检索结果-内蒙古大学图书馆

Artificial Intelligence and Robotics (IRANOPEN)

作者： Meisam Teimouri Mostafa E. Salehi Mohammad Reza Meybodi Mechatronics Research Lab. Qazvin Branch Qazvin Iran Computer Engineering Dep. Amir Kabir University of Technology Tehran Iran

ISBN: (纸本)9781509021703

Self-localization is the process of estimating the robot position exploiting noisy measurements. Since localization is a key issue for soccer playing robots, some probabilistic approaches have been developed over last years to address it. Methods based on Monte Carlo Localization (MCL) show good ability in dealing with kidnap problem, however, most of them are unstable with limited number of samples. On the other hand, Kalman filter extensions are among the best light weight estimators for position tracking. Their drawback is that they are unimodal and can't be used for global and kidnaped problems. Combining the advantages of these two approaches can lead to a valuable method. In this paper we propose a new hybrid localization method that utilizes the MCL and UKF to reach a stable, multimodal, and low weight localization method. The advantages of our method are evaluated in several experiments.

关键词： Robots Weight measurement Read only memory

来源：评论

学校读者我要写书评

暂无评论

Smart World of Internet of Things (IoT) and Its Security Concerns

Smart World of Internet of Things (IoT) and Its Security Con...

引用

IEEE/ACM Int'l Conference on & Int'l Conference on Cyber, Physical and Social Computing (CPSCom) Green Computing and Communications (GreenCom)

作者： Jonathan Charity Talwana Huang Jian Hua East China University of Science and Technology Shanghai Shanghai CN Dep. of Computer Science and Information Engineering East China University of Science Technology Shanghai China

ISBN: (纸本)9781509058815

Due to increasing number of internet users, popularity of Broadband Internet also increasing. Hence the connection cost should be decrease due to Wi Fi connectivity and built-in sensors in devices as well the maximum number of devices should be connected through a common medium. To meet all these requirements, the technology so called Internet of Things is evolved. Internet of Things (IoT) can be considered as a connection of computing devices like smart phones, coffee maker, washing machines, wearable device with an internet. IoT create network and connect "things" and people together by creating relationship between either people-people, people-things or things-things. As the number of device connection is increased, it increases the Security risk. Security is the biggest issue for IoT at any companies across the globe. Furthermore, privacy and data sharing can again be considered as a security concern for IoT. Companies, those who use IoT technique, need to find a way to store, track, analyze and make sense of the large amounts of data that will be generated. Few security techniques of IoT are necessary to implement to protect your confidential and important data as well for device protection through some internet security threats.

关键词： Internet of Things Security Intelligent sensors Wireless communication Real-time systems

来源：评论

学校读者我要写书评

暂无评论

Optimized fast Walsh-Hadamard transform on OpenCL-GPU and OpenCL-CPU

Optimized fast Walsh-Hadamard transform on OpenCL-GPU and Op...

引用

Workshops on Image Processing Theory, Tools and Applications, IPTA

作者： Pedro M. M. Pereira Patricio Domingues Nuno M. M. Rodrigues Sergio M. M. Faria Gabriel Falcao Instituto de Telecomunicações Portugal School of Technology and Management Polytechnic Institute of Leiria Portugal Dep. of Electrical and Computer Engineering University of Coimbra Portugal

ISBN: (纸本)9781467389112

The Walsh-Hadamard transform plays a major role in many image and video coding algorithms. In one hand, its intensive use in these algorithms makes its acceleration a challenge, in order to speed-up the algorithm execution. On the other hand, the available fast implementations are not efficient across different platforms. In this work, a parallel-based implementation of the WHT is proposed for CPU and GPU platforms using the OpenCL standard. OpenCL achieves portability at code level, but its performance suffers when the same code is used for CPUs and GPUs. To achieve top performance, we propose two WHT versions: OpenCL-GPU for GPUs and OpenCL-CPU for CPUs. Broadly, OpenCL-GPU executed on a GPU runs faster than OpenCL-CPU executed on a multicore CPU, with speedups that range from 120.87 to 1016.35. However, OpenCL-GPU performance drops substantially when ran on a multicore CPU machine, where OpenCL-CPU achieves higher performance, as it exploits the OpenCL support for SIMD instructions.

关键词： Graphics processing units Transforms Multicore processing Instruction sets Parallel processing Signal processing algorithms Standards

来源：评论

学校读者我要写书评

暂无评论

Evaluating flexibility degrees in optical networks

Evaluating flexibility degrees in optical networks

引用

Optical Fiber Communication Conference, OFC 2015

作者： Christodoulopoulos, Konstantinos Varvarigos, Emmanouel Manos Computer Engineering and Informatics Dep. University of Patras Computer Technology Institute and Press -Diophantus Patra Greece

We consider an IP over flexgrid network and present a joint IP routing, distance-adaptive routing and spectrum allocation formulation. We evaluate the performance of fixed- and flex-grid switches, fixed transponders, ... 详细信息

ISBN: (纸本)9781557529374

关键词： Optical fibers

来源：评论

学校读者我要写书评

暂无评论

LDPC codes and iterative decoding over symbol-tuple error channels

LDPC codes and iterative decoding over symbol-tuple error ch...

引用

International Symposium on Turbo Codes and Related Topics

作者： Kenta Kasai Masanori Hirotomo Masakatu Morii Dep. of Communications and Computer Engineering Tokyo Institute of Technology Tokyo Japan Dept. of Information Science Saga University Saga Japan Dept. of Electrical and Electronic Engineering Kobe University Kobe Japan

This paper deals with symbol-pair error channels. First, we generalize the channels to symbol-tuple error channels whose read length is D. Then, we derive a message passing algorithm for decoding LDPC codes over the generalized channels. Furthermore, we investigate the Hamming distance distributions of LDPC codes in terms of D symbol-tuple metric.

关键词： Parity check codes Decoding Hamming weight Block codes Couplings Error analysis

来源：评论

学校读者我要写书评

暂无评论

Comparison of Detailed Occupancy Profile Generative Methods to Published Standard Diversity Profiles

Comparison of Detailed Occupancy Profile Generative Methods ...

引用

Symposia and Workshops on Ubiquitous, Autonomic and Trusted Computing, UIC-ATC

作者： Dimosthenis Ioannidis Marina Vidaurre-Arbizu César Martín-Gómez Stelios Krinidis Anna Adamopoulou Amaia Zuazua-Ros Dimitrios Tzovaras Spiridon Likothanassis Computer Engineering and Informatics University of Patras Greece Information Technologies Institute Centre for Research and Technology Hellas Thermi-Thessaloniki Greece Dep. of Construction Building Services and Structures Universidad de Navarra Pamplona Spain

Knowledge of the actual occupancy of a building is a main research interest for several domains. Building energy performance simulation software considers occupancy through the use of diversity profiles usually contained in predesigned templates. This paper aims to explore the extent of possible discrepancies between standard predefined occupancy diversity profiles, profiles extracted by business process modelling, profiles generated from real on field occupancy measurements. Occupancy measurements are obtained utilizing a novel robust, highly accurate real-time occupancy extraction system which is based on a dep.h cameras network. Results show that the incorporation of real accurate occupancy data, the appropriate understanding of the business processes that take place in building spaces have the potential to significantly enhance current Building Performance Simulation (BPS) software tools.

关键词： Buildings Business Schedules Cameras Standards Data mining Sensors

来源：评论

学校读者我要写书评

暂无评论

Implementation of density functional theory method on object-oriented programming (C++) to calculate energy band structure using the projector augmented wave (PAW)

引用

Journal of Physics: Conference Series 2017年第1期853卷

作者： E Alfianto F Rusydi N D Aisyah R N Fadilla H K Dipojono M A Martoprawiro Dep. of Computer Systems Institut Teknologi Adhi Tama Surabaya Jl Arif Rachman Hakim 100 Surabaya Indonesia. Theoretical Physics Research Group Dep. of Physics Fac. of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya Indonesia 60115 Laboratory of Computational Material Design Research Group of Engineering Physics Institut Teknologi Bandung Jl Ganesha 10 Bandung Indonesia 40132 Inorganic and Physical Chemistry Division Dep. of Chemistry Institut Teknologi Bandung Jl Ganesha 10 Bandung Indonesia 40132

This study implemented DFT method into the C++ programming language with object-oriented programming rules (expressive software). The use of expressive software results in getting a simple programming structure, which is similar to mathematical formula. This will facilitate the scientific community to develop the software. We validate our software by calculating the energy band structure of Silica, Carbon, and Germanium with FCC structure using the Projector Augmented Wave (PAW) method then compare the results to Quantum Espresso calculation's results. This study shows that the accuracy of the software is 85% compared to Quantum Espresso.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The tradeoff of accuracy with different landmarks with manifold learning

The tradeoff of accuracy with different landmarks with manif...

引用

IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Zezhong Zheng Chengjun Pu Mingcang Zhu Zhiqin Huang Yong He Yicong Feng Yufeng Lu Zhenlu Yu Shengli Wang Shijie Yu Jiang Li Ministry of Land and Resources of the China Chengdu Univ. of Technology Chengdu Sichuan PRC State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan Univ. Wuhan Hubei PRC School of Resources and Environment Univ. of Electronic Science and Technology of China Chengdu Sichuan PRC Guangxi Key Laboratory for Spatial Information and Geomatics Guilin Guangxi PRC Land and Resources Dep. of Sichuan Province Chengdu Sichuan PRC Land and Resource Dep. of Sichuan Province Information Center Chengdu Sichuan PRC Sichuan Institute of Geo-Environment Monitoring Chengdu Sichuan PRC Dep. of Electrical and Computer Engineering Old Dominion Univ. Norfolk VA USA

ISBN: (纸本)9781509033331

High-dimensional data such as hyperspectral images contain abundant information of surface radiation. But the massive redundant information makes it complex to be utilized conveniently. To solve this problem, a manifold learning dimensionality reduction framework for hyperspectral image is proposed. Firstly, statistical sampling methods were used to sample a subset of data points as landmarks. A skeleton of the manifold was then identified basing on the landmarks. The remaining data points were then inserted into the skeleton by Locally Linear Embedding algorithm. At last, original data sets and data sets reduced with different manifold learning approaches were classified by KNN classifier to evaluate the performance of the proposed framework. The framework was tested on AVIRIS Salinas-A dataset. The experimental results showed that the tradeoff of accuracy with different landmarks is of great significant. Insufficient landmarks lead to low accuracy and excess landmarks may spend a considerable amount of time.

关键词： Manifolds Hyperspectral imaging Skeleton Algorithm design and analysis Training

来源：评论

学校读者我要写书评

暂无评论

A Smart Fuzzing Method for Detecting Heap-Based Buffer Overflow in Executable Codes

A Smart Fuzzing Method for Detecting Heap-Based Buffer Overf...

引用

Pacific Rim International Symposium on dep.ndable Computing

作者： Maryam Mouzarani Babak Sadeghiyan Mohammad Zolfaghari Dep. of Computer Engineering & Information Technology Amirkabir University of Technology Tehran Iran Dep. of Electronic & Computer Engineering Isfahan University of Technology Isfahan Iran

ISBN: (纸本)9781467393775

This paper presents a new concolic execution-based smart fuzzer for detecting heap-based buffer overflow in the executable codes. The proposed fuzzer executes the target program with concrete input data and calculates the constraints of the executed path symbolically. The path constraints are used to generate test data that traverse new execution paths in the target program. For each executed path, the fuzzer also calculates heap-based buffer overflow constraints. These constraints determine what input data may cause heap-based buffer overflow in the executed path. By combining the path and vulnerability constraints new test data are generated, if possible, that traverse a specific execution path and activate specific vulnerability in that path. We implemented the proposed smart fuzzer as a plug-in for Valgrind framework. The implemented fuzzer is tested on different groups of test programs. The experiments demonstrate that the fuzzer can detect the vulnerabilities in these programs accurately.

关键词： Concrete Instruments Software Resource management computers Electronic mail Testing

来源：评论

学校读者我要写书评

暂无评论

The manifold learning for dimensionality reduction with hyperspectral image

The manifold learning for dimensionality reduction with hype...

引用

IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Zezhong Zheng Pengxu Chen Mingcang Zhu Zhiqin Huang Yong He Yicong Feng Yufeng Lu Zhenlu Yu Shijie Yu Shengli Wang Jiang Li Ministry of Land and Resources of the China Chengdu Univ. of Technology Chengdu Sichuan PRC State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan Univ. Wuhan Hubei PRC School of Resources and Environment Univ. of Electronic Science and Technology of China Chengdu Sichuan PRC Guangxi Key Laboratory for Spatial Information and Geomatics Guilin Guangxi PRC Land and Resources Dep. of Sichuan Province Chengdu Sichuan PRC Land and Resource Dep. of Sichuan Province Information Center Chengdu Sichuan PRC Sichuan Institute of Geo-Environment Monitoring Chengdu Sichuan PRC Sichuan Institute of Geo-Environment Monitoring Chengdu China 610081 Dep. of Electrical and Computer Engineering Old Dominion Univ. Norfolk VA USA

Hyperspectral remote sensing image (HSI) consists of hundreds of bands that contain rich space, radiation and spectral information. The high-dimensional data can also lead to the curse of dimensionality problem making it difficult to be used effectively. In this paper, we proposed a manifold learning algorithm to reduce the dimensionality for HSI data. For high dimensional datasets with continuous variables, it is often the case that the data points are arranged along with low dimensional structures, named manifolds, in the high dimensional space. Manifold learning aims to identifying those special low dimensional structures for subsequent usage such as classification or regression. However, many manifold learning algorithms perform an eigenvector analysis on a data similarity matrix whose size is N×N, where N is the number of data points. The memory complexity of the analysis is at least O(N 2 ) that is not feasible for a regular computer to compute or storage for very large datasets. To solve this problem, we used statistical sampling methods to sample a subset of data points as landmarks. A skeleton of the manifold was then identified based on the landmarks. The remaining data points were then inserted into the skeleton by Locally Linear Embedding (LLE). We tested our algorithm on AVIRIS Salinas-A data set. The experimental results showed that the HSI dataset could be reduced to a lower-dimensional space for land use classification with good performance, and the main structure was preserved well.

关键词： Manifolds Hyperspectral imaging Skeleton Principal component analysis Classification algorithms Feature extraction

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：