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FOG-Engine: Towards Big data Analytics in the Fog

FOG-Engine: Towards Big Data Analytics in the Fog

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IEEE International symposium on Dependable, Autonomic and Secure Computing (DASC)

作者： Farahd Mehdipour Bahman Javadi Aniket Mahanti Tech Futures Lab & Unitec Institute of Technology Auckland New Zealand Western Sydney University Sydney Australia University of Auckland Auckland New Zealand

Existing platforms fall short in providing effective solutions for big data analytics while the demands for processing large quantities of data in real-time are increasing. Moving data analytics towards where the data is generated and stored could be a solution for addressing this issue. In this paper, we propose a solution referred as FOG-engine, which is integrated into IoTs near the ground and facilitates data analytics before offloading large amounts of data to a central location. In this work, we introduce a model for data analytic using FOG-engines and discuss our plan for evaluating its efficacy in terms of several performance metrics such as processing speed, network bandwidth, and data transfer size.

关键词： fogs fog Performance metrics central location data analysis NEBULISED Solutions big data network bandwidth UNLOADING data transmission PROCESSING SPEED ground large QUANTITIES

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A Comprehensive analysis of the Effectiveness of large Language Models as Automatic Dialogue Evaluators 38

A Comprehensive Analysis of the Effectiveness of Large Langu...

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38th AAAI Conference on Artificial Intelligence (AAAI) / 36th Conference on Innovative Applications of Artificial Intelligence / 14th symposium on Educational Advances in Artificial Intelligence

作者： Zhang, Chen D'Haro, Luis Fernando Chen, Yiming Zhang, Malu Li, Haizhou Natl Univ Singapore Singapore Singapore Univ Politecn Madrid Speech Technol Grp Madrid Spain Univ Elect Sci & Technol China Chengdu Peoples R China Chinese Univ Hong Kong Shenzhen Shenzhen Peoples R China

ISBN: (纸本)1577358872

Automatic evaluation is an integral aspect of dialogue system research. the traditional reference-based NLG metrics are generally found to be unsuitable for dialogue assessment. Consequently, recent studies have suggested various unique, reference-free neural metrics that better align with human evaluations. Notably among them, large language models (LLMs), particularly the instruction -tuned variants like ChatGPT, are shown to be promising substitutes for human judges. Yet, existing works on utilizing LLMs for automatic dialogue evaluation are limited in their scope in terms of the number of meta-evaluation datasets, mode of evaluation, coverage of LLMs, etc. Hence, it remains inconclusive how effective these LLMs are. To this end, we conduct a comprehensive study on the application of LLMs for automatic dialogue evaluation. Specifically, we analyze the multi-dimensional evaluation capability of 30 recently emerged LLMs at both turn and dialogue levels, using a comprehensive set of 12 meta-evaluation datasets. Additionally, we probe the robustness of the LLMs in handling various adversarial perturbations at both turn and dialogue levels. Finally, we explore how model -level and dimension -level ensembles impact the evaluation performance. All resources are available at https: //***/e0397123/comp- analysis

关键词： Speech processing

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A Novel Low Training Cost SSVEP Detector Design

A Novel Low Training Cost SSVEP Detector Design

引用

International symposium on Computational Intelligence and Design, ISCID

作者： Changkai Tong Huali Wang College of Communications Engineering the Army Engineering University Nanjing China

ISBN: (纸本)9781665438575

Over the past years, steady-state visual evoked potentials (SSVEP) has been widely used in brain-computer interfaces (BCIs) due to its high efficiency, robustness and noninvasive. the supervised SSVEP detector attracted the attention of researchers for its high information transfer rate (ITR). However, the tedious training process restricted its extensive application. this study proposed a low-training cost SSVEP detector with a dynamic window strategy. By this method, the users only need to collect 40-s training data and can achieve a high performance. A 40-target data set was employed to evaluate the performance of the proposed method. the results indicated that the proposed method can achieve 177.5 bits/min ITR, which is 11.2% higher than filter bank canonical correlation analysis with dynamic window (FBCCA-DW).

关键词： Training visualization Costs Correlation Training data Detectors Benchmark testing

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Implications of Distance over Redistricting Maps: Central and Outlier Maps 38

Implications of Distance over Redistricting Maps: Central an...

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38th AAAI Conference on Artificial Intelligence (AAAI) / 36th Conference on Innovative Applications of Artificial Intelligence / 14th symposium on Educational Advances in Artificial Intelligence

作者： Esmaeili, Seyed A. Chakrabarti, Darshan Grape, Hayley Brubach, Brian Univ Chicago Data Sci Inst Chicago IL 60637 USA Columbia Univ New York NY USA Wellesley Coll Wellesley MA USA

ISBN: (纸本)1577358872

In representative democracy, a redistricting map is chosen to partition an electorate into districts which each elects a representative. A valid redistricting map must satisfy a collection of constraints such as being compact, contiguous, and of almost-equal population. However, these constraints are loose enough to enable an enormous ensemble of valid redistricting maps. this enables a partisan legislature to gerrymander by choosing a map which unfairly favors it. In this paper, we introduce an interpretable and tractable distance measure over redistricting maps which does not use election results and study its implications over the ensemble of redistricting maps. Specifically, we define a central map which may be considered "most typical" and give a rigorous justification for it by showing that it mirrors the Kemeny ranking in a scenario where we have a committee voting over a collection of redistricting maps to be drawn. We include running time and sample complexity analysis for our algorithms, including some negative results which hold using any algorithm. We further study outlier detection based on this distance measure and show that our framework can detect some gerrymandered maps. More precisely, we show some maps that are widely considered to be gerrymandered that lie very far away from our central maps in comparison to a large ensemble of valid redistricting maps. Since our distance measure does not rely on election results, this gives a significant advantage in gerry-mandering detection which is lacking in all previous methods.

关键词： Statistics

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Enabling Public Verifiability and data Dynamics for Storage Security in Cloud Computing

Enabling Public Verifiability and Data Dynamics for Storage ...

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14th European symposium on Research in Computer Security (ESORICS 2009)

作者： Wang, Qian Wang, Cong Li, Jin Ren, Kui Lou, Wenjing IIT Chicago IL 60616 USA Worcester Polytech Inst Worcester MA 01609 USA

ISBN: (纸本)9783642044434

Cloud Computing has been envisioned its the next-generation architecture of IT Enterprise. It moves the application software and databases to the centralized large data centers, where the management of the data and services may not be fully trustworthy. this unique paradigm brings about, many new security challenges, which have, not been well understood. this work studies the problem of ensuring the integrity of data, storage in Cloud Computing. In particular, we consider the task of allowing a, third party auditor (TPA);on behalf of the cloud client, to verify the integrity of the dynamic data stored in the cloud. the introduction of TPA eliminates the involvement of client through the auditing of whether his data stored in the cloud is indeed intact, which can be important in achieving economies of scale for Cloud Computing. the support for data dynamics via the most general forms of data operation, such as block modification, insertion and deletion, is also a significant step toward practicality, since services in Cloud Computing are not limited to archive or backup data only. While prior works on ensuring remote data, integrity often lacks the support of either public verifiability or dynamic data, operations, this paper achieves both. We first identify, the difficulties and potential security problems of direct extensions with fully dynamic data, updates from prior works and then show how to construct an elegant verification scheme for seamless integration of these two salient features in our protocol design. In particular, to achieve efficient data dynamics, we improve the Proof of Retrievability model [1] by manipulating the classic Merkle flash Tree (MHT) construction for block tag authentication. Extensive security and performance analysis show that;the proposed scheme is highly efficient and provably secure.

关键词： Economics

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Morphological templates for extracting texture information in X-ray mammography

Morphological templates for extracting texture information i...

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Annual IEEE symposium on Computer-Based Medical Systems

作者： F. Khan Y. Sun Electrical and Computer Engineering University of Rhode Island USA

Describes a new filter to enhance lesions in X-ray mammograms by extracting texture information within a morphological template. A circular ring template is used to characterize the morphological features for certain types of lesions. three texture-related features (standard deviation, skew and kurtosis) are applied within the template for visual enhancement of the lesions. the results showed that the ring template enhanced visualization of a typical lesion by creating a "halo" response surrounding the lesion. the standard deviation, skew and kurtosis were sensitive to roughness, the presence of peaks and abrupt changes in the texture of the mammograms. Of the 45 lesions, 87% were enhanced using standard deviation, 84% by skew and 80% by kurtosis.

关键词： data mining Mammography Lesions Pixel Filters Cancer Shape Image databases Image analysis Density measurement

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Execution data connected simulation for production operation planning and control

Execution data connected simulation for production operation...

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14th IFAC symposium on Information Control Problems in Manufacturing, INCOM'12

作者： Kádár, B. Pfeiffer, A. Monostori, L. Fraunhofer Project Center on Production Management Informatics Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Hungary Department of Manufacturing Science and Technology Faculty of Mechanical Engineering Budapest University of Technology and Economics Budapest Hungary

ISBN: (纸本)9783902661982

Due to the large number of the resources, the frequent reengineering of manufacturing processes and the often changing product types, the maintenance of the simulation model and the provision of up-to-date input data are almost always difficult. the paper introduces new quantitative analysis method including processing time and batch calculation algorithms applied in the automatic building of discrete-event simulation systems. the simulation model and the mentioned algorithms are both directly interfaced with real execution databases and the overall solution supports the shop-floor managers in making control decisions. the applicability of the elaborated approach is illustrated by the results of experiments relying on real historical data. © 2012 IFAC.

关键词： Manufacture

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Mobile multimedia streaming techniques: QoE and energy saving perspective

Mobile multimedia streaming techniques: QoE and energy savin...

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IEEE 14th International symposium and Workshops on a World of Wireless, Mobile and Multimedia Networks (WoWMoM)

作者： Hoque, Mohammad Ashraful Siekkinen, Matti Nurminen, Jukka K. Aalto, Mika Tarkoma, Sasu Aalto Univ Sch Sci Espoo Finland Nokia Solut & Networks Espoo Finland Univ Helsinki FIN-00014 Helsinki Finland

Multimedia streaming to mobile devices is challenging for two reasons. First, the way content is delivered to a client must ensure that the user does not experience a long initial playback delay or a distorted playback in the middle of a streaming session. Second, multimedia streaming applications are among the most energy hungry applications in smartphones. the energy consumption mostly depends on the delivery techniques and on the power management techniques of wireless access technologies (Wi-Fi, 3G, and 4G). In order to provide insights on what kind of streaming techniques exist, how they work on different mobile platforms, their efforts in providing smooth quality of experience, and their impact on energy consumption of mobile phones, we did a large set of active measurements with several smartphones having both Wi-Fi and cellular network access. Our analysis reveals five different techniques to deliver the content to the video players. the selection of a technique depends on the mobile platform, device, player, quality, and service. the results from our traffic and power measurements allow us to conclude that none of the identified techniques is optimal because they take none of the following facts into account: access technology used, user behavior, and user preferences concerning data waste. We point out the technique with the best playback buffer configuration, which provides the most attractive trade-offs in particular situations. (C) 2014 Elsevier B.V. All rights reserved.

关键词： Performance analysis Measurement Power consumption Wireless multimedia Quality of experience (QoE)

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Comparison of region-of-interest analysis and human observers in the diagnosis of Parkinson's disease using [99mTc]TRODAT-1 and SPECT

Comparison of region-of-interest analysis and human observer...

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2004 Nuclear Science symposium, Medical Imaging Conference, symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors

作者： Acton, Paul D. Newberg, Andrew Plossl, Karl Mozley, P. David Department of Radiology University of Pennsylvania Philadelphia PA 19104 United States Eli Lilly and Company Indianapolis United States

A large set of patients with Parkinson's Disease (PD), and normal healthy control subjects, were studied using the dopamine transporter tracer [ 99mTc]TRODAT-1 and single photon emission tomography (SPECT). the sample used in this study was comprised of 81 PD patients (mean age ± SD, 63.4 ± 10.4 y;age range, 39.0-84.2 y), and 94 healthy controls (mean age ± SD, 61.8 ± 11.0 y;age range, 40.9-83.3 y). A standardized template containing six regions-of-interest (ROIs) was transposed onto subrogions of the right and left basal ganglia. In addition, all images were coregistered to a standard [99mTc]TRODAT-1 template. the three slices corresponding to the striatum were extracted and summed into a single transverse slice. these single-slice images were used in a human observer study, using four experienced investigators. Each observer was asked to rate their confidence that each randomly selected image had the appearance of a healthy control subject, or a patient with PD. the data from the observer study was analyzed using a Receiver Operating Characteristic (ROC) analysis. the area under the ROC curve (AUC) indicated the accuracy with which each observer identified each subject. In a similar manner, the ROI data was also analyzed using a ROC curve. the observer analysis gave a more accurate diagnosis (AUC = 0.93 ± 0.02) than the ROI technique (AUC = 0.90 ± 0.02). this suggests that the human observers are visually acquiring more information from the images than is contained in the quantitative striatal uptake alone. Indeed, it is likely that the pattern of uptake of the tracer is of more significance than the absolute uptake, which has implications for the analysis of radionuclide images using quantitative techniques. © 2004 IEEE.

关键词： Disease control

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Sluggish Calendar Queues for Network Simulation

Sluggish Calendar Queues for Network Simulation

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International symposium on Modeling, analysis and Simulation of Computer and Telecommunication Systems (MASCOTS)

作者： Guanhua Yan S. Eidenbenz Los Alamos National Laboratory Discrete Simulation Sciences (CCS-5)

Discrete event simulation is an indispensable tool to understand the dynamics of communication networks and evaluate their performance. As the scale and complexity of these networks increases, simulation itself becomes a computationally prohibitive undertaking. Among all possible solutions, improving the performance of event manipulation operations is an important one. In this paper, we discover that in network simulation events are often inserted into the simulation kernel in their timestamp order. Based on this observation, we make some simple modifications on the conventional calendar queue. Experiments show that the new data structure can achieve two orders of execution speedup against the conventional calendar queue in some wireline network simulation and in wireless network simulation, the speedup scales well with the network size.

关键词： Calendars Discrete event simulation Computational modeling data structures Communication networks large-scale systems Laboratories Computer networks Kernel Wireless networks

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