ppxscal/embedding_network huggingface dataset:
Self healing in System-S
Authors: Gabriela Jacques-Silva, Jim Challenger, Lou Degenaro, James Giles, Rohit Wagle
Venue: Cluster Computing (2008)

Faults in a cluster are inevitable. The larger the cluster, the more likely the occurrence of some failure in hardware, in software, or by human error. System-S software must detect and self-repair failures while carrying out its prime directive--enabling stream processing program fragments to be distributed and connected to form complex applications. Depending on the type of failure, System-S may be able to continue with little or no disruption to potentially tens of thousands of interdependent and heterogeneous program fragments running across thousands of nodes.We extend the work we previously presented on the self healing nature of the job manager component in System-S by presenting how it can handle failures of other system components, applications and network infrastructure. We also evaluate the recoverability of the job management orchestrator component of System-S, considering crash failures with and without error propagation.
Implementation of a central laboratory with consolidated laboratory network for central Taiwan national hospital union
Authors: Show-Wei Chien, Yuan-Nian Hsu, Chu-Ying Kou, Kuo-Hsien Hunag, Yung-Fu Chen
Venue: Proceedings of the 5th WSEAS International Conference on Circuits, Systems, Electronics, Control & Signal Processing (2006)

Total laboratory automation (TLA) system accompanied with consolidated laboratory network has been demonstrated to be able to greatly reduce operational costs and improve clinical effectiveness and economic efficiency. Use single space. Taiwanese healthcare insurance system has undergone unbalanced income and outcome these years. In order to improve its financial problem, the central insurance agency frequently increases the insurance pensions, which, in turn, highly decrease citizen satisfaction of the government performance and efficiency. Solutions for decreasing the running costs are important for improving current financial deficit. Recently, a central laboratory equipped with TLA system has been set up in central Taiwan area as a platform for evaluation of its performance and efficiency. The outcome of this study will be used as a reference for Department of Health (DOH) of Taiwan to plan its future development on Taiwan healthcare issue. After its operation since Mar. 2006, the central laboratory with TLA system has been demonstrated to have great performance and efficiency that the specimen turnaround time has been decreased for about 60% and the number of operators has been reduced from 60 to 45. In conclusion, the preliminary investigation demonstrates that TLA accompanied with consolidated laboratory network is efficient in reducing laboratory costs which can be widely applied to regions all around Taiwan.
A new detection algorithm for manets based on product trellises using space time trellis codes
Authors: Pablo Adasme, Ismael Soto, Rolando Carrasco, Leszek Szczecinski
Venue: Proceedings of the 10th WSEAS International Conference on APPLIED MATHEMATICS (2006)

In this paper, we propose a new detection algorithm based on product trellises for a MANET wireless MIMO system. Two cases of study will be discussed, one for BPSK and another one for 4-PSK modulation. In the case of BPSK with AWGN channel a gain of 1.5 dB for a BER of 10-4 is achieved. In the second case using 4-PSK with Rayleigh fading channel a gain of 1 dB for a BER of 10-4 is also achieved.
A lightweight metadata quality tool
Authors: David M. Nichols, Chu-Hsiang Chan, David Bainbridge, Dana McKay, Michael B. Twidale
Venue: Proceedings of the 8th ACM/IEEE-CS joint conference on Digital libraries (2008)

We describe a Web-based metadata quality tool that provides statistical descriptions and visualisations of Dublin Core metadata harvested via the OAI protocol. The lightweight nature of development allows it to be used to gather contextualized requirements and some initial user feedback is discussed.
MiHOS: an approach to support handling the mismatches between system requirements and COTS products
Authors: Abdallah Mohamed, Guenther Ruhe, Armin Eberlein
Venue: Requirements Engineering (2007)

In the process of selecting Commercial Off-The-Shelf (COTS) products, it is inevitable to encounter mismatches between system requirements and COTS products. These mismatches occur as a result of an excess or shortage of the COTS attributes. This paper proposes a decision support approach, called MiHOS (Mismatch Handling for COTS Selection), that aims at addressing COTS mismatches during and after the selection process. MiHOS can be integrated with existing COTS selection methods at two points: (1) For evaluating COTS candidates: MiHOS estimates the anticipated fitness of the candidates if their mismatches are resolved. This helps to base our COTS selection decisions on the fitness that the candidates will eventually have if selected. (2) Mismatch resolution after selecting a COTS product: MiHOS suggests alternative plans for resolving the most appropriate mismatches using suitable actions, such that the most important risk, technical, and resource constraints are met. A case-study is used to illustrate MiHOS and to discuss its added value.
Research note: Comments on "Design and performance evaluation of load distribution strategies for multiple loads on heterogeneous linear daisy chain networks"
Authors: Matthieu Gallet, Yves Robert, Frédéric Vivien
Venue: Journal of Parallel and Distributed Computing (2008)

Min, Veeravalli, and Barlas have proposed strategies to minimize the overall execution time of one or several divisible loads on a heterogeneous linear network, using one or more installments [Han Min Wong, Bharadwaj Veeravalli, Scheduling divisible loads on heterogeneous linear daisy chain networks with arbitrary processor release times, IEEE Trans. Parallel Distrib. Syst. 15 (3) (2004) 273-288; Han Min Wong, Bharadwaj Veeravalli, Gerassimos Barlas, Design and performance evaluation of load distribution strategies for multiple divisible loads on heterogeneous linear daisy chain networks, J. Parallel Distrib. Comput. 65 (12) (2005) 1558-1577]. We show using a very simple example that their approach does not always produce a solution and that, when it does, the solution is often suboptimal. We also show how to find an optimal scheduling for any instance, once the number of installments per load is given. Finally, we formally prove that under a linear cost model, as in both the above-mentioned references, an optimal schedule has an infinite number of installments. Therefore such a cost model should not be used to design practical multi-installment algorithms.
English to Turkish Example-Based Machine Translation with Synchronous SSTC
Authors: N. Deniz, Çigdem Turhan
Venue: Proceedings of the Fifth International Conference on Information Technology: New Generations (2008)

Example Based Machine Translation (EBMT) is a corpus-based method which is based on using previously translated text. In this project, English to Turkish EBMT system has been developed which uses the Synchronous SSTC for the representation of the sentences in the parallel corpora. This method proves to be effective especially in structurally different languages such as English and Turkish.
A vector gravitational force model for classification
Authors: Yang Zong-chang
Venue: Pattern Analysis Applications (2008)

The paper presents a decision algorithmic model called vector gravitational force model in the feature space. The algorithmic model, inspired by and similar to the Law of Universal Gravitation, is derived from the vector geometric analysis of the linear classifier and established in the feature space. Based on this algorithmic model, we propose a classification method called vector gravitational recognition. The proposed method is applied to the benchmark Glass Identification task in the UCI Database available from USA Forensic Science Service, and other two UCI benchmark tasks. The experimental and comparative results show that the proposed approach yields quite good results and outperforms some well known and recent approaches on the tasks, and other applications may benefit from ours.
ANALYSIS OF MELODY ROOTS IN HUNGARIAN FOLK MUSIC USING SELF-ORGANIZING MAPS WITH ADAPTIVELY WEIGHTED DYNAMIC TIME WARPING
Authors: Zoltán Juhász
Venue: Applied Artificial Intelligence (2007)

In the present paper, we describe a method for extracting certain basic note sequences that should function as stable starting points for variations in Hungarian folk music. The database of our study contains melody section contours constructed from digitized notes of 2323 Hungarian folk songs. Using these contour sequences, a self-organizing map (SOM) was trained to determine typical note sequences appearing in many individual melody sections. To identify these "roots" in different parts of melody sections, we worked out a version of dynamic time warping with adaptive weights for the purpose of the distance function of the SOM. The resulting melody roots proved to be of clear and self-contained musical meaning, and they correspond to the results of classical ethnomusicology. The system of the roots can be interpreted as a condensed form of the main information of the studied musical culture.
MicroElectroMechanical Systems (MEMS) Based Wavelength-Selective Building Block in a Transparent Network Architecture
Authors: Yuan Ma
Venue: Proceedings of the Communication Networks and Services Research Conference (2008)

The wide deployment of Dense Wavelength Division Multiplexing (DWDM) optical network is inevitable with ever expanding internet and wireless traffic. Conventional optical network components, such as discrete switch, and variable attenuator, are becoming increasingly unattractive, expensive, and very often, infeasible to be used for the implementation of a communication system with such high channel density. For years, MicroElectroMechanical Systems (MEMS) technology has been a critical player for many discrete network functions with unmatched performance on chromatic dispersion, insertion loss, speed and reliability. An often over-looked character of MEMS is its large scale integratibility, which provides a unique potential solution for developing building blocks of fundamental DWDM functions. Several important MEMS applications in DWDM will be reviewed with emphasis on critical functions such as wavelength switching, wavelength interleaver, multi-channel add, drop, multiplexing and demultiplexing.
All eyes on the monitor: gaze based interaction in zoomable, multi-scaled information-spaces
Authors: Emilie Mollenbach, Thorarinn Stefansson, John Paulin Hansen
Venue: Proceedings of the 13th international conference on Intelligent user interfaces (2008)

The experiment described in this paper, shows a test environment constructed with two information spaces; one large with 2000 nodes ordered in semi-structured groups in which participants performed search and browse tasks; the other was smaller and designed for precision zooming, where subjects performed target selection simulation tasks. For both tasks, modes of gaze- and mouse-controlled navigation were compared. The results of the browse and search tasks showed that the performances of the most efficient mouse and gaze implementations were indistinguishable. However, in the target selection simulation tasks the most efficient gazecontrol proved to be about 16% faster than the most efficient mouse-control. The results indicate that gaze-controlled pan/zoom navigation is a viable alternative to mouse control in inspection and target exploration of large, multi-scale environments. However, supplementing mouse control with gaze navigation also holds interesting potential for interface and interaction design.
Satellite-based assessment of the dynamics of new lakes in southern Egypt
Authors: J. W. Chipman, T. M. Lillesand
Venue: International Journal of Remote Sensing (2007)

Lakes in arid landscapes are indicators of environmental change and important sources of water for human use. In regions without in situ hydrologic measurements, remote sensing may provide the only means to monitor long-term changes in water storage. We used a synergistic combination of multiple satellite remote-sensing methods to provide the first comprehensive assessment of the dynamics of a newly formed chain of large lakes in the hyper-arid Toshka Depression of southern Egypt. A total of 145 MODIS and AVHRR satellite images were used to monitor changes in lake surface area, which increased to a maximum of 1740 km2 before declining to 900 km2. Two methods were tested for satellite-based measurement of lake levels and volumes, one based on analysis of a digital elevation model and one using data from the ICESat GLAS laser altimeter. This study shows the power of satellite remote sensing for long-term monitoring of regional-scale hydrologic transformations.
A Proposal of Quasi-Static Approach for Analyzing the Stability of IP Telephony Systems
Authors: Masaki Aida, Chisa Takano, Masayuki Murata, Makoto Imase
Venue: Proceedings of the Seventh International Conference on Networking (2008)

Troubles in commercial IP telephony systems were reported one after another recently in Japan. One of important causes is congestion of control plane. In the current Internet, it has been recognized that controlling congestions caused by overload of control plane becomes important in addition to congestions caused by overload of data plane. In particular, since input traffic including retries tends to cause overload, it is an important issue to avoid congestion from retry traffic. In this paper, we focus on an RSVP-based communication model that is a combination of transmission and processing systems and consider the behavior of retry traffic. In general, users reattempt to set up connections not only when transmission systems are overloaded but also when processing systems in the network are overloaded. The latter is caused by user psychology: an increase in the waiting time for the processing to be completed tends to increase his or her reattempts. Thus, it is important to know interactions between users and the system and to manage both transmission and processing resources properly. Since both traditional Markov approach and simulation technique are difficult to handle these issues, we propose a new approach, quasi-static approach, for analyzing the stability of the RSVP model. This approach is based on the concept of decomposition of timescales like statistical physics. System behaviors are described as a combination of macroscopic behavior described in a human perceptible timescale and microscopic behavior described in a shorter timescale characterized by system's state transitions. Using our approach, we demonstrate the evaluation of IP telephony systems as an example of the RSVP model and show system down probabilities of very small values.
A data allocation scheme for multiple wireless broadcast channels
Authors: Sung-wook Park, Sungwon Jung
Venue: Proceedings of the 2nd international conference on Ubiquitous information management and communication (2008)

Broadcast in the wireless environment has drawn much attention because it is capable of sending data to clients regardless of the number of clients. Most previous researches have aimed at obtaining an independent data item in a minimum time. However, the access probability of each data item based on query request probability has not been dealt with although a few studies have reported on allocating dependent data in different time and channels. This paper proposes a new method of allocating data items and simultaneously reducing average response time required in receiving all the dependent data items in a query. Our performance analysis shows that our proposed method gives better average response time over the existing methods.
Predicting aphid (Lipaphis erysimi) growth in oilseed Brassica using near surface meteorological data from NOAA TOVS-a case study
Authors: B. K. Bhattacharya, S. Dutta, V. K. Dadhwal, J. S. Parihar, C. Chattopadhyay, R. Agrawal, V. Kumar, S. A. Khan, S. Roy, C. Shekhar
Venue: International Journal of Remote Sensing (2007)

Pest infestation in crops is highly influenced by agrometeorological parameters. Weather based early warning of pest infestation is being practised using statistical and dynamic simulation models on point scale. Satellite based inputs and epidemiological models can extend the application to areas with irregular and non-existing ground observations. The present study describes the use of National Oceanic and Atmospheric Administration TIROS (Television and InfraRed Operational Satellites) Operational Vertical Sounder (TOVS) near surface air temperature at 1430 h Local Apparent Time (LAT) over India (0900 Universal Time Code) for modelling onset, build-up and peak aphid (Lipaphis erysimi) infestation on Indian Mustard (Brassica juncea) crop over Bharatpur and Kalyani, falling in semi-arid and sub-humid regions, respectively. The daily cumulative TOVS air temperature from 1 October 2001 showed high correlation (R 2: 0.99) with observed datasets. Exponential relationships were found to be the best empirical fit between TOVS cumulative air temperature (CATTOVS) and crop age at aphid onset (R 2: 0.7-0.99) and peak infestation (R 2: 0.91-0.95) for two stations representing semi-arid (Bharatpur) and sub-humid (Kalyani) agroclimatic conditions. Second order polynomial fits were found (R 2: 0.81-0.85) at both the stations between peak aphid count and CATTOVS at peak. Estimates of intermediate linear aphid build-up to peak, computed using location-specific linear growth rate (LGR) showed a higher standard error (SE) of 20% of mean at Kalyani (0-99), compared to 8% at Bharatpur (4-58). The common prediction models on linear start and peak were developed using TOVS noon time specific humidity (SPH) weighted thermal units and sowing dates. The standard error (SE) of estimated intermediate aphid-build-up became less: 4.5% of observed mean counts for pooled datasets with a common model, irrespective of sowing dates. The correlation between estimates and observations was 71%. The common model will be useful for general application in the absence of availability of local models.
Reliability criteria in information theory and in statistical hypothesis testing
Authors: Evgueni A. Haroutunian, Mariam E. Haroutunian, Ashot N. Harutyunyan
Venue: Foundations and Trends in Communications and Information Theory (2007)

This survey is devoted to one of the central problems of Information Theory -- the problem of determination of interdependence between coding rate and error probability exponent for different information transmission systems. The overview deals with memoryless systems of finite alphabet setting. It presents material complementary to the contents of the series of the most remarkable in Information Theory books of Feinstain, Fano, Wolfowitz, Gallager, Csiszar and Körner, Kolesnik and Poltirev, Blahut, Cover and Thomas and of the papers by Dobrushin, Gelfand and Prelov. We briefly formulate fundamental notions and results of Shannon theory on reliable transmission via coding and give a survey of results obtained in last two-three decades by the authors, their colleagues and some other researchers. The paper is written with the goal to make accessible to a broader circle of readers the theory of rate-reliability. We regard this concept useful to promote the noted problem solution in parallel with elaboration of the notion of reliability-reliability dependence relative to the statistical hypothesis testing and identification.
Multifocus image fusion by combining curvelet and wavelet transform
Authors: Shutao Li, Bin Yang
Venue: Pattern Recognition Letters (2008)

When an image is captured by CCD device, only the objects at focus plane would appear sharp. A practicable way to get an image with all objects in focus is to fuse images acquired with different focus levels of the scene. In this paper, we propose a multifocus image fusion algorithm based on combination of wavelet and curvelet transform. Although the fused results obtained by wavelet or curvelet transform individually are encouraging, there is still large room for further improvement because wavelets do not represent long edges well while curvelets are challenged with small features. So in the proposed method, these two methods are combined together. Each of the registered images is decomposed using curvelet transform firstly. Then the coefficients are fused using wavelet-based image fusion method. Finally, the fused image is reconstructed by performing the inverse curvelet transform. The experimental results on several images show that the combined fusion algorithm exhibits clear advantages over any individual transform alone.
A multi-stream adaptation framework for bandwidth management in 3D tele-immersion
Authors: Zhenyu Yang, Bin Yu, Klara Nahrstedt, Ruzena Bajscy
Venue: Proceedings of the 2006 international workshop on Network and operating systems support for digital audio and video (2006)

Tele-immersive environments will improve the state of collaboration among distributed participants. However, along with the promise a new set of challenges have emerged including the real-time acquisition, streaming and rendering of 3D scenes to convey a realistic sense of immersive spaces. Unlike 2D video conferencing, a 3D tele-immersive environment employs multiple 3D cameras to cover a much wider field of view, thus generating a very large volume of data that need to be carefully coordinated, organized, and synchronized for Internet transmission, rendering and display. This is a challenging task and a dynamic bandwidth management must be in place. To achieve this goal, we propose a multi-stream adaptation framework for bandwidth management in 3D tele-immersion. The adaptation framework relies on the hierarchy of mechanisms and services that exploits the semantic link of multiple 3D video streams in the tele-immersive environment. We implement a prototype of the framework that integrates semantic stream selection, content adaptation, and 3D data compression services with user preference. The experimental results have demonstrated that the framework shows a good quality of the resulting composite 3D rendered video in case of sufficient bandwidth, while it adapts individual 3D video streams in a coordinated and user-friendly fashion, and yields graceful quality degradation in case of low bandwidth availability.
A comparison of ontology reasoning systems using query sequences
Authors: Chulki Lee, Sungchan Park, Dongjoo Lee, Jae-won Lee, Ok-Ran Jeong, Sang-goo Lee
Venue: Proceedings of the 2nd international conference on Ubiquitous information management and communication (2008)

A number of ontology reasoning systems have been developed for reasoning and querying the semantic web. Since they implement different reasoning algorithms and optimization techniques, they differ in a number of ways. Previous attempts at comparing performance of ontology reasoning systems have mainly considered performances of individual query requests. In this paper, we present the results of testing four of the most popular ontology reasoning systems on query sequences that reflect real world use cases. We believe that using query sequences is a more effective way to evaluate ontology reasoning systems.