检索结果-内蒙古大学图书馆

21st ACM International Conference on Information and Knowledge Management, CIKM 2012

作者： Li, Daifeng Shuai, Xin Sun, Guozheng Tang, Jie Ding, Ying Luo, Zhipeng Dept. of Computer Science and Technology Tsinghua University Beijing China School of Informatics and Computing Indiana University Bloomington IN United States Dept. of Research Center Tencent Company Beijing China School of Library and Information Science Indiana University Bloomington IN United States Beijing University of Aeronautics and Astronautics Beijing China

ISBN: (纸本)9781450311564

This paper proposes a Topic-Level Opinion Influence Model (TOIM) that simultaneously incorporates topic factor, user opinions and social influence in a unified probabilistic model with two stages learning processes. In the first stage, topic factor and user influence are integrated to generate users' influential relationship based on different topics;in the second stage, users' historical messages and social interaction records are leveraged by TOIM to construct their historical opinions and neighbors' opinion influence through a statistical learning process, which can be further utilized to predict users' future opinions on some specific topics. We evaluate our TOIM on a large-scaled dataset from Tencent Weibo, one of the largest microbloggings website in China. The experimental results show that TOIM can better predict users' opinion than other baseline methods. © 2012 ACM.

关键词： Sentiment analysis

来源：评论

学校读者我要写书评

暂无评论

Random Walkers Based Segmentation Method For Breast Thermography

Random Walkers Based Segmentation Method For Breast Thermogr...

引用

IEEE-EMBS Conference on Biomedical Engineering and Sciences

作者： Mehrdad Moghbel Hajjah Rozi Mahmud Syamsiah Mashohor M. Iqbal Bin Saripan Sensor Technology Laboratory Institute of Advanced Technology Dept. of Informatics and Imaging Faculty of medicine and health sciences UPM Dept. of Computer & Communication Systems Faculty of Engineering UPM

ISBN: (纸本)9781467316644

In breast thermography diagnostic, proper detection and segmentation of the areola area as well as detection of breast boundaries present the biggest challenge. As the boundaries of breasts especially in the upper quadrants are usually not present, this produces a great deal of challenge to segment breasts automatically. Many approaches have been developed to segment the breast in the past such as Snakes, Active Contours and Circular Hough Transforms, but these methods fail to detect the boundaries of the breast with the required level of accuracy especially the upper boundaries of the breast. By utilizing most recent segmentation method which is Random Walkers, the breast can be segmented accurately which in turn will increase the accuracy and the reliability of computer aided detection/diagnosis systems.

关键词： Image segmentation Random walkers Breast thermography Areola detection

来源：评论

学校读者我要写书评

暂无评论

TRAFIL: A tool for enhancing simulation TRAce FILes processing

TRAFIL: A tool for enhancing simulation TRAce FILes processi...

引用

3rd International Conference on Data Communication Networking, DCNET 2012, 7th International Conference on e-Business, ICE-B 2012 and 3rd International Conference on Optical Communication Systems, OPTICS 2012

作者： Bouras, Christos Charalambides, Savvas Kioumourtzis, Georgios Stamos, Kostas Computer Technology Institute and Press University Campus N. Kazantzaki Str. 26504 Rio Greece Computer Engineering and Informatics Dept. University of Patras Patras Greece Technological Educational Institute of Patras Patras Greece Center for Security Studies P. Kanellopoulou 4 10177 Athens Greece

ISBN: (纸本)9789898565235

NS-2 (Network Simulator) is one of the most popular discrete event simulators used for network simulation. Trace files produced by NS-2 provide very useful information for post simulation analysis. This paper presents the architecture and development considerations for a TRAce FILe analysis tool, which intends to simplify the management of trace files generated during network simulations. The tool is focused on NS-2 trace files, but can be extended to handle a variety of simulation trace files formats. Its purpose is to make the execution of a large number of network simulations faster, and the extraction of results from a large amount of data more flexible and productive. TRAFIL introduces a novel way of interpreting, parsing, reading and eventually utilizing NS-2 trace files by using "metafiles" and "sub-metafiles" during the trace file recognition and process procedures, making the overall operations more abstract, substantially efficient and faster than alternative approaches. Furthermore, TRAFIL facilitates the whole trace file analysis task, offering the opportunity to store each trace file as well as every measurement produced for each trace file. The tool aims to aid the analysis of simulation results offering features that other tools in this area have been missing.

关键词： Trace analysis

来源：评论

学校读者我要写书评

暂无评论

QoS-Aware User Cohabitation Coordinator in Cognitive Radio Networks

QoS-Aware User Cohabitation Coordinator in Cognitive Radio N...

引用

IEEE Global Communications Conference

作者： Berk Canberk Ian F. Akyildiz Sema Oktug Dept. of Computer Engineering Computer and Informatics Faculty Istanbul Technical University Broadband Wireless Networking Laboratory School of Electrical and Computer Engineering Georgia Institute of Technology

ISBN: (纸本)9781467309202

In Cognitive Radio (CR) Networks, the licensed but vacant spectrum bands are shared by the unlicensed users (CR users) in an opportunistic manner. The CR users should operate and cohabit in the licensed bands without causing any interference to the Primary Users (PUs). This CR user cohabitation which is managed by a spectrum Coordinator, enables several design challenges. Therefore, A User Cohabitation Coordinator, UCC, should be designed considering the heterogeneous Quality of Service (QoS) requirements for the CR users and the short-term fluctuations in the available licensed spectrum bands. Moreover, the spectrum coordination among the CR network operators for CR users should also be considered by the UCC for an effective and fair spectrum sharing. Considering these challenges, the main contribution of this paper is to design a QoS-based spectrum coordinator for CR user cohabitation in order to achieve high throughput and fairness. The proposed UCC uses the first-difference filter clustering and correlation based PU modeling to integrate the fluctuations of the PU activities into the spectrum sharing. The UCC characterizes the QoS requirements of CR users by adopting queuing theoretic models. The proposed scheme enables the cohabitation of the CR operators dynamically. The evaluations demonstrate that the proposed UCC provides high throughput while maintaining the fairness in the CR networks.

关键词： Cohabitation chromium ULTRA CLEAN COAL Cognitive radio Coordinator Spectra Consumers Radio networks

来源：评论

学校读者我要写书评

暂无评论

Articulated motion segmentation of point clouds by group-valued regularization

Articulated motion segmentation of point clouds by group-val...

引用

5th Eurographics Workshop on 3D Object Retrieval, EG 3DOR 2012

作者： Rosman, G. Bronstein, A.M. Bronstein, M.M. Kimmel, R. Dept. of Computer Science Technion - Israel Institute of Technology Haifa 32000 Israel School of Electrical Engineering Faculty of Engineering Tel Aviv University Ramat Aviv 69978 Israel Institute of Computational Science Faculty of Informatics Universitá della Svizzera italiana CH - 6904 Lugano Switzerland

ISBN: (纸本)9783905674361

Motion segmentation for articulated objects is an important topic of research. Yet such a segmentation should be as free as possible from underlying assumptions so as to fit general scenes and objects. In this paper we demonstrate an algorithm for articulated motion segmentation of 3D point clouds, free of any assumptions on the underlying model and yet firmly set in a well-defined variational framework. Results on scanned images show the generality of the proposed technique and its robustness to scanning artifacts and noise. © The Eurographics Association 2012.

关键词： Motion analysis

来源：评论

学校读者我要写书评

暂无评论

CP-driven Modelling for Multi-modal Cyclic Transport Systems

引用

IFAC Proceedings Volumes 2012年第6期45卷 339-344页

作者： G. Bocewicz R. Wójcik Z. Banaszak Dept. of Computer Science and Management Koszalin University of Technology Sniadeckich 2 75-453 Koszalin Poland Institute of Computer Engineering Control and Robotics Wrocław University of Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland Dept. of Business Informatics Warsaw University of Technology Narbutta 85 02-524 Warsaw Poland

This paper concerns the domain of the multimodal transportation systems composed of buses, trains, trams and subways lines and focuses on the scheduling problems encountered in these systems. Transportation Network Infrastructure (TNI) can be modeled as a network of lines providing cyclic routes for particular kinds of stream-like moving transportation means. Lines are connected by common shared change stations. Depending on TNI timetabling the time of the trip of passengers following different itineraries may dramatically differ, e.g. the same distances along the north-south, and east-west directions may require different travel time. So, the mine question regards of TNI schedulability, e.g. the guarantee the same distances in arbitrarily assumed directions will require approximate traveled time. Considered timetabling problem belongs to NP-hard ones. The declarative model of TNI enabling to formulate cyclic scheduling problem in terms of the constraint satisfaction one is our main contribution. At last, the simulated results manifest the promising properties of the proposed model.

关键词： cyclic scheduling multimodal transport system multimodal processes declarative modeling constraints programming

来源：评论

学校读者我要写书评

暂无评论

Ethologically Inspired Human-Robot Communication for Monitoring Support System in Intelligent Space

引用

IFAC Proceedings Volumes 2012年第22期45卷 58-63页

作者： Takuya Ichikawa Wataru Beppu Szilveszter Kovács Peter Korondi Hideki Hashimoto Mihoko Niitsuma Dept. of Precision Mechanics Chuo University Tokyo Japan Department of Automation University of Miskolc Miskolc Hungary Computer and Automation Research Institute of the Hungarian Academy of Sciences Dept. of Mechatronics Optics and Applied Informatics Budapest University of Technology and Economics Budapest Hungary Dept. of Electrical electronic and communication engineering Chuo University Tokyo Japan

This paper presents human-robot communication for a monitoring support system in an Intelligent Space. An Intelligent Space (iSpace) is a space in which many intelligent devices are installed to observe the user's environment. In this paper, we apply the iSpace observation function to a monitoring system used for maintaining the safety of elderly persons receiving home-care support. In addition, we use a mobile robot as a tool to deliver monitoring results to care assistants. We focus on an ethological approach for designing robot behaviors for human-robot communication. The implementation of these robot behaviors based on an ethological approach, and the results of an experiment conducted to evaluate these behaviors, are then presented.

关键词： human-robot communication Intelligent Space ethology

来源：评论

学校读者我要写书评

暂无评论

Ontology-guided approach to retrieving disease manifestation images for health image base construction

Ontology-guided approach to retrieving disease manifestation...

引用

2012 IEEE 2nd Conference on Healthcare informatics, Imaging and Systems Biology, HISB 2012

作者： Chen, Yang Ren, Xiaofeng Zhang, Guo-Qiang Xu, Rong Dept. of Electrical Engineering and Computer Engineering Case Western Reserve University Cleveland OH 44106-7071 United States Intel Science and Technology Center on Pervasive Computing Seattle WA 98195 United States Division of Medical Informatics Case Western Reserve University Cleveland OH 44106-7291 United States

ISBN: (纸本)9780769549217

Building a comprehensive medical image database, in the spirit of the UMLS, can be beneficial for assisting diagnosis, patient education and self-care. However, a highly curated, comprehensive image database is difficult to collect as well as to annotate. We present an approach to combine visual object detection technologies with medical ontology to automatically mine web photos and retrieve a large number of disease manifestation images with minimal manual labeling. Comparing to a supervised approach, our ontology-guided approach reduces manual labeling effort to 1/10 on a variety of eye/ear/mouth diseases and improves the precision of retrieval by over 10% in many cases. © 2012 IEEE.

关键词： Ontology

来源：评论

学校读者我要写书评

暂无评论

A bisimulation-based method of concept learning for knowledge bases in description logics

A bisimulation-based method of concept learning for knowledg...

引用

3rd Symposium on Information and Communication technology, SoICT 2012

作者： Ha, Quang-Thuy Hoang, Thi-Lan-Giao Nguyen, Linh Anh Nguyen, Hung Son Szalas, Andrzej Tran, Thanh-Luong Faculty of Information Technology College of Technology Vietnam National University 144 Xuan Thuy Hanoi Viet Nam Department of Information Technology College of Sciences Hue University 77 Nguyen Hue Hue city Viet Nam Faculty of Mathematics Informatics and Mechanics University of Warsaw Banacha 2 02-097 Warsaw Poland Dept. of Computer and Information Science Linkoping University SE-581 83 Linkoping Sweden

ISBN: (纸本)9781450312325

We develop the first bisimulation-based method of concept learning, called BBCL, for knowledge bases in description logics (DLs). Our method is formulated for a large class of useful DLs, with well-known DLs like ALC, SHIQ, SHOIQ, SROIQ. As bisimulation is the notion for characterizing indiscernibility of objects in DLs, our method is natural and very promising. Copyright © 2012 ACM.

关键词： Data description

来源：评论

学校读者我要写书评

暂无评论

Concept learning for description logic-based information systems

Concept learning for description logic-based information sys...

引用

4th International Conference on Knowledge and Systems Engineering, KSE 2012

作者： Tran, Thanh-Luong Ha, Quang-Thuy Hoang, Thi-Lan-Giao Nguyen, Linh Anh Nguyen, Hung Son Szalas, Andrzej Department of Information Technology College of Sciences Hue University 77 Nguyen Hue Hue City Viet Nam Faculty of Information Technology College of Technology Vietnam National University 144 Xuan Thuy Hanoi Viet Nam Faculty of Mathematics Informatics and Mechanics University of Warsaw Banacha 2 02-097 Warsaw Poland Dept. of Computer and Information Science Linköping University SE-581 83 Linköping Sweden

ISBN: (纸本)9780769547602

The work [1] by Nguyen and Szalas is a pioneering one that uses bisimulation for machine learning in the context of description logics. In this paper we generalize and extend their concept learning method [1] for description logic-based information systems. We take attributes as basic elements of the language. Each attribute may be discrete or numeric. A Boolean attribute is treated as a concept name. This approach is more general and much more suitable for practical information systems based on description logic than the one of [1]. As further extensions we allow also data roles and the concept constructors "functionality" and "unquantified number restrictions". We formulate and prove an important theorem on basic selectors. We also provide new examples to illustrate our approach. © 2012 IEEE.

关键词： Information systems

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：