction projects, improve the construction quality and efficiency of projects, so as to improve the degree of modernization and informatization of the society, which has brought great pressure to relevant construction units. In addition, China is a vast country in the world, and the construction of communication projects requires a large number of infrastructure points as the foundation, in order to achieve the expected construction effect, which brings a huge workload to the construction units. In this regard, the relevant construction units should pay attention to it, face up to the difficulties, and fully realize the importance of communication engineering construction for the development of our country. In order to ensure the construction efficiency, it can also carry out effective quality control and supervision on the construction of communication engineering. This paper first describes the construction characteristics of communication engineering, then briefly explains several factors that must be paid attention to in the construction process of communication engineering, and finally explains the specific strategy of communication engineering construction quality control in detail, so as to provide relevant professionals with communication and thinking.展开更多
With the rapid growth of mobile data traffic and the continuous expansion of various new services, 5G mobile communication technology aiming at meeting the wide application requirements of ultra-high service throughpu...With the rapid growth of mobile data traffic and the continuous expansion of various new services, 5G mobile communication technology aiming at meeting the wide application requirements of ultra-high service throughput has become a research hotspot. Full duplex communication technology can double the spectral efficiency. With the emergence of effective self-interference cancellation technology, full duplex technology is widely used. Non orthogonal multiple access technology allows multiple users to transmit information in the same time-frequency resources. Noma technology can simplify the access process and meet the low delay requirements of 5G network.5G technology has become the core technology of communication engineering construction, which can improve the transmission quality of communication engineering and provide strong support for intelligent communication. Affected by many factors, 5G technology is not ideal in communication engineering. In recent years, the expansion of domestic science and technology has continued to accelerate, and the world's development is moving towards intelligence. The application of 5G technology has effectively improved the speed of information and data transmission.展开更多
In recent years, China's underground rail transit projects continue to flood out. Underground communication engineering involves a lot of technical points in the actual work, and the difficulty of the actual const...In recent years, China's underground rail transit projects continue to flood out. Underground communication engineering involves a lot of technical points in the actual work, and the difficulty of the actual construction is relatively large, which brings great difficulties and challenges to the subway communication engineering. Only by fully grasping the technical points in the construction, can the effective countermeasures of quality control be fully implemented. Therefore, it is necessary to comprehensively control the key points of subway signal engineering technology and construction, comprehensively improve the quality of subway communication engineering, and ensure the safety and stability of subway in actual operation. In view of the influence of the environment and different factors, it is necessary to make a thorough analysis of the technology of subway communication engineering and strictly control the engineering quality combining with the actual situation. Therefore, in the actual work of subway communication engineering, construction technology plays a crucial role in the subway communication engineering, and its engineering quality control and construction technology will seriously affect the quality of subway in the actual operation.展开更多
The influence of modern electronic technology on communication engineering is explained in this paper.Based on the development status of communication engineering,the characteristics and application strategies of mode...The influence of modern electronic technology on communication engineering is explained in this paper.Based on the development status of communication engineering,the characteristics and application strategies of modern electronic technology in communication engineering are discussed,including the optimization and improvement of wireless communication system.展开更多
Innovation and entrepreneurship education is becoming one of the important goals of higher education in China.According to the requirements of the Ministry of Education to deepen the reform of innovation and entrepren...Innovation and entrepreneurship education is becoming one of the important goals of higher education in China.According to the requirements of the Ministry of Education to deepen the reform of innovation and entrepreneur-ship education in colleges and universities,we propose a core principle of“from basis to comprehensiveness,and then to innovation”to construct the software design and programming practice course in the information and communication engineering discipline.We have integrated specialized knowledge teaching with innovation and entrepreneurship training,implemented a series of experimental projects that integrate theory with practice,and explored mixed teaching methods and diversified examination methods.In this paper,details about software design and programming practice course construction are shown from aspects of teaching content,teaching methods,and examination methods.These course construction experiences will benefit teachers who engage in innovative practical courses in the information and communication engineering discipline.展开更多
＂Communication project budget＂ is a professional course of the communication engineering specialty. Combined with the requirements of the teaching reform, from three aspects of the theoretical teaching, the experime...＂Communication project budget＂ is a professional course of the communication engineering specialty. Combined with the requirements of the teaching reform, from three aspects of the theoretical teaching, the experimental teaching, and the engineering practice, the author carries on the reform and practice, to cultivate the active thinking and practical ability of the students, and the effects of the re-form are fully in line with the orientation of cultivating the highly-skillful and applied talents.展开更多
In order to achieve higher accuracy and lower cost of indoor localization,we propose a positioning method using multiple input and multiple output(MIMO)channel state information(CSI)as a fingerprint.The method can be ...In order to achieve higher accuracy and lower cost of indoor localization,we propose a positioning method using multiple input and multiple output(MIMO)channel state information(CSI)as a fingerprint.The method can be divided into three stages,feature extraction,offline training and online localization.In the feature extraction,the segmented average and principal component analysis(PCA)are used to reduce the data dimension and decrease system complexity.In the offline training,the deep neural network(NN)model is trained to implement the position classification.In the online localization,the data are input into the trained NN model first,and then its output is further processed by weighted k-nearest neighbor(WKNN)technology to estimate the position.Experimental results show that the proposed method can significantly reduce the positioning error compared to other methods and the average error is 1.39m in a complex indoor environment.展开更多
Adder with high efficiency and accuracy is the major requirement for electronic circuit design.Here the optical logic gate based adder circuit is designed for better performance analysis of optical input signals varie...Adder with high efficiency and accuracy is the major requirement for electronic circuit design.Here the optical logic gate based adder circuit is designed for better performance analysis of optical input signals varied with the wavelength.Efficiency of the adder can be improved by increasing the speed of operation,reducing the complexity and power consumption.To maintain the high efficiency with accuracy,a new combination of adder has been proposed and tested in this work.A new adder by combining the logics of Brent Kung,Sklansky and Kogge Stone adders by Tree Grafting Technique(BSKTGT)has been tested along with individual Brent Kung,Sklansky,Kogge Stone,Knowles,Han Carlson and Ladner Fischer adders.All the existing and proposed adders have been designed and tested for efficiency with the help of Cadence platform with 45 nm technology.Efficiency in terms of Size reduction,Power reduction,Power Delay Product(PDP)and accuracy in adding 8 bit,16 bit and 32 bit values had been tested for all the adders and found that the 32 bit BSKTGT adder performed well in all aspects and have produced better efficiency with the power consumption of 52.512426μW with 3.16%of power saving over Brent Kung adder,utilised an area of 631.191 with 8.55%reduction over Kogge Stone Adder,has the cell count of 132 which is 10.61%reduction over Brent Kung Adder and PDP value of 122.6695 J,which is 0.46%less than that of the Han Carlson Adder.展开更多
In this paper,that the embedded systems have been an essential component in communication technology is first introduced.Then,the embedded system knowledge required for an engineer for working in the communication fie...In this paper,that the embedded systems have been an essential component in communication technology is first introduced.Then,the embedded system knowledge required for an engineer for working in the communication field is analyzed.Finally,considerations of our undergraduate program and efforts in embedded system education are presented.展开更多
Short-term traffic flow prediction is one of the essential issues in intelligent transportation systems(ITS). A new two-stage traffic flow prediction method named AKNN-AVL method is presented, which combines an advanc...Short-term traffic flow prediction is one of the essential issues in intelligent transportation systems(ITS). A new two-stage traffic flow prediction method named AKNN-AVL method is presented, which combines an advanced k-nearest neighbor(AKNN)method and balanced binary tree(AVL) data structure to improve the prediction accuracy. The AKNN method uses pattern recognition two times in the searching process, which considers the previous sequences of traffic flow to forecast the future traffic state. Clustering method and balanced binary tree technique are introduced to build case database to reduce the searching time. To illustrate the effects of these developments, the accuracies performance of AKNN-AVL method, k-nearest neighbor(KNN) method and the auto-regressive and moving average(ARMA) method are compared. These methods are calibrated and evaluated by the real-time data from a freeway traffic detector near North 3rd Ring Road in Beijing under both normal and incident traffic conditions.The comparisons show that the AKNN-AVL method with the optimal neighbor and pattern size outperforms both KNN method and ARMA method under both normal and incident traffic conditions. In addition, the combinations of clustering method and balanced binary tree technique to the prediction method can increase the searching speed and respond rapidly to case database fluctuations.展开更多
Prolog is one of the most important candidates to build expert systems and AI-related programs and has potential applications in embedded systems. However, Prolog is not suitable to develop many kinds of components, s...Prolog is one of the most important candidates to build expert systems and AI-related programs and has potential applications in embedded systems. However, Prolog is not suitable to develop many kinds of components, such as data acquisition and task scheduling, which are also crucial. To make the best use of the advantages and bypass the disadvantages, it is attractive to integrate Prolog with programs developed by other languages. In this paper, an IPC-based method is used to integrate backward chaining inference implemented by Prolog into applications or embedded systems. A Prolog design pattern is derived from the method for reuse, whose principle and definition are provided in detail. Additionally, the design pattern is applied to a target system, which is free software, to verify its feasibility. The detailed implementation of the application is given to clarify the design pattern. The design pattern can be further applied to wide range applications and embedded systems and the method described in this paper can also be adopted for other logic programming languages.展开更多
文摘This study presents a comprehensive framework for intelligent management in communication engineering construction,addressing critical challenges posed by 5G/6G network evolution and New Infrastructure policies.Centered on a digital twin-driven architecture,the proposed system integrates space-air-ground monitoring,AIoT-enabled self-organizing networks,and SDN-based elastic resource scheduling to achieve end-to-end lifecycle optimization.A four-dimensional hierarchical model(Perception-Network-Platform-Application)is developed to enhance cross-domain collaboration through intelligent sensing,hybrid networking,and augmented reality decision support.Key innovations include:(1)a dynamic Bayesian network for real-time risk prediction,reducing response time by 40%;(2)a reinforcement learning-driven resource allocation mechanism,improving equipment coordination efficiency by 30%;and(3)a blockchain-enhanced industrial metaverse platform,resolving ecosystem fragmentation via smart contracts and standardized protocols.Empirical validation demonstrates significant gains in project controllability and cost-effectiveness.Future directions extend the framework to 6G reconfigurable surfaces,quantum-secured command systems,and embodied AI construction robots,offering transformative pathways for autonomous and adaptive engineering ecosystems.
基金2024 Education and Teaching Reform Project of Hainan Tropical Ocean University(RHYxgnw2024-16)。
文摘This paper proposes teaching reforms in communication engineering majors,emphasizing the implementation of digital and adaptive teaching methodologies,integrating emerging technologies,breaking free from the constraints of traditional education,and fostering high-caliber talents.The reform measures encompass fundamental data collection,recognition of individual characteristics,recommendation of adaptive learning resources,process-oriented teaching management,adaptive student guidance and early warning systems,personalized evaluation,and the construction of an integrated service platform.These measures,when combined,form a comprehensive system that is expected to enhance teaching quality and efficiency,and facilitate student development.
文摘With the continuous development of China's economic level and science and technology, in recent years, the communication engineering industry has made a great breakthrough. At the same time, there are some problems in China's communication engineering construction, which affect the development of the whole communication engineering industry. Frequent safety accidents have brought great economic influence to construction enterprises and units of construction projects. Therefore, the establishment and implementation of modern security management system in communications enterprises has become an important measure to improve the level of security management in communications engineering. Based on this, this paper firstly briefly analyzes the significance and importance of strengthening the safety management of communication engineering construction, then puts forward the problems existing in the safety management of communication engineering construction, and finally puts forward corresponding solutions to the problems existing in the safety management of communication engineering, so as to provide reference for relevant people to exchange.
文摘Communication engineering is often referred to as "information engineering", which itself is an important branch of electronic engineering, in the environment of the information age, communication engineering as an important medium of information transmission, its construction has practical and far-reaching positive significance for the development of the country and society. Based on the importance of communication, improve the quality of data transmission speed of communication engineering, obviously is a path in the field of communication in the future and most important, and the application of optical fiber cable communication technology can effectively realize the data transmission speed and quality in communication engineering, information interaction under the information age speed and productivity are directly related. Therefore, the research on the application of fiber optic wired communication technology can lay a solid information foundation for the future development of our country to a certain extent, and it will have a huge impact in the field of information engineering and other fields.
文摘With the continuous progress and development of communication technology, the communication industry is constantly updated, and the speed of communication technology and equipment is accelerating. Subsequently, the construction management of communication engineering also needs to be more standardized and informationized, so as to improve the progress, quality, cost, scope, compliance, safety, communication risk and other aspects of communication engineering construction, reducing the labor cost and improving the economic benefits of communication enterprises.
文摘With the continuous development of social economy and science and technology, great changes have taken place in people's way of life and quality. Among them, the communication industry is affected by the economic system, increasing the influence of advanced technology, and paying attention to the quality management of engineering projects. As for the construction and management of communication engineering, while ensuring the smooth project network, the management level of project quality should be improved to maintain the effective development of social life and communication. In this paper, communication engineering projects are studied in detail.
文摘In recent years, China's economy has been developing rapidly, and the communications industry has been further developed by the spring breeze of economic development. Under such a development trend, China has paid more and more attention to the communication construction, and required relevant units to accelerate the completion of communication construction projects, improve the construction quality and efficiency of projects, so as to improve the degree of modernization and informatization of the society, which has brought great pressure to relevant construction units. In addition, China is a vast country in the world, and the construction of communication projects requires a large number of infrastructure points as the foundation, in order to achieve the expected construction effect, which brings a huge workload to the construction units. In this regard, the relevant construction units should pay attention to it, face up to the difficulties, and fully realize the importance of communication engineering construction for the development of our country. In order to ensure the construction efficiency, it can also carry out effective quality control and supervision on the construction of communication engineering. This paper first describes the construction characteristics of communication engineering, then briefly explains several factors that must be paid attention to in the construction process of communication engineering, and finally explains the specific strategy of communication engineering construction quality control in detail, so as to provide relevant professionals with communication and thinking.
文摘With the rapid growth of mobile data traffic and the continuous expansion of various new services, 5G mobile communication technology aiming at meeting the wide application requirements of ultra-high service throughput has become a research hotspot. Full duplex communication technology can double the spectral efficiency. With the emergence of effective self-interference cancellation technology, full duplex technology is widely used. Non orthogonal multiple access technology allows multiple users to transmit information in the same time-frequency resources. Noma technology can simplify the access process and meet the low delay requirements of 5G network.5G technology has become the core technology of communication engineering construction, which can improve the transmission quality of communication engineering and provide strong support for intelligent communication. Affected by many factors, 5G technology is not ideal in communication engineering. In recent years, the expansion of domestic science and technology has continued to accelerate, and the world's development is moving towards intelligence. The application of 5G technology has effectively improved the speed of information and data transmission.
文摘In recent years, China's underground rail transit projects continue to flood out. Underground communication engineering involves a lot of technical points in the actual work, and the difficulty of the actual construction is relatively large, which brings great difficulties and challenges to the subway communication engineering. Only by fully grasping the technical points in the construction, can the effective countermeasures of quality control be fully implemented. Therefore, it is necessary to comprehensively control the key points of subway signal engineering technology and construction, comprehensively improve the quality of subway communication engineering, and ensure the safety and stability of subway in actual operation. In view of the influence of the environment and different factors, it is necessary to make a thorough analysis of the technology of subway communication engineering and strictly control the engineering quality combining with the actual situation. Therefore, in the actual work of subway communication engineering, construction technology plays a crucial role in the subway communication engineering, and its engineering quality control and construction technology will seriously affect the quality of subway in the actual operation.
文摘The influence of modern electronic technology on communication engineering is explained in this paper.Based on the development status of communication engineering,the characteristics and application strategies of modern electronic technology in communication engineering are discussed,including the optimization and improvement of wireless communication system.
基金This work is supported by the Teaching Reform Project of Harbin Engineering University under Grant JG2021B0806.
文摘Innovation and entrepreneurship education is becoming one of the important goals of higher education in China.According to the requirements of the Ministry of Education to deepen the reform of innovation and entrepreneur-ship education in colleges and universities,we propose a core principle of“from basis to comprehensiveness,and then to innovation”to construct the software design and programming practice course in the information and communication engineering discipline.We have integrated specialized knowledge teaching with innovation and entrepreneurship training,implemented a series of experimental projects that integrate theory with practice,and explored mixed teaching methods and diversified examination methods.In this paper,details about software design and programming practice course construction are shown from aspects of teaching content,teaching methods,and examination methods.These course construction experiences will benefit teachers who engage in innovative practical courses in the information and communication engineering discipline.
文摘＂Communication project budget＂ is a professional course of the communication engineering specialty. Combined with the requirements of the teaching reform, from three aspects of the theoretical teaching, the experimental teaching, and the engineering practice, the author carries on the reform and practice, to cultivate the active thinking and practical ability of the students, and the effects of the re-form are fully in line with the orientation of cultivating the highly-skillful and applied talents.
基金the National Natural Science Foundation of China under Grants No.61671367the Key Research and Development Plan of Shaanxi Province under Grant No.2018GY-003+1 种基金the Research Foundation of Science and Technology on Communication Networks Laboratorythe Fundamental Research Funds for the Central Universities.
文摘In order to achieve higher accuracy and lower cost of indoor localization,we propose a positioning method using multiple input and multiple output(MIMO)channel state information(CSI)as a fingerprint.The method can be divided into three stages,feature extraction,offline training and online localization.In the feature extraction,the segmented average and principal component analysis(PCA)are used to reduce the data dimension and decrease system complexity.In the offline training,the deep neural network(NN)model is trained to implement the position classification.In the online localization,the data are input into the trained NN model first,and then its output is further processed by weighted k-nearest neighbor(WKNN)technology to estimate the position.Experimental results show that the proposed method can significantly reduce the positioning error compared to other methods and the average error is 1.39m in a complex indoor environment.
文摘Adder with high efficiency and accuracy is the major requirement for electronic circuit design.Here the optical logic gate based adder circuit is designed for better performance analysis of optical input signals varied with the wavelength.Efficiency of the adder can be improved by increasing the speed of operation,reducing the complexity and power consumption.To maintain the high efficiency with accuracy,a new combination of adder has been proposed and tested in this work.A new adder by combining the logics of Brent Kung,Sklansky and Kogge Stone adders by Tree Grafting Technique(BSKTGT)has been tested along with individual Brent Kung,Sklansky,Kogge Stone,Knowles,Han Carlson and Ladner Fischer adders.All the existing and proposed adders have been designed and tested for efficiency with the help of Cadence platform with 45 nm technology.Efficiency in terms of Size reduction,Power reduction,Power Delay Product(PDP)and accuracy in adding 8 bit,16 bit and 32 bit values had been tested for all the adders and found that the 32 bit BSKTGT adder performed well in all aspects and have produced better efficiency with the power consumption of 52.512426μW with 3.16%of power saving over Brent Kung adder,utilised an area of 631.191 with 8.55%reduction over Kogge Stone Adder,has the cell count of 132 which is 10.61%reduction over Brent Kung Adder and PDP value of 122.6695 J,which is 0.46%less than that of the Han Carlson Adder.
基金Shandong Natural Science Foundation, China (2007ZRB01833)the Project of Education Reform of Qingdao University of Science and Technology 2009
文摘In this paper,that the embedded systems have been an essential component in communication technology is first introduced.Then,the embedded system knowledge required for an engineer for working in the communication field is analyzed.Finally,considerations of our undergraduate program and efforts in embedded system education are presented.
基金Project(2012CB725403)supported by the National Basic Research Program of ChinaProjects(71210001,51338008)supported by the National Natural Science Foundation of ChinaProject supported by World Capital Cities Smooth Traffic Collaborative Innovation Center and Singapore National Research Foundation Under Its Campus for Research Excellence and Technology Enterprise(CREATE)Programme
文摘Short-term traffic flow prediction is one of the essential issues in intelligent transportation systems(ITS). A new two-stage traffic flow prediction method named AKNN-AVL method is presented, which combines an advanced k-nearest neighbor(AKNN)method and balanced binary tree(AVL) data structure to improve the prediction accuracy. The AKNN method uses pattern recognition two times in the searching process, which considers the previous sequences of traffic flow to forecast the future traffic state. Clustering method and balanced binary tree technique are introduced to build case database to reduce the searching time. To illustrate the effects of these developments, the accuracies performance of AKNN-AVL method, k-nearest neighbor(KNN) method and the auto-regressive and moving average(ARMA) method are compared. These methods are calibrated and evaluated by the real-time data from a freeway traffic detector near North 3rd Ring Road in Beijing under both normal and incident traffic conditions.The comparisons show that the AKNN-AVL method with the optimal neighbor and pattern size outperforms both KNN method and ARMA method under both normal and incident traffic conditions. In addition, the combinations of clustering method and balanced binary tree technique to the prediction method can increase the searching speed and respond rapidly to case database fluctuations.
基金supported by the National Natural Science Foundation of China (No.61304111)National Basic Research Program of China (No. 2014CB744904)Fundamental Research Funds for the Central Universities of China (Nos. YWF-14-KKX-001 and YWF-13-JQCJ)
文摘Prolog is one of the most important candidates to build expert systems and AI-related programs and has potential applications in embedded systems. However, Prolog is not suitable to develop many kinds of components, such as data acquisition and task scheduling, which are also crucial. To make the best use of the advantages and bypass the disadvantages, it is attractive to integrate Prolog with programs developed by other languages. In this paper, an IPC-based method is used to integrate backward chaining inference implemented by Prolog into applications or embedded systems. A Prolog design pattern is derived from the method for reuse, whose principle and definition are provided in detail. Additionally, the design pattern is applied to a target system, which is free software, to verify its feasibility. The detailed implementation of the application is given to clarify the design pattern. The design pattern can be further applied to wide range applications and embedded systems and the method described in this paper can also be adopted for other logic programming languages.
