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Pattern recognition using affine and position invariant in frequency domain

Pattern recognition using affine and position invariant in f...

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Joint 5th International Conference on Soft Computing and Intelligent systems and 11th International Symposium on Advanced Intelligent systems, SCIS and ISIS 2010

作者： Naka, Hidetaka Yue, Bao Nakata, Takavuki Department of Information Systems Engineering Tovama Prefectural University Japan Faculty of Knowledge Engineering Tokyo City University Japan

In a 3D environment, when a 2D figure is pho- tographed from different camera angles, the pictures have a relation that approximates an affine transformation. Detecting an affine transformation is an important problem in the area of computer vision. The log-polar transform is known to be a model of the central-fovea visual sensor in a creature's vision. One study described a method to detect the affine parameter by using a log-polar transform: however, this transform is not invariant to obiect position. so it is necessary to find beforehand the corresponding characteristic point. In this studv. a new log-polar transform method which is invariant to obiect position chance and affine transform is described. One amplitude feature in the frequency domain, the orientation of the 2D figure is retained but chance of position is not retained, so the orientation can be detected regardless of the position of the figure. By combination with edge extraction, the affine parameter can be detected with little effect by a background chance.

关键词： Affine transforms

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SLA validation in layered cloud infrastructures

SLA validation in layered cloud infrastructures

引用

7th International Workshop on Economics of Grids, Clouds, systems and Services, GECON 2010

作者： Ul Haq, Irfan Brandic, Ivona Schikuta, Erich Department of Knowledge and Business Engineering University of Vienna Austria Distributed Systems Group Information Systems Institute Vienna University of Technology Vienna Austria

ISBN: (纸本)9783642156809

Cloud computing brings in a novel paradigm to foster IT-based service economy in scalable computing infrastructures by allowing guaranteed on-demand resource allocation with flexible pricing models. Scalable computing infrastructures not only require autonomous management abilities but also the compliance to users’ requirements through Service Level Agreements (SLAs). Such infrastructures should automatically respond to changing components, workload, and environmental conditions as well as prevent violations of agreed SLAs. The essential requirements for SLA-based orchestration of services include agile component-based infrastructure to support these orchestrations;proactive validation of SLAs to prevent violations;and business enabling requirements including trust, privacy and breach management to address penalty enforcement, renegotiation and recovery. In this paper we outline a systematic approach that weaves together three different SLA management models, which cater the above mentioned issues by localizing and addressing them at different but interrelated scopes pertaining to resource, infrastructure, and business domains. In our framework Cloud components (e.g., meta negotiator, broker, automatic service deployer) are loosely coupled using SLAs and can be exchanged on demand considering current load, systems failures, and the whole Cloud ecosystem. Thereafter, SLAs are validated based on high level goals (e.g., business rules, VO policies) ensuring trust, privacy, and breach management in layered Cloud infrastructures. © Springer-Verlag Berlin Heidelberg 2010.

关键词： Economics

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Detecting Hot Events from Web Search Logs

Detecting Hot Events from Web Search Logs

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11th International Conference on Web-Age information Management (WAIM 2010)

作者： Gu, Yingqin Cui, Jianwei Liu, Hongyan Jiang, Xuan He, Jun Du, Xiaoyong Li, Zhixu Key Labs. of Data Engineering and Knowledge Engineering Ministry of Education China School of Information Renmin University of China Beijing 100872 China Department of Management Science and Engineering Tsinghua University Beijing 100084 China

ISBN: (纸本)9783642142451

Detecting events from web resources is a challenging task, attracting many attentions in recent years. Web search log is an important data source for event detection because the information it contains reflects users' activities and interestingness to various real world events. There are three major issues for event detection from web search logs: effectiveness, efficiency and the organization of detected events. In this paper, we develop a novel Topic and Event Detection method, TED, to address these issues. We first divide the whole data into topics for efficiency consideration, and then incorporate link information, temporal information and query content to ensure the quality of detected events. Finally, events detected are organized through the proposed interestingness measure as well as topics they belong to. Experiments are conducted on a commercial search engine log. The results demonstrate that our method can effectively and efficiently detect hot events and give a meaningful organization of them.

关键词： Event detection click-through data efficient algorithm

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VAN: Vehicle-assisted shortest-time path navigation

VAN: Vehicle-assisted shortest-time path navigation

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2010 IEEE 7th International Conference on Mobile Adhoc and Sensor systems, MASS 2010

作者： Chen, Wenping Zhu, Sencun Li, Deying School of Information Key Laboratory of Data Engineering and Knowledge Engineering Renmin University of China Beijing China Department of Computer Science and Engineering Pennsylvania State University University Park PA United States

ISBN: (纸本)9781424474882

Traffic congestion is a very serious problem in large cities. With the number of vehicles increasing rapidly, especially in cities whose economy is booming, the situation is getting even worse. In this paper, by leveraging the techniques of Vehicular Ad hoc Networks (VANETs) we present a dynamic navigation protocol called VAN for individual vehicles to find the shortest-time paths toward their given destinations. Specifically, a vehicle initiates a number of queries, which are routed by VANETs along different paths toward its destination. During query forwarding, the real-time road traffic information in each road segment is aggregated from multiple participating vehicles and returned to the source after the query reaches the destination. This information enables the source to calculate the shortest-time path. We also propose two forwarding optimization methods to reduce communication costs and an error handling mechanism to deal with abnormal circumstances. To evaluate its performance, we use the real traffic data of Beijing, including 2,308 road segments at two different times. Our simulation results demonstrate that our protocol, on average, could save around 30% driving time, compared to traveling along the shortest distance paths. ©2010 IEEE.

关键词： Vehicles

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LOTED: Exploiting linked data in analyzing European Procurement notices

LOTED: Exploiting linked data in analyzing European Procurem...

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1st Workshop on knowledge Injection into and Extraction from Linked data, KIELD 2010

作者： Valle, Francesco D'Aquin, Mathieu Di Noia, Tommaso Motta, Enrico Technical University of Bari Electrical and Electronics Engineering Department Information Systems Research Group Italy Knowledge Media Institute Open University Milton Keynes United Kingdom

The world of procurements and eProcurement generates daily large amounts of data, that represent knowledge of great economical value both for individual companies and for public organisations wishing to achieve a better understanding of a given market. However, such data remains dificult to explore and analyze as it is being kept isolated from other sources of knowledge, in dedicated systems. In this paper, we present an ongoing work on extracting and linking data from the European 'Tenders Electronic Daily' system, which publishes approximately 1,500 tenders five times a week. We specifically show how such information is dynamically extracted and linked to external datasets, and how the created links enrich the original data, introducing new perspectives to its analysis. We show tools we developed to support such 'linked data-based' analysis of data, and report on the lessons learnt from our experience in building a linked data application with potential for real-life use in knowledge extraction.

关键词： Linked data

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ParaCube: A scalable OLAP model based on distributed aggregate computing with sibling cubes

ParaCube: A scalable OLAP model based on distributed aggrega...

引用

12th International Asia Pacific Web Conference, APWeb 2010

作者： Zhang, Yansong Wang, Shan Huang, Wei Key Laboratory of the Ministry of Education for Data Engineering and Knowledge Engineering Beijing 100872 China School of Information Renmin University of China Beijing 100872 China Department of Computer Harbin Financial College Harbin Helongjiang 150030 China

ISBN: (纸本)9780769540122

The requirements of OLAP applications increase rapidly by dramatically increased data volume, users, query volume and query complexity. The requirement for shortening update period in data warehouse is another crucial factor for a scalable OLAP application. In this paper, we propose a scalable OLAP prototype to support the query processing with increasing data volume by distributing the whole fact tuples to multiple servers to construct a set of sibling cubes which can be merged together to obtain the whole cube. We employ a light weight distribution policy with fully duplicated dimension tables in each sibling server on the observation of very low proportion of space cost for dimension tables. OLAP query with distributed aggregate functions can be transformed into queries to be performed parallel in sibling servers. For non-distributed computing aggregate functions, such as median, the optimized median aggregate computing algorithm is proposed to reduce transmission volume between servers while computing the global median values. We also present a three-level framework in data warehouse to meet the requirement of shorter update period in "operational business intelligence". An asynchronous tunnel model is proposed to reduce update latency by pre-fetching updated tuples to OLAP processing server. Finally, we set up prototype system ParaCube to evaluate performance in SN (shared-nothing) system and multi-core platforms. © 2010 IEEE.

关键词： data warehouses

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SPARQL2XQuery 2.0: Supporting semantic-based queries over XML data

SPARQL2XQuery 2.0: Supporting semantic-based queries over XM...

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5th International Workshop on Semantic Media Adaptation and Personalization, SMAP 2010

作者： Stavrakantonakis, Ioannis Tsinaraki, Chrisa Bikakis, Nikos Gioldasis, Nektarios Christodoulakis, Stavros MUSIC TUC Technical University of Crete Greece Department of Information Engineering and Computer Science University of Trento Italy Knowledge and Database Systems Laboratory National Technical University of Athens Greece

ISBN: (纸本)9781424486007

The dominant standards in multimedia content and service description, namely the MPEG-7 and the MPEG-21, have been expressed in XML Schema syntax. In addition, ontologies that capture the semantics of these standards have been developed using the semantic web languages. Since different communities in the industry and the academia work and are familiar with the Semantic Web environment or the XML environment, a Schema mapping framework and a Query mapping framework are needed that will allow querying multimedia content and service descriptions in a uniform way in both the XML and Semantic Web environments. We present in this paper SPARQL2XQuery 2.0, a framework that allows expressing semantic queries on top of XML data through the translation of SPARQL queries in XQuery syntax. SPARQL2XQuery 2.0 may work with both existing ontologies and with automatically produced ones, formed according to our XS2OWL 2.0 transformation model. XS2-OWL 2.0 exploits the OWL 2.0 semantics and supports the new XML constructs introduced by XML Schema 1.1. © 2010 IEEE.

关键词： XML

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SLA validation of service value chains

SLA validation of service value chains

引用

9th International Conference on Grid and Cloud Computing, GCC 2010

作者： Ul Haq, Irfan Schikuta, Erich Brandic, Ivona Paschke, Adrian Boley, Harold Department of Knowledge and Business Engineering University of Vienna Austria Information Systems Institute Vienna University of Technology Austria Institute of Computer Science Freie University Berlin Germany Institute of Information Technology National Research Council Canada

ISBN: (纸本)9780769543130

Business-to-Business (B2B) workflow/service interoperation across Virtual Organisations (VOs) brings about novel business scenarios. In these scenarios, parts of workflows (or services) corresponding to different partners can be aggregated in a producer-consumer manner, leading to hierarchical structures of added value interpreted as service value chains. Service Level Agreements (SLAs), which are contracts between service providers and service consumers, guarantee the expected quality of service (QoS) to different stakeholders at various levels of a service value chain. The essential requirements for such an SLA-based choreography of services include agile component-based infrastructure to support the corresponding choreography of their SLAs;proactive validation of SLAs to prevent violations;reactive validation of SLAs for penalty enforcement and breach management;and business enabling requirements such as trust, privacy, security and automation. In this paper we highlight the significance of these issues and propose their solutions. We then proceed to weave these solution components together into a comprehensive SLA validation framework that blends together two major systems: a rule based distributed system for SLA validation and a service monitoring system for the prevention of SLA violations. © 2010 IEEE.

关键词： Quality of service

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Performance study on logging to another main memory database

Performance study on logging to another main memory database

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作者： Qin, Xiongpai Xiaoyun, Zhou Key Laboratory of Data Engineering and Knowledge Engineering School of Information Renmin University of China Beijing 100872 China Department of Computer Science and Technology Xuzhou Normal University Xuzhou Jiangsu 221008 China

ISBN: (纸本)9788988678183

In update intensive main memory database applications, huge volume of log records is generated, to maintain the ACID properties of the database system, the log records should be persistent efficiently. Delegating logging of one main memory database to another main memory database is proposed. The scheme is elaborated in detail in terms of architecture, logging & safeness levels, checkpointing, and recovery. Strict durability and relax durability are provided. When some form of non-volatile memory is used to temporarily holding log records, not only logging efficiency is improved, but also the scheme could guarantee full ACID of the system. We also propose using parallel logging to speedup log persistence by writing logs to multiple disks in parallel. Since interconnection network techniques progress by leaps and bounds, the scheme eliminates the concern about whether the system's overall performance may be slowed down by bandwidth and latency limitations. Experiment results demonstrate the feasibility of the proposal.

关键词： Interconnection networks (circuit switching)

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Functional programming way to interact with software attacks and vulnerabilities

Functional programming way to interact with software attacks...

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3rd International Conference on Software Testing, Verification, and Validation Workshops, ICSTW 2010

作者： Damjanovic, Violeta Djuric, Dragan Salzburg Research Knowledge-based Information Systems Jakob Haringer Strasse 5/III 5020 Salzburg Austria Department of Software Engineering University of Belgrade Jove Ilica 154 11000 Belgrade Serbia

ISBN: (纸本)9780769540504

This paper proposes using functional programming style in a way to respond to detection of and interaction with the software attacks and vulnerabilities. Additionally, our approach considers involving Description Logics, as a basis for the use of the Semantic Web and meta-programming to produce executable ontologies and to enable semantic reasoning over behavior and interaction with software attacks and vulnerabilities. Accordingly, we introduce Magic Potion, a recently defined Domain Specific meta-Language that uses Modeling Spaces framework to study heterogeneous modeling and meta-modeling problems inspired by Model Driven Architecture. As an example of formalism for modeling software attacks and vulnerabilities, we explore Attack Tree, which provides a formal methodology for analyzing the security of the system. Based on Attack Tree, which is herein specified for a particular problem of dealing with known attacks and vulnerabilities of the security layer of the Wireless Application Protocol, and which is particularly built on top of Magic Potion specification, we define our specific Domain Specific Language that we call Attack Tree Domain Specific Language. It is envisioned as a tool for modeling and interacting with software attacks and vulnerabilities. © 2010 IEEE.

关键词： Software design

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