The capability of multidestination wormhole allows a message to be propagated along any valid path in a wormholerouted network conforming to the underlying base routing scheme. The multicast on the path-based routing model is highly dependent on the spatial locality of destinations participating in multicasting. In this paper, we propose two proximity grouping schemes for ecient multicast in w...

A statistical query rst manipulates source category data to build a target category in the form of a grouping relation and then performs statistical functions on the associated measurement data. In this paper, the attributes in a grouping relation are partitioned into pair-wise disjoint sets, each called a dimension. A grouping relation is said to be orthogonal if it is equal to the cross produ...

S. E. Guttman, L. A. Gilroy, and R. Blake (2005) investigated whether observers could perform temporal grouping in multi-element displays where each local element was stochastically modulated over time along one of several potential dimensions--or "messenger types"--such as contrast, position, orientation, or spatial scale. Guttman et al.'s data revealed that grouping discards messenger type an...

Recent experimental results suggest that human and nonhuman primates differ in how they process visual information to assemble component parts into global shapes. To assess whether some of the observed differences in perceptual grouping could be accounted for by the prevalence of different grouping factors in different species, we carried out 2 experiments designed to evaluate the relative use ...

In our previous work, we demonstrated the possible performance gains from update-based cache coherence protocols for a set of fine-grain scientific applications running on a scalable sharedmemory multiprocessor. In this paper, we examine in detail the hardware-based write grouping scheme presented in our earlier work. First we describe both software-based and hardwarebased write grouping scheme...

One important task for the visual system is to group image elements that belong to an object and to segregate them from other objects and the background. We here present an incremental grouping theory (IGT) that addresses the role of object-based attention in perceptual grouping at a psychological level and, at the same time, outlines the mechanisms for grouping at the neurophysiological level....

Across the visual field, progressive differences exist in neural processing as well as perceptual abilities. Expansion of stimulus scale across eccentricity compensates for some basic visual capacities, but not for high-order functions. It was hypothesized that as with many higher-order functions, perceptual grouping ability should decline across eccentricity. To test this prediction, psychophy...

During binocular rivalry, perception alternates between dissimilar images presented dichoptically. Although perception during rivalry is believed to originate from competition at a local level, different rivalry zones are not independent: rival targets that are spaced apart but have similar features tend to be dominant at the same time. We investigated grouping of spatially separated rival targ...

One major feature of the prosody of Mandarin Chinese speech flow is prosodic phrase grouping [1, 2, and 3]. Phrasal and sentential intonations are governed by a prosody framework that structurally group phrases into a larger/longer and identifiable unit. An overall prosody pattern of such phrase grouping with prosodic specifications is superimposed on phrase group. In turn, individual phrasal i...

-A hitherto unappreciated correlation exists between nature of vessel grouping and nature of imperforate tracheary elements in wood of dicotyledons at large: families and genera with true tracheids (large fully bordered pits common on both radial and tangential walls) have solitary vessels. Presence of true tracheids as a subsidiary conductive system is hypothesized to render vessel grouping a ...