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Evaluating spreading activation for soft information fusion

Evaluating spreading activation for soft information fusion

引用

international conference on Information Fusion

作者： Michael Kandefer Stuart C. Shapiro Department of Computer Science and Engineering and National Center of Multisource Information Fusion State University of New York University at Buffalo Buffalo NY USA

A soft-information fusion process produces refined estimates of soft-information, such as natural language messages. Information resulting from a soft-information process can be used to retrieve related, relevant information from background (a-priori) knowledge sources using contextual “cues” contained in those messages, a process we call “Context-Based Information Retrieval (CBIR)”. these retrieval results can be used to aid further understanding, and other fusion operations (e.g., data association). CBIR process performance is dependent on the choice of algorithms and parameters for those algorithms, and it is crucial that these are chosen appropriately for the problem domain the CBIR algorithm is used to aid. In this paper an f-measure evaluation of two spreading activation algorithms and their parameters is given using a soft information fusion process in a counterinsurgency domain. this evaluation takes place in two phases. the first phase executes the algorithms over a range of values in order to determine how those parameters affect the performance of the algorithms, and to set these parameters for future use. the second phase compares the results of these algorithms using the parameter settings learned from the first phase.

关键词： Information retrieval Cognition Context Mathematical model Algorithm design and analysis Natural languages Equations

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Pathfinder: Oklahoma's advanced traveler information system

Pathfinder: Oklahoma's advanced traveler information system

引用

international conference on Intelligent Transportation

作者： Patrick A. Campbell John R. Junger Joseph P. Havlicek Alan R. Stevenson Ronald D. Barnes School of Electrical and Computer Engineering University of Oklahoma ITS Laboratory Norman OK USA Oklahoma Department of Transportation Technology Services Division Oklahoma City OK 73105 USA

As part of ITS initiatives worldwide, Advanced Traveler Information Systems (ATIS) provide potential travelers with information and images from roadway and roadside technology. this information benefits the traveling public by improving pre-travel routing and other trip planning capabilities. As part of broader traffic management ITS strategies, these systems improve overall safety by reducing the number of congestion-related crashes and improve the efficiency of transportation systems by increasing roadway capacity. However, the development of an ATIS offers numerous challenges that are unique to the individual region served. the cost of deployment and operation is of critical importance, particularly for states with smaller populations and transportation budgets. this paper presents the design of the Oklahoma Pathfinder ATIS, addressing the state's constraints and exploiting the state's unique ITS deployment. It details the information capabilities, deployment experiences, and traveler reception of the system.

关键词： Cameras Servers Feeds Streaming media Road transportation Internet

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Functional-architectural diagnosability analysis of embedded architecture

Functional-architectural diagnosability analysis of embedded...

引用

international conference on Intelligent Transportation

作者： Manel Khlif M. Shawky Heudiasyc-UMR CNRS 6599 Université de Technologie de Compiègne Compiegne France

Diagnosability analysis of functions offers now a serious complement to knowledge-based methods of diagnosis, such as FMEA (Failure Mode and Effects Analysis) and fault tree analysis. State of the art of diagnosability analysis focus on what we call "functional diagnosability", where the hardware architecture of the system and its constraints are not directly considered. this paper contributes to the analysis of the functions-architecture interaction impact on the diagnosability of an embedded system, especially automotive systems. the approach we developed can be integrated into the design cycle. It has two important phases; first, the diagnosability analysis of discrete event systems, then the verification of a property set that we have defined and called the “diagnosability functional-architectural properties”. Properties verification is done in two stages: check the description of the architecture, described in AADL, and check the functions-architecture interaction, modeled in SystemC-Simulink. the validation process is applied on a real automotive experimental embedded platform based on several Electronic Control Units. Finally, we have developed through this paper a novel methodology for the analysis of diagnosability that takes into account the constraints of the hardware architecture of the system.

关键词： computer architecture Hardware Mathematical model Analytical models Observers Engines Sensors

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Unsupervised segmentation for MR brain images 11

Unsupervised segmentation for MR brain images

引用

4th international Symposium on Applied Sciences in Biomedical and Communication Technologies, ISABEL'11

作者： Sato, Kazuhito Kadowaki, Sakura Madokoro, Hirokazu Ito, Momoyo Inugami, Atsushi Faculty of Systems Science and Technology Akita Prefectural University 84-4 Tsuchiya-Ebinokuchi Yuri-Honjo 015-0055 Japan Smart Design Corp. 201 Bestland Building 14-7 Hodono Suwa-cho Akita 010-0911 Japan Institute of Technology and Science University of Tokushima 2-1 Minamijyousanjima-cho Tokushima 770-8506 Japan Department of Radiology and Nuclear Medicine Akita Kumiai General Hospital 273-1 Iijima Nishibukuro Akita 011-0911 Japan

ISBN: (纸本)9781450309134

As described herein, we propose an unsupervised method for segmentation of magnetic resonance (MR) brain images by hybridizing the self-mapping characteristics of 1-D Self-Organizing Maps (SOMs) and using incremental learning functions of fuzzy Adaptive Resonance theory (ART). As the proposed method requires the appropriate parameters to segment tissues (such as cerebrospinal fluid, gray matter and white matter) that are necessary for brain atrophy diagnosis, first we derive the optimal parameter set through the preliminary experiments. the main contribution of this work is to evaluate the effectiveness of the proposed method, considering the conventional methods that are highly accurate in terms of usefulness as classification techniques. We focus on Fuzzy C-means (FCM) and Expectation Maximization Gaussian Mixture (EM-GM) with previous setting of the number of clusters, and then Mean Shift (MS) without previous setting of the number of clusters. through the comparative experiments on the two metrics, we confirmed that our method could achieve higher accuracy than these conventional methods. Additionally, we propose a computer-aided Diagnosis (CAD) system for use with brain dock examinations based on case analyses of diagnostic reading. We construct a prototype system for reducing loads on diagnosticians during quantitative analysis of the degree of brain atrophy. Field tests of 193 examples of brain dock medical examinees reveal that the system efficiently supports diagnostic work in the clinical field: the alteration of brain atrophy attributable to aging can be quantified easily, irrespective of the diagnostician. © 2011 ACM.

关键词： Magnetic resonance

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Proceedings - 2009 11th IEEE international conference on computer-aided design and computer graphics, CAD/graphics 2009: Preface

Proceedings - 2009 11th IEEE International Conference on Com...

引用

Proceedings - 2009 11th IEEE international conference on computer-aided design and computer graphics, CAD/graphics 2009 2009年

作者： thalmann, Daniel Shah, Jami J. Peng, Qunsheng Pan, Yunhe Magnenat-thalmann, Nadia Zhou, Mengqi

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Towards a safer development of driver assistance systems by applying requirements-based methods

Towards a safer development of driver assistance systems by ...

引用

international conference on Intelligent Transportation

作者： Henning Jost Silke Köhler Frank Köster Department of Computer Science University of Oldenburg Oldenburg Germany Institute of Transportation Systems German AeroSpace Center (DLR) Braunschweig Germany

the development of intelligent transport systems such as driver assistance systems currently faces increasing system complexity and a growing number of requirements, e.g. from safety standards. thus, requirements engineering activities gain an increasingly important role when it comes to the development of safety-critical transport systems. As an example, the introduction of ISO 26262 in the automotive domain requires the adaptation of existing industrial development processes to comply with the upcoming standard. the proposed methods address the new demand in requirements management for a safer development of driver assistance systems. By means of ontologies, domain requirements such as from ISO 26262 are formalized providing a reference model to support semi-automated requirements discovery. Based on this formalized knowledge and an automatically identified selection criterion such as the system's Automotive Safety Integrity Level (ASIL), the large set of process and product related requirements of ISO 26262 is tailored to a reduced set of applicable steps and methods for a project specific development process. the proposed methods have been implemented in a prototype toolchain. In terms of driver assistance systems, a lane departure warning system is used as an application example to illustrate the proceeding.

关键词： ISO standards Ontologies Safety System analysis and design OWL Vehicles

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Peer-based communication for a distributed, virtual Traffic Management Center

Peer-based communication for a distributed, virtual Traffic ...

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international conference on Intelligent Transportation

作者： Basel H. Kilani Patrick A. Campbell Joseph P. Havlicek Monte P. Tull Alan R. Stevenson Ronald D. Barnes School of Electrical and Computer Engineering University of Oklahoma Norman OK USA Oklahoma Department of Transportation Technology Services Division Oklahoma City OK 73105 USA

In an effort to monitor and alleviate roadway traffic conditions, the Oklahoma Department of Transportation (ODOT) has deployed a statewide Intelligent Transportation Systems (ITS) architecture consisting of a large number of devices, including cameras, dynamic message signs, and speed sensors along Oklahoma highways. these devices are connected throughout a private ITS fiber-optic network to controlling stations located at stakeholder agencies statewide, forming a virtual Traffic Management Center (TMC). this decentralized approach allows individual consoles on the virtual TMC to display and control reachable devices even if portions of the network become disconnected. Enabling this fault-tolerant design is a novel peer-based communications protocol. the communication system is dynamically configured and automatically resolves communications regardless of network configuration. this paper introduces this robust peer-based approach and describes its implementation within the Oklahoma virtual TMC. Results of this implementation of the system are also presented.

关键词： IP networks Databases Peer to peer computing Transportation Fault tolerance Fault tolerant systems

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Hard sensor fusion for COIN inspired situation awareness

Hard sensor fusion for COIN inspired situation awareness

引用

international conference on Information Fusion

作者： Matthew S. Baran Donald J. Natale Richard L. Tutwiler Matthew M. McQuillan Christopher Griffin John M. Daughtry Jeffrey Rimland David L. Hall Communication and Imaging Division Applied Research Laboratory Pennsylvania State University University Park PA USA Cyber Innovation Division Applied Research Laboratory Pennsylvania State University University Park PA USA NSWC-Dahlgren Division EO-IR Sensor Technology & Development G83 Dahlgren VA USA College of Information Sciences & Technology Pennsylvania State University University Park PA USA

ISBN: (纸本)9781457702679

Counter Insurgency operations require the ability to develop accurate representations of the physical environment and the human landscape in various conditions (e.g., urban and non-urban, day and night, and various weather conditions). We are developing innovative sensor suites and processing techniques suitable for such domains as part of a larger effort to support human-centric hard/soft data fusion. In this paper, we present a sensor suite, an information processing architecture, examples of the resulting fused information, and future experimental designs. these combined resources present opportunities for creating rich 3-D characterizations of the environment and can support novel hybrid human/computer methods for target characterization, identification, and tracking.

关键词： Sensor fusion Laser radar Humans Algorithm design and analysis Pixel Image color analysis

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“A synopsis of self-healing functions in wireless networks”

“A synopsis of self-healing functions in wireless networks”

引用

IEEE international conference on Multi Topic

作者： Kasma Azizan Kamal Junaid Ahsenali Chaudhry Saqib Ali Mudassar Ahmad Md Asri Bin Ngadi Abdul Hanan Abdullah Department of CS and Communication Faculty of CS and IS Universiti Teknologi Malaysia Johor Malaysia Department of Computer Science Faculty of Sciences University of Agriculture Faisalabad Pakistan

In early 20th century when technology evolve, the performance of systems suffered from the problems of complexity, increasing cost of maintenance and software of hardware failure caused by unpredictable behavior and poor manageability. this fostered researchers to discover new design and techniques that enable the systems to operate autonomously. In 2001, IBM introduces self-managing capabilities (self-organizing, self-healing, self-optimization and self-protection) with autonomous behavior. In this survey, the main concerns are self-healing autonomic computing. Self-healing is an autonomic computing system that detects and diagnoses errors without the need of human intervention. A number of concepts, techniques and functions have been developed in different application areas of self-healing. this survey gives an overview about some approaches and solutions of past and current research in self-healing classified to operating system, routing, security and web services. these proposed approaches and solutions were developed to solve the problems that arise in manual intervention system. To achieve the perfect of self-healing behaviors, its remains an open and significant challenge that can be accomplished through a combination of process changes, new technologies and architecture and open industry standards.

关键词： Mobile computing Monitoring Ad hoc networks Security

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An adaptive routing system for location-aware mobile devices on the road network

An adaptive routing system for location-aware mobile devices...

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international conference on Intelligent Transportation

作者： Paul Borokhov Sebastien Blandin Samitha Samaranayake Olivier Goldschmidt Alexandre Bayen Department of Civil and Environmental Engineering University of California Berkeley Berkeley CA USA OPNET Technologies Bethesda MD 20814 USA Department of Electrical Engineering and Computer Sciences and the Department of Civil and Environmental Engineering University of California Berkeley Berkeley CA USA

As congestion problems become a greater concern and negatively impact society, solutions which alleviate them are needed to improve the performance of the transportation system. Routing systems which take into account the travel-time experienced by the driver have been largely unexplored in the domain of adaptive routing. In this article, we present a system which enables users of smartphones to obtain directions generated using an algorithm which provides an optimal routing policy for reliable on-time arrival; that is, directions which seek to maximize the probability of arriving to the destination within a given time budget, rather than to minimize the travel time based on posted speed limits. Our work leverages the geolocation capabilities of smartphones to provide optimal routing directions along the route dependent on the realized (experienced) travel time. the adaptive routing scheme we implement allows for significant power savings and improved driver safety compared to classical routing algorithms; special attention is paid to minimizing driver distraction by emphasizing aural and graphical components over textual elements during route guidance. Finally, we illustrate system performance and design choices on synthetic examples and real traffic data from the Mobile Millennium system in San Francisco.

关键词： Routing Servers Mobile communication Mobile handsets Roads Global Positioning System

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