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 software defined optical network (SDON) service plays an important role in the production and operation of the network system. It's important to solve the problem of how to reduce the risk and distribute the service path more rationally. However, most of the existing algorithms do not take into account service importance. In this paper, a risk balancing routing assignment mechanism based service...
The EDCA protocol was designed to enhance the functionality of the IEEE 802.11 WLAN through the introduction of different channel access parameter values for different traffic types. This enables some degree of service guarantee for traffic depending on their QoS requirements. While the improved standard has recommended values for the channel accessing parameters, it does not take into account the...
In this paper, a new gradient optimized blind source separation algorithm (GOA) which aims at improving the convergence performance is proposed. This algorithm modifies the gradient of cost function to make the iteration process of separation matrix closer to its change pattern. To be more specific, by adding the difference value between current time gradient and previous time gradient to the adaptive...
Top-k queries have been studied mainly from the perspective of the user. Many researchers have focused on improving the efficiency of top-k problems. However, few studies have focused on the essential factors required for manufacturers to assess the potential market. A novel query type, namely, the reverse top-k, is used to assess the potential market and help manufacturers calculate the impact of...
Ground truth is crucial in the performance evaluation of algorithms. Nevertheless, it is a tedious and time-consuming task to annotate ground truth manually, especially in crowd scenes. In this paper, we propose a novel semi-automatic tool called SAGTA (Semi-automatic Ground Truth Annotation Tool), which can assist researchers to annotate pedestrians easily and quickly in crowd scenes. Firstly, users...
Ascertainable clustering number is one of the vital problems of spectral clustering. To solve this problem, a spectral clustering algorithm automatically determining the clustering number is proposed. By mapping the sample point of the data set into feature space, the orthogonal positional relationship of sample points between different clusters in the feature space can be determined. Based on the...
In this study, we propose the concept of dynamics-based visual inspection for the verification of structural dynamic properties of a vibrating object; the inspection method involves the analysis of the vibration distribution of the object by using a high-frame-rate video. Under unknown ambient excitation, modal parameters of an excited object are simultaneously estimated to determine its input-invariant...
We can find potential relationship behind the data by data mining for e-commerce, so adjust dynamically web page structure, improve service, and meet better consumer demand. This paper discusses the data resources used by data mining in e-commerce and their characteristics, gives the basic process of data mining, analysing e-commerce data mining techniques used, at last points out the current problems...
In this paper, we analyze some characteristics of parallel dense matrix operations which include data structure of matrix, distributing strategy of parallel memory space and boundary processing of matrix. Then the matrix inversion algorithm and its efficiency are given. Meanwhile, the differentiation of this matrix inversion algorithm and the algorithm of PLAPACK software package is compared, and...
A robust algorithm for license plate location is proposed, on the basis of connected edge analysis in conjunction with a novel adaptive preprocessing technique. Firstly, with non-conglutination feature of connected edge produced by license plate characters in binarized vertical edge image, filtering and row-scanning location are conducted. Adaptive preprocessing function is then introduced. An input...
DES (data encryption standard) is a cryptographic standard. However, the applications of it are limited because of the small key space. Based on irrational numbers, an improved scheme that enhances the randomness of sub-key is proposed, in which the permutation is controlled by irrational number which is considered as false chaos. Moreover, the permutation controlled by data can be performed at high...
DES (Data Encryption Standard) is a cryptographic standard. However, the applications of it are limited because of the small key space. Based on irrational numbers, an improved scheme that enhances the randomness of sub-Key is proposed, in which the permutation is controlled by irrational number which is considered as false chaos. Moreover, the permutation controlled by data can be performed at high...
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.