检索结果-内蒙古大学图书馆

IEEE International Conference on Networks

作者： C. Bouras V. Kapoulas A. Gkamas D. Politaki E. Tsanai Press “Diophantus” Computer Technology Institute Patras Greece University Ecclesiastical Academy of Vella Ioannina Greece Computer Engineering and Informatics Dept. University of Patras Patras Greece

Mobile Ad hoc NETworks (MANETs) are becoming more essential to wireless communications due to growing popularity of mobile devices. Many researchers have committed effort to enhance the Multimedia (video) transmission over MANETs. Various algorithms and mechanisms concerning the optimization of multimedia transmission have been presented. In this work we evaluate the effect of using multiple interfaces and multiple channels per node in the performance of already existing MANET routing protocols during video transmission. The evaluation shows that all routing protocols benefit from using multiple interfaces and multiple channels per node, and the video transmission over MANETs is improved.

关键词： Routing protocols Ad hoc networks Mobile computing Streaming media Routing PSNR Video recording

来源：评论

学校读者我要写书评

暂无评论

From sketches to CAM models: Perceiving pockets and steps in single-view wireframe sketches of polyhedral shapes

From sketches to CAM models: Perceiving pockets and steps in...

引用

2013 ACM Conference on Ubiquitous Computing, UbiComp 2013

作者： Plumed, Raquel Company, Pedro Varley, Peter Martin, Ralph Dept. Mechanical Engineering and Construction Universitat Jaume I Castellón de la Plana 12071 Spain Inst. of New Imaging Technology Universitat Jaume I Castellón de la Plana 12071 Spain School of Computer Science and Informatics Cardiff University Cardiff United Kingdom

ISBN: (纸本)9781450322157

We propose the direct production of 3D CSG models from sketches as a way of relieving the user from having to input detailed 3D CAD models. This shortens the CAD/CAM process and simplifies it, allowing non-expert end-users to produce their own designs. Early detection of features in the 2D sketch is a critical step. This paper discusses a general strategy for solving this problem, and then describes our approach for detecting steps and pockets in a 2D line-drawing obtained after vectorising the sketch captured by an input device. Copyright © 2013 ACM.

关键词： computer aided design

来源：评论

学校读者我要写书评

暂无评论

On Reliability Analysis of Leader Election Protocols for Virtual Traffic Lights

On Reliability Analysis of Leader Election Protocols for Vir...

引用

Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshops

作者： Negin Fathollahnejad Emilia Villani Risat Pathan Raul Barbosa Johan Karlsson Dept. of Computer Science and Engineering Chalmers University of Technology Dept. of Mechanical Engineering Instituto Tecnologico de Aeronautica ITA Dept. of Informatics Engineering University of Coimbra

ISBN: (纸本)9781479901807

This paper addresses the problem of leader election in virtual traffic lights. A virtual traffic light (VTL) is a self-organizing traffic control system that allows road vehicles equipped with vehicle-to-vehicle communication facilities to implement the function of a traffic light without the support of a roadside installation. Previous research has shown that it is impossible to construct a leader election protocol that guarantees agreement among the participating vehicles in the presence of massive communication failures. The paper addresses the problem of calculating the probability of disagreement in situations where a large number of protocol messages are lost due to communication interference, so-called communication grey-outs. To this end, we present a probabilistic analysis of a family of simple round-based consensus algorithms that solve the 1-of-n selection problem. We propose to use these algorithms for the core logic of a VTL leader election protocol (LEP). Our analysis shows that the probability of disagreement depends on: i) the number of vehicles involved in the leader election, ii) the number of rounds of message exchange, iii) the probability of message loss, and iv) the decision criterion used by the LEP. We propose an optimistic and a pessimistic decision criterion for the proposed 1-of-n selection algorithms. The analysis encompasses two probabilistic failure models, one for symmetric communication failures and one for asymmetric communication failures.

关键词： Virtual traffic lights Autonomous driving Consensus protocols Reliability analysis

来源：评论

学校读者我要写书评

暂无评论

Accelerating k-12 computational thinking using scaffolding, staging, and abstraction 13

Accelerating k-12 computational thinking using scaffolding, ...

引用

44th ACM Technical Symposium on computer Science Education, SIGCSE 2013

作者： Touretzky, David S. Marghitu, Daniela Ludi, Stephanie Bernstein, Debra Ni, Lijun Computer Science Department Carnegie Mellon University Pittsburgh PA 15213 United States Computer Science and Software Engineering Auburn University Auburn AL 36849 United States Dept. of Software Engineering Rochester Institute of Technology Rochester NY 14623 United States TERC Cambridge MA 02140 United States Georgia Inst. of Technology Atlanta GA 30332-0760 United States

ISBN: (纸本)9781450320306

We describe a three-stage model of computing instruction beginning with a simple, highly scaffolded programming en-vironment (Kodu) and progressing to more challenging frame-works (Alice and Lego NXT-G). In moving between frame-works, students explore the similarities and differences in how concepts such as variables, conditionals, and looping are realized. This can potentially lead to a deeper under-standing of programming, bringing students closer to true computational thinking. Some novel strategies for teach-ing with Kodu are outlined. Finally, we briefly report on our methodology and select preliminary results from a pi-lot study using this curriculum with students ages 10-17, including several with disabilities. Copyright © 2013 ACM.

关键词： Students

来源：评论

学校读者我要写书评

暂无评论

Transfer Learning across Networks for Collective Classification

Transfer Learning across Networks for Collective Classificat...

引用

IEEE International Conference on Data Mining (ICDM)

作者： Meng Fang Jie Yin Xingquan Zhu Centre for Quantum Computation & Intelligent Systems University of Technology Sydney Australia Computational Informatics CSIRO Australia Dept. of Computer & Electrical Engineering and Computer Science Florida Atlantic University USA

ISBN: (纸本)9781479913282

This paper addresses the problem of transferring useful knowledge from a source network to predict node labels in a newly formed target network. While existing transfer learning research has primarily focused on vector-based data, in which the instances are assumed to be independent and identically distributed, how to effectively transfer knowledge across different information networks has not been well studied, mainly because networks may have their distinct node features and link relationships between nodes. In this paper, we propose a new transfer learning algorithm that attempts to transfer common latent structure features across the source and target networks. The proposed algorithm discovers these latent features by constructing label propagation matrices in the source and target networks, and mapping them into a shared latent feature space. The latent features capture common structure patterns shared by two networks, and serve as domain-independent features to be transferred between networks. Together with domain-dependent node features, we thereafter propose an iterative classification algorithm that leverages label correlations to predict node labels in the target network. Experiments on real-world networks demonstrate that our proposed algorithm can successfully achieve knowledge transfer between networks to help improve the accuracy of classifying nodes in the target network.

关键词： Subspace constraints Knowledge engineering Prediction algorithms Convergence Optimization Iterative methods Knowledge transfer

来源：评论

学校读者我要写书评

暂无评论

3D Surfaces Reconstruction of Seafloor Images Using Multiview Camera Based on Image Registration

3D Surfaces Reconstruction of Seafloor Images Using Multivie...

引用

2013 International Conference on Advances in Information technology(ICAIT 2013)

作者： Pulung Nurtantio Andono I Ketut Eddy Purnama Mochamad Hariadi Taichi Watanabe Kunio Kondo Informatics Engineering Dept. Faculty of Computer Science University of Dian Nuswantoro Electrical Engineering Dept. Faculty of Industrial Technology Sepuluh Nopember Institute of Technology School of Media Science Tokyo University of Technology

In this paper, we evaluate the effectiveness of Generalized Procrustes Analysis into an Iterative Closest Point(GPA-ICP) for 3D surface reconstruction of underwater coral reef imagesinstead of using original ICP we use GPA-ICP for final alignment to build 3D modelIn land 3D reconstruction, GPA-ICP is preferable for efficiency and robustnessThis is challenging task to implement GPA-ICP for 3D reconstruction of underwater imagesThis paper generates 3D point cloud of underwater coral reef images from dataset acquired by stereo camera systemThe performance of GPA-ICP is measured by computation time of registration process, visual appearance and Mean Square Error between the point and their closest neighbor compared to the original ICPThe result shows that GPA-ICP is more accurate and faster than the original ICP for 3D surface reconstruction of seafloor images.

关键词： 3D Reconstruction GPA ICP Image Registration Seafloor Images SIFT Stereo Vision

来源：评论

学校读者我要写书评

暂无评论

Emotion detection from “the SMS of the internet”

Emotion detection from “the SMS of the internet”

引用

IEEE Recent Advances in Intelligent Computational Systems (RAICS)

作者： Uma Nagarsekar Aditi Mhapsekar Priyanka Kulkarni Dhananjay R. Kalbande Dept. of Computer Engineering Sardar Patel Inst. of Technology University of Mumbai Mumbai India

Due to the sudden eruption of activity in the social networking domain, analysts, social media as well as general public are drawn to Sentiment Analysis domain to gain invaluable information. In this paper, we go beyond basic sentiment classification (positive, negative and neutral) and target deeper emotion classification of Twitter data. We have focused on emotion identification into Ekman's six basic emotions i.e. JOY, SURPRISE, ANGER, DISGUST, FEAR and SADNESS. We have employed two diverse machine learning algorithms with three varied datasets and analyzed their outcomes. We show how equal distribution of emotions in training tweets results in better learning accuracies and hence better performance in the classification task.

关键词： Feature extraction Accuracy Support vector machines Twitter Training Classification algorithms computers

来源：评论

学校读者我要写书评

暂无评论

A differential method for representing spinal MRI for perceptual-CBIR

A differential method for representing spinal MRI for percep...

引用

18th Iberoamerican Congress on Pattern Recognition, CIARP 2013

作者： Ponciano-Silva, Marcelo Bugatti, Pedro H. Reis, Rafael M. Azevedo-Marques, Paulo M. Nogueira-Barbosa, Marcello H. Traina Jr., Caetano Traina, Agma Juci Machado Department of Computer Science University of São Paulo at São Carlos Brazil Fed. Inst. of Education Science and Technology of the Triângulo Mineiro Brazil Dept. of Computer Engineering Fed. Tech. University of Paraná Brazil School of Medicine of University of São Paulo at Ribeirão Preto Brazil

ISBN: (纸本)9783642418211

Image exams are a fundamental tool in health care for decision making. A challenge in Content-based image retrieval (CBIR) is to provide a timely answer that complies with the specialist's expectation. There are different systems with different techniques to CBIR in literature. However, even with so much research, there are still particular challenges to be overcame, such as the semantic gap. In this paper, we presented a new spinal-image comparison method based on the perception of specialists during his/her analysis of spine lesions. We take advantage of a color extractor and propose a shape descriptor considering the visual patterns that the radiologists use to recognize anomalies in images. The experiments shown that our approach achieved promising results, testifying that the automatic comparison of images should consider all relevant visual aspects and comparisons' criteria, which are defined by the specialists. © Springer-Verlag 2013.

关键词： Magnetic resonance imaging

来源：评论

学校读者我要写书评

暂无评论

Distributed Multi-Robot Coverage using Micro Aerial Vehicles

Distributed Multi-Robot Coverage using Micro Aerial Vehicles

引用

Mediterranean Conference on Control & Automation

作者： A. Renzaglia L. Doitsidis S. A. Chatzichristofis A. Martinelli E. B. Kosmatopoulos Department of Computer Science & Engineering University of Minnesota Dept. of Electronics Technological Educational Institute of Crete Informatics & Telematics Institute Center for Research and Technology-Hellas (ITI-CERTH) INRIA Rhone-Alpes Dept. of Electrical and Computer Engineering Democritus University of Thrace

ISBN: (纸本)9781479909964

In this paper we present a solution to the problem of positioning a team of Micro Aerial Vehicles for a surveillance task in an environment of arbitrary and unknown morphology. The problem is addressed taking into account physical and environmental constraints like limited sensor capabilities and obstacle avoidance. The goal is to maximize the area monitored by the team, by identifying the best configuration of the team members. The proposed method is a distributed extension of our previous work based on the Cognitive Adaptive Optimization (CAO) algorithm. This distributed and scalable approach allows us to obtain coordinated and safe trajectories to accomplish the task in 3D environments. The different formulation of the problem considered in this paper allows also dealing with communication constraints. We provide extensive experimental results using data collected by a team of aerial robots and compare the efficiency of the distributed and centralized approach.

关键词： Micro aerial vehicle Distribute vehicle Obstacle avoidance Aerial robot Unmanned Aerial Vehicle Environments

来源：评论

学校读者我要写书评

暂无评论

Preface

引用

Smart Structures and Systems 2014年第1期14卷 i页

作者： Onoufriou, Toula Berberidis, Kostas Leung, Kin K. Cyprus University of Technology 30 Archbishop Kyprianou Str 3036 Limassol Cyprus Dept. of Computer Engineering and Informatics School of Engineering University of Patras 26500-Rio-Patras Greece Electrical and Electronic Engineering and Computing Departments Imperial College Exhibition Road London SW7 2BT United Kingdom

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：