Graph clustering becomes an important problem due to emerging applications involving the web, social networks and bio-informatics. Recently, many such applications generate data in the form of streams. Clustering massive, dynamic graph streams is significantly challenging because of the complex structures of graphs and computational difficulties of continuous data. Meanwhile, a large volume of ...

In [1], our novel subspace distribution clustering hidden Markov model (SDCHMM) made its debut as an approximation to continuous density HMM (CDHMM). Deriving SDCHMMs from CDHMMs requires a definition of multiple streams and a Gaussian clustering scheme. Previously we have tried 4 and 13 streams, which are common but ad hoc choices. Here we present a simple and coherent definition for streams o...

Examining a portion of the northern Sloan Digital Sky Survey (SDSS) footprint, we detect at least three and possibly seven halo debris streams. One of these (PS1-D) was recently detected in the Pan-STARRS1 p 3 survey, and the remaining two are also evident as extensions of the SDSS detections. All of these streams are metal-poor and are found at a distance of around 21±5 kpc. The streams are ...

In point-to-point networks, real-time services are supported by sending real-time streams over guaranteed or best-effort channels [1]. A stream consists of packets moving across individual links on the point-topoint network from a given source to destination. For each link, a scheduler is responsible for determining which packets shall be transmitted according the queue of packets stored. For s...

Using the mitochondrial cytochrome oxidase I (COI) gene, we assessed the phylogeographic structure of Prosimulium neomacropyga, a black fly (Simuliidae) whose distribution in the US Southern Rockies ecoregion is limited to alpine tundra streams. Given high habitat specificity, lack of hydrological connection between streams, and a terrestrial environment restrictive to insect flight, we hypothe...

Small dams for hydropower have caused widespread alteration of Central American rivers, yet much of recent development has gone undocumented by scientists and conservationists. We examined the ecological effects of a small hydropower plant (Doña Julia Hydroelectric Center) on two low-order streams (the Puerto Viejo River and Quebradon stream) draining a mountainous area of Costa Rica. Operation...

Multimedia information is most often stored, browsed, and transmitted as simply “raw” data, a set of opaque files. Digital video and audio in particular benefit tremendously from “content-aware” processing; as the salient content information is often temporal in nature, we study both the extraction and applications of the temporal structure of media streams. We begin by examining some of the fu...

Hellinger distance has been successfully used as a tree splitting criterion in Hellinger Distance Decision Trees [10] (HDDT) for unbalanced static datasets. In unbalanced data streams, state-of-the-art techniques use instance propagation and standard decision trees to cope with the unbalanced problem. However it is not always possible to revisit/store old instances of a stream. We solve this pr...

We consider the possibility that the Galactic neutral hydrogen stream Complex A and the stellar Orphan stream are related, and use this hypothesis to determine possible distances to Complex A and the Orphan stream, and line-of-sight velocities for the latter. The method presented uses our current knowledge of the projected positions of the streams, as well as lineof-sight velocities for Complex...