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.
The clustering process in pattern mining of spatio-temporal trajectories is an important research content. Although there has existed extensive research on trajectory clustering, the efficiency of these algorithms is not able to meet the efficiency requirements faced with the large volumes of position data from moving objects. In order to improve the efficiency of clustering, this paper proposes two...
The recent proposed Adaptive Multi-Pulse Compression (AMPC) has been shown to successfully suppress both the range-Doppler sidelobes and clutter, but the implementation of AMPC is limited by the relatively high computational complexity in many current real-time systems. In this paper, a fast algorithm via dimensionality reduction approach is proposed for the proposed AMPC. Simulation results demonstrate...
Based on RS and GIS technology, use the landscape pattern analysis software FRAGSTATS3.3, analyzed landscape changes in Miyun county in 1990, 2000, 2009 nearly 20 years. From landscape structure, spatial distribution and relationship aspects discussed about the landscape changes. Using patch area index, path density index, edge density index, shape index, connection Index and cohesion index describe...
Backup technology based on data de-duplication has become a hot topic in nowadays. In order to get a better performance, traditional research is mainly focused on decreasing the disk access time. In this paper, we consider computing complexity problem in data de-duplication system, and try to improve system performance by reducing computing time. We put computing tasks on commodity coprocessor to...
This paper discussed about the process and method of sustainable land use spatialization. Divide the indicator into statistical indicator and geospatial indicator. Take Guyuan County, Kangbao County and Zhangbei County in Bashang region of Hebei province, China as examples, build a sustainable land use evaluation indicator. Evaluate the sustainable land use in Bashang region in 2003; the result can...
This paper presents a simple but powerful extension of the maximum margin clustering (MMC) algorithm that optimizes multivariate performance measure specifically defined for clustering, including normalized mutual information, rand index and F-measure. Different from previous MMC algorithms that always employ the error rate as the loss function, our formulation involves a multivariate loss function...
The formal publication of the latest brand new generation Microsoft .NET 3.5 framework indicates that this software giant is successful evolving on its plan. This paper introduces the technology based on .NET 3.5 framework and its new features, advocates service oriented architecture to construct and design network application program fast, then provides a system design of a green community Live Green...
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.