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.
Fast data analytics at an increasingly large scale has become a critical task in any Internet service company. For example, in Baidu, the major search engine company in China, large volumes of Web and business data in PB-scale are timely and constantly acquired and analyzed for the purposes of evaluating product revenue, tracking product demanding activities on market, predicting user behavior, upgrading...
For text-independent short-utterance speaker recognition (SUSR), the performance often degrades dramatically. This paper presents a combination approach to the SUSR tasks with two phonetic-aware systems: one is the DNN-based i-vector system and the other is our recently proposed subregion-based GMM-UBM system. The former employs phone posteriors to construct an i-vector model in which the shared statistics...
Firstly, a complex network model of participants in the open source design community OpenIDEO is built, and the network index such as degree and degree distribution of complex network model are analyzed. By clustering analysis based on the network index, participants are divided into three categories, respectively the core users, information dissemination users and ordinary users. In addition, we...
The foundation of a data processing engine running on a large cluster is its programming model that defines data processing operations and data movements. A special kind of communication activities that are not normally defined in the programming model but are often used in ad hoc ways in system development, is called out-of-band communications. The existing ad hoc solutions of out-of-band communications...
Leaf area index (LAI) and evapotranspiration (ET) are two crucial biophysical variables related to crop growth and grain yield. This study presents a crop model–data assimilation framework to assimilate the 1-km moderate resolution imaging spectroradiometer (MODIS) LAI and ET products (MCD15A3 and MOD16A2, respectively) into the soil water atmosphere plant (SWAP) model to assess the potential for...
To properly manage the variability of wind generation, this paper presents an adaptive procedure for short-term forecasting of wind speed based on recursive least squares. Firstly, hourly wind speed data are transformed to make their distribution approximately Gaussian and standardized to remove the diurnal nonstationarity. Then, the procedure fits an AR model to the standardized transformed hourly...
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.