34671312
Hugin - The Tool for Bayesian Networks and Influence Diagrams
9385354
The Hugin Tool for Learning Bayesian Networks
In this paper, we describe the Hugin Tool as an efficient tool for knowledge discovery through construction of Bayesian networks by fusion of data and domain expert knowledge. The Hugin Tool supports structural learning, parameter estimation, and adaptation of parameters in Bayesian networks. The performance of the Hugin Tool is illustrated using real-world Bayesian networks, commonly used examples from the literature, and randomly generated Bayesian networks.
6168223
A Survey of Multimedia and Web Development Techniques and Methodology Usage
The authors present survey results which suggest that no uniform approach exists for multimedia systems development and that practitioners are not using the multimedia models cited in the literature. It is concluded that developers need new techniques that capture requirements and integrate them within a systems development framework.
15679317
Using Performance Modeling to Design Large-Scale Systems
A methodology for accurately modeling large applications explores the performance of ultrascale systems at different stages in their life cycle, from early design through production use.
120859220
Analysis of trapped entanglements in polymer networks
This work reviews different standard methods to analyze trapped entanglements of polymer networks and discusses their advantages and drawbacks with respect to simplicity, computing time and accuracy of the results. Since this standard analysis is based on the pairwise test of closed cycles, two algorithms for the determination of these cycles are introduced and compared. The decomposition into meshes creates unsolved problems regarding the non-ambiguity and the completeness of the received results. Examples are given in order to show their effects and to start further discussion to receive more convenient methods. As one possible solution Vassiliev's invariants are discussed and an approximation method is introduced to correct the possible multiple counting of entanglements.
15721477
Implementation and performance modeling of deterministic particle transport (Sweep3D) on the IBM Cell/B.E
The IBM Cell Broadband Engine (BE) is a novel multi-core chip with the potential for the demanding floating point performance that is required for high-fidelity scientific simulations. However, data movement within the chip can be a major challenge to realizing the benefits of the peak floating point rates. In this paper, we present the results of implementing Sweep3D on the Cell/B.E. using an intra-chip message passing model that minimizes data movement. We compare the advantages/disadvantages of this programming model with a previous implementation using a master–worker threading strategy. We apply a previously validated micro-architecture performance model for the application executing on the Cell/B.E. (based on our previous work in Monte Carlo performance models), that predicts overall CPI (cycles per instruction), and gives a detailed breakdown of processor stalls. Finally, we use the micro-architecture model to assess the performance of future design parameters for the Cell/B.E. micro-architecture. The methodologies and results have broader implications that extend to multi-core architectures.
18442685
Techniques and Methodologies for Multimedia Systems Development: A Survey of Industrial Practice
This paper tries to answer the question, how are multimedia systems being developed in practice? Herein are reported the findings of a preliminary postal survey of the top 1,000 companies from general industry and the principal 100 companies from the multimedia industry in Ireland, which reveal that there is no uniform approach to multimedia systems development and that approaches prescribed by the literature are not being used in practice. Nonetheless, the findings are clear that practitioners are favorably inclined toward the use of systematic methods and techniques for multimedia development. This survey paves the way for more detailed and insightful qualitative research into development practices.