This article presents the performance evaluation of INUKTITUT, an interface that allows effectively and easily carrying of parallel programming highlevel environments such as Athapascan on the computing clusters. INUKTITUT contains functions for multithreading and for communications: the intra-node parallelism of processes is managed by threads communicating via shared memory; the inter-node pa...

The simulation of communication networks using a continuous-state, or fluid modeling approach, has shown to be very efficient for a wide range of performance evaluation scenarios. In this paper we present a fluid model of the RED active queue management algorithm for FluidSim, a simulation tool based on the fluid paradigm. We compare the behavior and efficiency of our model against the results ...

This paper compares the performances of the binocular cues of stereo and vergence, and the monocular cue of focus for range estimation using an active vision system. The performance of each cue is characterized in terms of sensitivity to errors in the imaging parameters. The effects of random, quantizatiain errors are expressed in terms of the standard deviation of the resulting: depth error. T...

Tracking in 3D with an active vision system depends on the performance of both motor control and vision algorithms. Tracking is performed based on different visual behaviors, namely smooth pursuit and vergence control. A major issue in a system performing tracking is its robustness to partial occlusion of the target as well as its robustness to sudden changes of target trajectory. Another impor...

Active 3-D vision systems, such as laser scanners and structured light systems, obtain the object coordinates from external information such as scanning angles, time of flight, or shape of projected patterns. Passive systems require well-defined features such as targets and edges and are affected by ambient light. Therefore, they have difficulty with sculptured surfaces and unstructured environ...

This paper is concerned with the question of how to online combine an ensemble of active learners so as to expedite the learning progress during a pool-based active learning session. We develop a powerful active learning master algorithm, based a known competitive algorithm for the multi-armed bandit problem and a novel semi-supervised performance evaluation statistic. Taking an ensemble contai...

An image-processing pipeline for the automated segmentation of yeast cells in microscopy images is proposed. The method is suitable for the non-invasive detection of individual cells in transmission data which can be acquired simultaneously with fluorescence data. It moreover takes the varying quality and highly heterogeneous characteristics of cells in transmission images into account, is capa...

This paper uses the BEAST benchmark to present the first comprehensive performance study of object-oriented active database management systems (ADBMS). BEAST stresses the performance-critical components of active systems: event detection, event composition, rule retrieval, and rule firing. Method invocation events and transactional events are taken into account. Four systems, namely ACOOD, NAOS...

To cope with computing power limitations, air quality models that are used in integrated assessment applications are generally approximated by simpler expressions referred to as "source-receptor relationships (SRR)". In addition to speed, it is desirable for the SRR also to be spatially flexible (application over a wide range of situations) and to require a "light setup" (based on a limited num...

Performative control of voice is the process of real-time speech synthesis or modification by the means of hands or feet gestures. Vokinesis, a system for real-time rhythm and pitch modification and control of singing is presented. Pitch and vocal effort are controlled by a stylus on a graphic tablet. The concept of Syllabic Control Points (SCP) is introduced for timing and rhythm control. A ch...