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- If some particles trended to local extremum in PSO algorithm implementation, the particle velocity was updated and re-initialized. 在PSO算法的运行过程中,对有集聚倾向的粒子进行速度变异处理,重新初始化速度。
- In this paper,the feature of local extremum around the globe extremum is analyzed and the concept of security region is proposed for the theoretical basis of pre-registration. 利用特征点互信息理论,并结合多灰度级和多分辨率策略,提出一种基于混合优化算法寻优和特征点互信息预配准的改进型算法。
- Back Propagation(BP) neural network can be used to forecast Gyroscopic drift.But BP algorithm inclines to fall into local extremum and its training speed is very slow. 作为导航系统核心的惯性器件,陀螺仪在整个导航系统中起着十分重要的作用。
- However, the object function suffers from the local extremum induced by interpolation, which obstructs optimization algorithms and leads to the wrong result of registration. 但是当变换后像素坐标位于非采样网格点时,插值算法有时会使目标函数产生局部极值,使得最优化搜索终止于局部极值,得到错误的配准结果。
- However,the object function suffers from the local extremum induced by interpolation,which obstructs optimization algorithms and leads to the wrong result of registration. 但是当变换后像素坐标位于非采样网格点时,插值算法有时会使目标函数产生局部极值,使得最优化搜索终止于局部极值,得到错误的配准结果。
- It can not only overcome the disadvantage of easily getting into the local extremum in the later evolution period,but also keep the rapidity of the previous period. 所提出的算法将粒子群优化算法和混沌算法相结合,既摆脱了算法搜索后期易陷入局部极值点的缺点,同时又保持了前期搜索的快速性。
- At the same time, a Genetic Algorithm (GA) with complex encoding is used to compute the weight vectors, which not only avoids the local extremum but also improves the computing speed. 由于波束形成过程不需要正交化处理,避免了波束形成器锁定噪声的可能性。同时,采用一种复数编码的遗传算法来求解权向量,不但可避免陷入局部极值的可能性,而且还能有效提高运行速度。
- In order to converge to global optimum more quickly and not to plunge a local extremum, rank-based selection algorithm and arithmetic crossover operator and non-uniform mutation operator are adopted. 为了加快收敛速度和不陷入局部极值,采用了排序选择算法、算术交叉算子和非一致变异算子。
- The roof edge is detected by using local extremum of maximum main curvature along the direction of maximum main curva ture, and the direction of minimum main curvature is the trend of the roof edge. 通过屋脊边缘沿最大主曲率方向的最大主曲率局部极值检测屋脊边缘,同时最小主曲率的方向就是屋脊边缘的走向。
- The low discrepancy of quasi_random sequence ensures that the function field be searched evenly and various local extrema including global extremum be found. 同时;拟随机序列的低偏差性保证了函数定义域能够被均匀地搜索;为找到多个局部极值包括全局极值提供了保证.
- The interarrival times of adjacent signed local extrema are used to obtain an estimate of the mobile speed. 用相邻被标记的本地极大的中间到达次数来获得移动速度的估计值。
- The PBC conquers the deficiencies of BC which converges too slowly and falls into local extrema easily. 该算法克服了细菌趋药性算法收敛较慢、易陷入局部最优的不足,利用菌群之间的交互信息来修正其觅食过程。
- It is easy to fall into local extrema, and slow to converge.To cope with the problems, particle swarm optimization is developed. 粒子群算法只考虑目标函数,对初始模型的依赖程度不高,可以随机地在全局域内进行搜索。
- With this algorithm, the system can escape from the difficult of local extrema of the energy function and reach an optimal solution or its good approximations. 该算法在很大程度上摆脱了局域极值的束缚,得到了最优或接近最优的互连权。
- A syndicate of local businessmen is bidding for the contract. 一个当地企业家的联合组织在向这一合同投标。
- My husband is a history teacher at the local school. 我丈夫是本地学校的一位历史教师。
- His son was indentured to the local blacksmith. 他的儿子拜当地的铁匠为师签订了师徒合同。
- Barry is the new news hawk at the local newspaper. 巴利是这家地方报纸最新聘任的新闻记者。
- I booked my holiday through my local travel agent. 我是由本地的旅游代理人预先安排的度假事宜。
- He's a paint sprayer in the local factory. 他在当地工厂当喷漆工。