A heterogeneous cluster can incur the performance degradation caused by the load unbalance in executing the application for homogeneous cluster. The total execution time can be sometimes improved by neglecting some of the PEs because communication time is reduced. This study examines to invoke multiple processes on fast processing elements (PEs) to avoid load unbalance. In this study, the execu...

The purpose of the project is to design and develop a GUI (graphical user interface) based Driver information system. Instrument clusters are the traditional readout meters available in the dashboard of cars and motorbikes. In regard of the conventional meters that are in existence, the analog meters have disadvantages in lack of storage capability and accuracy whereas digital meters have displ...

In a collaborative project with Tacton AB, we have investigated new ways of assisting the user in the process of on-line product configuration. A web-based prototype, RIND, was built for ephemeral users in the domain of PC configuration. Two mechanisms were added to a commercial configurator produced by Tacton: i) automated recommendations that display social trails associated with the configur...

This paper investigates the new problem of automatic sense induction for instance names using automatically extracted attribute sets. Several clustering strategies and data sources are described and evaluated. We also discuss the drawbacks of the evaluation metrics commonly used in similar clustering tasks. The results show improvements in most metrics with respect to the baselines, especially ...

We describe and evaluate a discriminative clustering approach for content-based tag recommendation in social bookmarking systems. Our approach uses a novel and efficient discriminative clustering method that groups posts based on the textual contents of the posts. The method also generates a ranked list of discriminating terms for each cluster. We apply the clustering method to build two cluste...

We compare coupled-cluster (CC) and configuration-interaction (CI) results for (56)Ni obtained in the pf-shell basis, focusing on practical CC approximations that can be applied to systems with dozens or hundreds of correlated fermions. The weight of the reference state and the strength of correlation effects are controlled by the gap between the f(7/2) orbit and the f(5/2), p(3/2), p(1/2) orbi...

Clusters of Hall thrusters may be used to produce electric propulsion systems capable of operating at power levels in excess of the current state of the art. One of the key factors to be considered in determining the optimum cluster architecture is the configuration of the electron-emitting cathode(s). This work presents experimentally determined plume properties and discharge current character...

Although heterogeneous clusters are flexible and cost-effective, they entail intrinsic difficulties in optimization. Whereas it is simple to invoke multiple processes on fast processing elements (PEs) to alleviate load imbalance, the optimal process allocation is not obvious. Communication time is another problem. Though it is sometimes better to exclude slow PEs to avoid performance degradatio...

We present a scheme for online, unsupervised state discovery and detection from streaming, multifeatured, asynchronous data in high-frequency financial markets. Online feature correlations are computed using an unbiased, lossless Fourier estimator. A high-speed maximum likelihood clustering algorithm is then used to find the feature cluster configuration which best explains the structure in the...