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667 results about "Selection algorithm" patented technology

In computer science, a selection algorithm is an algorithm for finding the kth smallest number in a list or array; such a number is called the kth order statistic. This includes the cases of finding the minimum, maximum, and median elements. There are O(n)-time (worst-case linear time) selection algorithms, and sublinear performance is possible for structured data; in the extreme, O(1) for an array of sorted data. Selection is a subproblem of more complex problems like the nearest neighbor and shortest path problems. Many selection algorithms are derived by generalizing a sorting algorithm, and conversely some sorting algorithms can be derived as repeated application of selection.

Method for selecting user stay and relay node of central control wireless relay network

The present invention relates to a selection method of a user resident mechanism pf a wireless multi-hop relay network and synergy relay nodes centralizedly controlled by the base station. The present invention provides a user resident mechanism, uses thefriendly relay nodes relay and control the signaling transmission to complete; at the same time provides a relay node selection method of carrying out the centralized control and management to the entire relay node selection process by the base station, which is carried in synergies through potential relay nodes and the target terminal. The identification and selection of the relay node are divided into two steps: the first step is to identify the appropriate relay nodes, to constitute an alternative assembly; and the second step is to select a relay nodes subset to tansmit the carrying business from the alternative assembly according to the multi-optimization objective selection algorithm, and contemporarily completing the business carrying configuration of the relay nodes in the subset based on the business properties, as well as the hollow characteristics. The method not only focuses on a two-hop wireless relay network, but also can extend to the multi-hop wireless relay networks, or even extends to a wireless Mesh network and a wireless sensor network.
Owner:COMBA TELECOM SYST CHINA LTD

Sparse dynamic ensemble selection-based SAR (synthetic aperture radar) image terrain classification method

The invention discloses a sparse dynamic ensemble selection-based SAR (synthetic aperture radar) image terrain classification method, which mainly solves the problem that the speed of the conventional dynamic ensemble selection algorithm and the conventional dynamic classifier selection algorithm for terrain classification in SAR images is low. The implementation process of the sparse dynamic ensemble selection-based SAR image terrain classification method is as follows: (1) a wavelet energy feature is extracted from an SAR image to be classified; (2) training data is acquired from the SAR image to be classified; (3) the SAR image to be classified is regionalized to obtain data to be classified; (4) training samples are utilized to learn ensemble systems; (5) a dictionary is learnt for each class of training data, and a synthetic dictionary is obtained; (6) dynamic ensemble selection is carried out on each atom in the synthetic dictionary; (7) samples to be classified are sparsely coded; (8) the samples to be classified are marked according to a sparse coefficient and classifier ensembles corresponding to the atoms; (9) the marks of the samples to be classified are mapped onto pixels in the SAR image, so that a terrain classification result is obtained. The sparse dynamic ensemble selection-based SAR image terrain classification method has the advantages of high speed and good classification effect, and can be used for SAR image target identification.
Owner:XIDIAN UNIV

Medium-term and long-term combined power generation optimal scheduling method and system in cascade reservoir group

The invention discloses a medium-term and long-term combined power generation optimal scheduling method and a medium-term and long-term combined power generation optimal scheduling system in a cascade reservoir group. The method comprises the following steps that: S1, a scheduling server establishes and stores three medium-term and long-term optimal scheduling models, namely a model of largest cascade power generation capacity, a model of largest cascade power generation capacity which gives consideration to guaranteed output, and a model of largest cascade energy storage; S2, the scheduling server selects an optimal medium-term and long-term optimal scheduling model according to a power generation optimal objective; S3, a data acquisition device acquires materials required for solving the models, and the scheduling server solves the medium-term and long-term optimal scheduling models by selecting algorithms; and S4, the scheduling server generates and outputs a medium-term and long-term power generation scheduling optimal scheme. By the method and the system, the phenomenon that a large quantity of optimization variables and constraint conditions of cascade reservoir optimal scheduling influence computational efficiency and result reasonability can be avoided; and an optimal medium-term and long-term combined power generation optimal scheduling scheme is obtained.
Owner:GUIZHOU WUJIANG HYDROPOWER DEV

Controlled terminal controlled decision-making method and apparatus based on multiple intelligent remote controllers

The invention brings forward a controlled terminal controlled decision-making method and apparatus based on multiple intelligent remote controllers, for simultaneously controlling one device (hereinafter simplified as a controlled terminal) through the multiple intelligent remote controllers (such as a mobile phone and various embedded remote controllers). The apparatus comprises a controlled decision-making module embedded in the controlled terminal and remote control modules on the intelligent remote controllers. The controlled decision-making module comprises a massage processing module, an intelligent remote controller discovery module, an intelligent remote controller selection module, a public application interface module and the like. The method is as follows: arranging different priority permissions for information; the controlled terminal receiving control instructions and identity information which are sent by the multiple intelligent remote controllers; and according to the selection priority permissions of the identity information, selecting a final intelligent remote controller, and executing the control construction sent by the selected intelligent remote controller. Different selection algorithms can be selected according to needs. By using the method and apparatus, the demand for application of a signal controlled terminal by multiple remote controllers can be satisfied, and conflict-free control over the controlled terminal by the intelligent remote controllers is realized.
Owner:SOUTH CHINA UNIV OF TECH
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