The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Cross-matching astronomical catalogs is a central operation in astronomical data integration and analysis. As current commodity clusters typically consist of heterogeneous processors including both multi-core CPUs and GPUs, we study how to efficiently cross-match large astronomical catalogs on such clusters. Specifically, we develop a three-phase common algorithm for parallel cross-match, and optimize...
In astronomical observatory projects, raw images are processed so that information about the celestial objects in the images is extracted into catalogs. As such, this source extraction is the basis for the various analysis tasks that are subsequently performed on the catalog products. With the rapid progress of new, large astronomical projects, observational images will be produced every few seconds...
We present the I3DC system prototype, which constructs the cube for tens of millions of data items within milliseconds, and provides high-quality cube visualization as well as highly-interactive OLAP operations. Our approach is based on a novel blending-as-aggregation (BAA) algorithm that maps distributive OLAP aggregations to the intrinsic rendering mechanisms of the GPU. Our system runs entirely...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.