International Journal of Artificial Intelligence & Applications, Jan 31, 2015
Information or knowledge contained by the texts is structured in a language specific syntactic fo... more Information or knowledge contained by the texts is structured in a language specific syntactic form. They are neither understood nor processed by the computers. They must be organized in a structured form. Structured representation of sentences written in a particular language enables a computer to have a good understanding of the knowledge they contain. Such type of representation is also useful for modelling systems like information retrieval, question-answering, machine learning etc. This paper focuses on extracting knowledge from sentences in a form convenient for manipulation through computers. We are basically concerned with representing these structures of sentences written in Assamese language. Moreover, we have also tried to extract answers to questions from these generated structures. Our primary goal of research is to design and develop a question-answering system for Assamese language which is expected to bring a new era of digital renaissance in the field of Artificial Intelligence for this language.
The Journal of supercomputing/Journal of supercomputing, Apr 4, 2024
The 2D mesh topology-based Network-on-Chip (NoC) is a prevalent structure in System-on-Chip (SoC)... more The 2D mesh topology-based Network-on-Chip (NoC) is a prevalent structure in System-on-Chip (SoC) designs, offering implementation and fabrication benefits. However, increased NoC scale leads to longer communication paths, more hops, and higher end-to-end latency and energy consumption. To mitigate these issues, Wireless NoC (WiNoC) integrates wireless communication, enhancing data rates, energy efficiency, and routing flexibility. Despite several mapping algorithms for NoCs, optimal techniques for hybrid WiNoCs are underexplored. This study proposes two novel application mapping methods for 2D mesh topology-based hybrid WiNoCs, using quadratic programming (QP) and simulated annealing (SA). Our goal is to minimize communication-related energy consumption. We evaluated these methods across various wireless router configurations, benchmarks, and custom application graphs. The QP-based method excels in smaller problems, while the SA-based approach yields optimal or near-optimal results for larger sizes within practical runtimes.
International Journal of Communication Systems, Mar 23, 2022
SummaryThe vast number of smart cloud applications that communicate with the “things” over a vari... more SummaryThe vast number of smart cloud applications that communicate with the “things” over a variety of physical networks and communication protocols contribute to the rise of complexity in Internet of Things (IoT) systems. The diversity of end‐user requirements related to the volume of generated data, its variety, and the velocity of its transmission makes quality of service (QoS) provisioning even more crucial and challenging in IoT. This paper provides a comprehensive and up‐to‐date survey of QoS support in IoT networks and communication protocols. An analysis of the QoS‐aware IoT architectures, layer‐dependent QoS metrics, and network resource optimization methods utilized in IoT systems are given. The limitations of the current state‐of‐the‐art studies for efficient delivery of QoS metrics are discussed. The paper concludes with future research directions on end‐to‐end QoS provisioning in IoT.
ABSTRACT The introduction of the Semantic Web in 2001 lead the way to many new ideas and technolo... more ABSTRACT The introduction of the Semantic Web in 2001 lead the way to many new ideas and technologies in computing. Data handling and sharing gained a semantic level rather than structural, facilitating the development of innovative and more helpful end-user applications. Semantics of Web information is formally defined in ontologies, making it possible for machines to interpret data content more effectively. In this study, we aimed to apply this new technology and create a useful application for an educational center. This paper presents our work, issues we encountered, our approach to resolving those issues, as well as our findings and results.
ABSTRACT Advances in wireless communications and electronics have enabled the development of smar... more ABSTRACT Advances in wireless communications and electronics have enabled the development of smart, multifunctional sensor nodes that are low-cost, low-power, small in size and can communicate in short distances. These miniature sensor nodes have limited capabilities of sensing, measuring, gathering and processing data, and communication, which led to the idea of wireless sensor networks (WSNs), i.e. collections of a large number of densely deployed sensor nodes over the area to be monitored. WSNs offer possibility for a vast number of life-changing applications in numerous areas, such as military, industry, healthcare, emergency management, entertainment, etc. Researchers foresaw long ago that advances in WSN technology would enable its integration with medical technology to provide new opportunities for healthcare such as remote health monitoring, in-home assistance, and collection of vast amounts of data for next-generation clinical trials. Pervasive WSN technology may provide solutions for reducing the costs of healthcare by enabling many beneficial biological, pharmaceutical and medical applications. This paper is a concise survey of relevant concepts, benefits, design issues and requirements, and open research topics for WSNs in healthcare, which is expected to be helpful in terms of giving directions for future work in the field.
Advances in wireless communication, digital systems and micro-electronic-mechanical system techno... more Advances in wireless communication, digital systems and micro-electronic-mechanical system technologies led to the development of wireless sensor networks (WSNs) which are used in various critical real-world applications. The fact that WSNs are low cost and eliminate the need for infrastructure led to their replacing traditional networks in area/event monitoring and tracking applications. WSNs consist of small and resource-limited sensor nodes, due to which several problems arise in the WSN development process. One of these problems is coverage. Providing the best coverage with a minimum number of sensor nodes is an NP-hard problem known as the maximum coverage sensor deployment problem (MCSDP). Genetic Algorithms (GAs) have been proved effective in solving optimization problems in many different disciplines (increasing coverage in WSNs, image processing, route planning, etc.). In this study, a GPU-based parallel GA solution for increasing the coverage of a given homogeneous WSN topology in a 2-D Euclidean area is proposed which is the first time this technique is used and parallelized on GPUs to the best of our knowledge. Finally, performance results of the proposed algorithm are compared to the previous work with the emphasis on the achieved performance improvement.
Internet of Things (IoT) can be seen as a pervasive network of networks: numerous heterogeneous e... more Internet of Things (IoT) can be seen as a pervasive network of networks: numerous heterogeneous entities both physical and virtual interconnected with any other entity or entities through unique addressing schemes, interacting with each other to provide/request all kinds of services. IoT technology is expected to pave the way for groundbreaking applications in a diversity of areas such as healthcare, security and surveillance, transportation, and industry, and integrate advanced technologies of communication, networking, cloud computing, sensing and actuation. Given the enormous number of connected devices that are potentially vulnerable, highly significant risks emerge around the issues of security, privacy, and governance; calling into question the whole future of IoT. IoT applications are expected to affect many aspects of people's lives, bringing about many conveniences; however, if security and privacy cannot be ensured, this can lead to a number of undesired consequences. This survey focuses on the security aspects of IoT, and discusses up-to-date IoT security solutions.
Düşük güç entegre devreler ve kablosuz teknoloji alanındaki son gelişmeler, kablosuz algılayıcı a... more Düşük güç entegre devreler ve kablosuz teknoloji alanındaki son gelişmeler, kablosuz algılayıcı ağlar (KAA) ve Nesnelerin İnterneti (Internet of Things - IoT) üzerinden uzaktan sağlık izleme de dahil olmak üzere, çok çeşitli uygulamalar için kullanılabilecek düşük maliyetli ve hafif algılayıcı düğümlerinin tasarımını sağlamıştır. Algılayıcıların algılama, veri işleme ve iletişim kabiliyetleri olması, bu teknolojiyi kullanarak uzaktan sağlık izleme gibi uygulamaların hayata geçirilmesini mümkün kılmaktadır. Kablosuz algılayıcı teknolojisi, gerçek zamanlı güncellemeler ile ucuz, invaziv olmayan ve sürekli olan sağlık gözetimini sağlayabilmektedir. KAA ve IoT teknolojilerine dayanan sağlık sistemleri, evde ya da mobil sağlık hizmetleri, tıbbî veri aranması, acil tepki olanakları ve daha birçok faydalı biyolojik, farmasötik ve tıbbî uygulamaları sağlayarak, daha kaliteli ve düşük maliyetli sağlık hizmetleri çözümlerini sunmak için bir gereklilik haline gelmiştir. Bu tez çalışmasında, KA...
Advances in wireless communications and electronics have enabled the development of smart, multif... more Advances in wireless communications and electronics have enabled the development of smart, multifunctional sensor nodes that are low-cost, low-power, small in size and can communicate in short distances. These miniature sensor nodes have limited capabilities of sensing, measuring, gathering and processing data, and communication, which led to the idea of wireless sensor networks (WSNs), i.e. collections of a large number of densely deployed sensor nodes over the area to be monitored. WSNs offer possibility for a vast number of life-changing applications in numerous areas, such as military, industry, healthcare, emergency management, entertainment, etc. Researchers foresaw long ago that advances in WSN technology would enable its integration with medical technology to provide new opportunities for healthcare such as remote health monitoring, in-home assistance, and collection of vast amounts of data for next-generation clinical trials. Pervasive WSN technology may provide solutions f...
Shrinking technology sizes of the CMOS circuits makes it possible to place more transistors on a ... more Shrinking technology sizes of the CMOS circuits makes it possible to place more transistors on a single chip at each technology generation. On the other hand, circuits become more vulnerable to radiation effects due to lower supply and threshold voltage levels; thus, the number of transient faults in circuits tends to increase. Moreover, energy reduction techniques also negatively affect the reliability of circuits. Traditional high-level synthesis (HLS) methods usually consider only area and latency along with either energy or reliability. Especially the effect of using different voltage levels on reliability is completely ignored by previous studies. In this paper, we present two new HLS methods for application-specific integrated circuit (ASIC) design under area and timing constraints with the objectives of low energy consumption and high reliability. For the mapping and scheduling steps of HLS, we propose integer linear programming (ILP) and genetic algorithm (GA)-based optimiza...
2017 IEEE 23rd International Conference on Parallel and Distributed Systems (ICPADS), 2017
Advances in wireless communication, digital systems and micro-electronic-mechanical system techno... more Advances in wireless communication, digital systems and micro-electronic-mechanical system technologies led to the development of wireless sensor networks (WSNs) which are used in various critical real-world applications. The fact that WSNs are low cost and eliminate the need for infrastructure led to their replacing traditional networks in area/event monitoring and tracking applications. WSNs consist of small and resource-limited sensor nodes, due to which several problems arise in the WSN development process. One of these problems is coverage. Providing the best coverage with a minimum number of sensor nodes is an NP-hard problem known as the maximum coverage sensor deployment problem (MCSDP). Genetic Algorithms (GAs) have been proved effective in solving optimization problems in many different disciplines (increasing coverage in WSNs, image processing, route planning, etc.). In this study, a GPU-based parallel GA solution for increasing the coverage of a given homogeneous WSN top...
In recent years, fog computing has emerged as a computing paradigm to support the computationally... more In recent years, fog computing has emerged as a computing paradigm to support the computationally intensive and latency-critical applications for resource limited Internet of Things (IoT) devices. The main feature of fog computing is to push computation, networking, and storage facilities closer to the network edge. This enables IoT user equipment (UE) to profit from the fog computing paradigm by mainly offloading their intensive computation tasks to fog resources. Thus, computation offloading and service placement mechanisms can overcome the resource constraints of IoT devices, and improve the system performance in terms of increasing battery lifetime of UE and reducing the total delay. In this paper, we survey the current research conducted on computation offloading and service placement in fog computing-based IoT in a comparative manner.
International Journal of Artificial Intelligence & Applications, Jan 31, 2015
Information or knowledge contained by the texts is structured in a language specific syntactic fo... more Information or knowledge contained by the texts is structured in a language specific syntactic form. They are neither understood nor processed by the computers. They must be organized in a structured form. Structured representation of sentences written in a particular language enables a computer to have a good understanding of the knowledge they contain. Such type of representation is also useful for modelling systems like information retrieval, question-answering, machine learning etc. This paper focuses on extracting knowledge from sentences in a form convenient for manipulation through computers. We are basically concerned with representing these structures of sentences written in Assamese language. Moreover, we have also tried to extract answers to questions from these generated structures. Our primary goal of research is to design and develop a question-answering system for Assamese language which is expected to bring a new era of digital renaissance in the field of Artificial Intelligence for this language.
The Journal of supercomputing/Journal of supercomputing, Apr 4, 2024
The 2D mesh topology-based Network-on-Chip (NoC) is a prevalent structure in System-on-Chip (SoC)... more The 2D mesh topology-based Network-on-Chip (NoC) is a prevalent structure in System-on-Chip (SoC) designs, offering implementation and fabrication benefits. However, increased NoC scale leads to longer communication paths, more hops, and higher end-to-end latency and energy consumption. To mitigate these issues, Wireless NoC (WiNoC) integrates wireless communication, enhancing data rates, energy efficiency, and routing flexibility. Despite several mapping algorithms for NoCs, optimal techniques for hybrid WiNoCs are underexplored. This study proposes two novel application mapping methods for 2D mesh topology-based hybrid WiNoCs, using quadratic programming (QP) and simulated annealing (SA). Our goal is to minimize communication-related energy consumption. We evaluated these methods across various wireless router configurations, benchmarks, and custom application graphs. The QP-based method excels in smaller problems, while the SA-based approach yields optimal or near-optimal results for larger sizes within practical runtimes.
International Journal of Communication Systems, Mar 23, 2022
SummaryThe vast number of smart cloud applications that communicate with the “things” over a vari... more SummaryThe vast number of smart cloud applications that communicate with the “things” over a variety of physical networks and communication protocols contribute to the rise of complexity in Internet of Things (IoT) systems. The diversity of end‐user requirements related to the volume of generated data, its variety, and the velocity of its transmission makes quality of service (QoS) provisioning even more crucial and challenging in IoT. This paper provides a comprehensive and up‐to‐date survey of QoS support in IoT networks and communication protocols. An analysis of the QoS‐aware IoT architectures, layer‐dependent QoS metrics, and network resource optimization methods utilized in IoT systems are given. The limitations of the current state‐of‐the‐art studies for efficient delivery of QoS metrics are discussed. The paper concludes with future research directions on end‐to‐end QoS provisioning in IoT.
ABSTRACT The introduction of the Semantic Web in 2001 lead the way to many new ideas and technolo... more ABSTRACT The introduction of the Semantic Web in 2001 lead the way to many new ideas and technologies in computing. Data handling and sharing gained a semantic level rather than structural, facilitating the development of innovative and more helpful end-user applications. Semantics of Web information is formally defined in ontologies, making it possible for machines to interpret data content more effectively. In this study, we aimed to apply this new technology and create a useful application for an educational center. This paper presents our work, issues we encountered, our approach to resolving those issues, as well as our findings and results.
ABSTRACT Advances in wireless communications and electronics have enabled the development of smar... more ABSTRACT Advances in wireless communications and electronics have enabled the development of smart, multifunctional sensor nodes that are low-cost, low-power, small in size and can communicate in short distances. These miniature sensor nodes have limited capabilities of sensing, measuring, gathering and processing data, and communication, which led to the idea of wireless sensor networks (WSNs), i.e. collections of a large number of densely deployed sensor nodes over the area to be monitored. WSNs offer possibility for a vast number of life-changing applications in numerous areas, such as military, industry, healthcare, emergency management, entertainment, etc. Researchers foresaw long ago that advances in WSN technology would enable its integration with medical technology to provide new opportunities for healthcare such as remote health monitoring, in-home assistance, and collection of vast amounts of data for next-generation clinical trials. Pervasive WSN technology may provide solutions for reducing the costs of healthcare by enabling many beneficial biological, pharmaceutical and medical applications. This paper is a concise survey of relevant concepts, benefits, design issues and requirements, and open research topics for WSNs in healthcare, which is expected to be helpful in terms of giving directions for future work in the field.
Advances in wireless communication, digital systems and micro-electronic-mechanical system techno... more Advances in wireless communication, digital systems and micro-electronic-mechanical system technologies led to the development of wireless sensor networks (WSNs) which are used in various critical real-world applications. The fact that WSNs are low cost and eliminate the need for infrastructure led to their replacing traditional networks in area/event monitoring and tracking applications. WSNs consist of small and resource-limited sensor nodes, due to which several problems arise in the WSN development process. One of these problems is coverage. Providing the best coverage with a minimum number of sensor nodes is an NP-hard problem known as the maximum coverage sensor deployment problem (MCSDP). Genetic Algorithms (GAs) have been proved effective in solving optimization problems in many different disciplines (increasing coverage in WSNs, image processing, route planning, etc.). In this study, a GPU-based parallel GA solution for increasing the coverage of a given homogeneous WSN topology in a 2-D Euclidean area is proposed which is the first time this technique is used and parallelized on GPUs to the best of our knowledge. Finally, performance results of the proposed algorithm are compared to the previous work with the emphasis on the achieved performance improvement.
Internet of Things (IoT) can be seen as a pervasive network of networks: numerous heterogeneous e... more Internet of Things (IoT) can be seen as a pervasive network of networks: numerous heterogeneous entities both physical and virtual interconnected with any other entity or entities through unique addressing schemes, interacting with each other to provide/request all kinds of services. IoT technology is expected to pave the way for groundbreaking applications in a diversity of areas such as healthcare, security and surveillance, transportation, and industry, and integrate advanced technologies of communication, networking, cloud computing, sensing and actuation. Given the enormous number of connected devices that are potentially vulnerable, highly significant risks emerge around the issues of security, privacy, and governance; calling into question the whole future of IoT. IoT applications are expected to affect many aspects of people's lives, bringing about many conveniences; however, if security and privacy cannot be ensured, this can lead to a number of undesired consequences. This survey focuses on the security aspects of IoT, and discusses up-to-date IoT security solutions.
Düşük güç entegre devreler ve kablosuz teknoloji alanındaki son gelişmeler, kablosuz algılayıcı a... more Düşük güç entegre devreler ve kablosuz teknoloji alanındaki son gelişmeler, kablosuz algılayıcı ağlar (KAA) ve Nesnelerin İnterneti (Internet of Things - IoT) üzerinden uzaktan sağlık izleme de dahil olmak üzere, çok çeşitli uygulamalar için kullanılabilecek düşük maliyetli ve hafif algılayıcı düğümlerinin tasarımını sağlamıştır. Algılayıcıların algılama, veri işleme ve iletişim kabiliyetleri olması, bu teknolojiyi kullanarak uzaktan sağlık izleme gibi uygulamaların hayata geçirilmesini mümkün kılmaktadır. Kablosuz algılayıcı teknolojisi, gerçek zamanlı güncellemeler ile ucuz, invaziv olmayan ve sürekli olan sağlık gözetimini sağlayabilmektedir. KAA ve IoT teknolojilerine dayanan sağlık sistemleri, evde ya da mobil sağlık hizmetleri, tıbbî veri aranması, acil tepki olanakları ve daha birçok faydalı biyolojik, farmasötik ve tıbbî uygulamaları sağlayarak, daha kaliteli ve düşük maliyetli sağlık hizmetleri çözümlerini sunmak için bir gereklilik haline gelmiştir. Bu tez çalışmasında, KA...
Advances in wireless communications and electronics have enabled the development of smart, multif... more Advances in wireless communications and electronics have enabled the development of smart, multifunctional sensor nodes that are low-cost, low-power, small in size and can communicate in short distances. These miniature sensor nodes have limited capabilities of sensing, measuring, gathering and processing data, and communication, which led to the idea of wireless sensor networks (WSNs), i.e. collections of a large number of densely deployed sensor nodes over the area to be monitored. WSNs offer possibility for a vast number of life-changing applications in numerous areas, such as military, industry, healthcare, emergency management, entertainment, etc. Researchers foresaw long ago that advances in WSN technology would enable its integration with medical technology to provide new opportunities for healthcare such as remote health monitoring, in-home assistance, and collection of vast amounts of data for next-generation clinical trials. Pervasive WSN technology may provide solutions f...
Shrinking technology sizes of the CMOS circuits makes it possible to place more transistors on a ... more Shrinking technology sizes of the CMOS circuits makes it possible to place more transistors on a single chip at each technology generation. On the other hand, circuits become more vulnerable to radiation effects due to lower supply and threshold voltage levels; thus, the number of transient faults in circuits tends to increase. Moreover, energy reduction techniques also negatively affect the reliability of circuits. Traditional high-level synthesis (HLS) methods usually consider only area and latency along with either energy or reliability. Especially the effect of using different voltage levels on reliability is completely ignored by previous studies. In this paper, we present two new HLS methods for application-specific integrated circuit (ASIC) design under area and timing constraints with the objectives of low energy consumption and high reliability. For the mapping and scheduling steps of HLS, we propose integer linear programming (ILP) and genetic algorithm (GA)-based optimiza...
2017 IEEE 23rd International Conference on Parallel and Distributed Systems (ICPADS), 2017
Advances in wireless communication, digital systems and micro-electronic-mechanical system techno... more Advances in wireless communication, digital systems and micro-electronic-mechanical system technologies led to the development of wireless sensor networks (WSNs) which are used in various critical real-world applications. The fact that WSNs are low cost and eliminate the need for infrastructure led to their replacing traditional networks in area/event monitoring and tracking applications. WSNs consist of small and resource-limited sensor nodes, due to which several problems arise in the WSN development process. One of these problems is coverage. Providing the best coverage with a minimum number of sensor nodes is an NP-hard problem known as the maximum coverage sensor deployment problem (MCSDP). Genetic Algorithms (GAs) have been proved effective in solving optimization problems in many different disciplines (increasing coverage in WSNs, image processing, route planning, etc.). In this study, a GPU-based parallel GA solution for increasing the coverage of a given homogeneous WSN top...
In recent years, fog computing has emerged as a computing paradigm to support the computationally... more In recent years, fog computing has emerged as a computing paradigm to support the computationally intensive and latency-critical applications for resource limited Internet of Things (IoT) devices. The main feature of fog computing is to push computation, networking, and storage facilities closer to the network edge. This enables IoT user equipment (UE) to profit from the fog computing paradigm by mainly offloading their intensive computation tasks to fog resources. Thus, computation offloading and service placement mechanisms can overcome the resource constraints of IoT devices, and improve the system performance in terms of increasing battery lifetime of UE and reducing the total delay. In this paper, we survey the current research conducted on computation offloading and service placement in fog computing-based IoT in a comparative manner.
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