This algorithm improved performance by united - decision estimating according to the relations of several groups near data . in the condition of equal decoding performance , the modified algorithm can reduce size and power consumption 该算法通过利用viterbi译码相邻几组判决数据之间的相关性,提高了译码性能,从而在保证同等性能的条件下减小了硬件规模,降低了功耗。
This paper discusses the algorithm of rbfnn ( radial basis function neural network ) , especially modified rbfnn based on chaos genetic algorithm , and the modified algorithm application of building converter vanadium static model 本文详细论述了径向基神经网络算法及其基于混沌遗传优化的改进型径向基神经网络算法,以及该算法在转炉提钒静态模型的建立过程中的应用。
With references to tae - yong kue kwanghee nam and jin s . lee ' s [ 32 ] literatures , algorithm b was obtained after modifying algorithm a . the output signal of industrial robotic manipulator controller is correspondence with the torque provided by each joint Lee的研究成果,得到简化的机械手反馈迭代学习控制律(算法b ) 。摘要?工业机械手控制器的输出信号是与每个关节电机所需提供的转矩相对应的。
2 . studies on the wigner - hough transform in the suppression of cross - components , a modified algorithm is present based on adaptive gaussian kernel time - frequency distribution , this algorithm not only suppresses the cross - components but also has good performance in the low snr 研究了wigner - hough变换在抑制交叉项中的应用。通过对wigner - hough变换作一定的改进,提出了基于信号自适应高斯核时频分布的hough变换。
Compared with the classical algorithms , modified algorithms need fewer numbers of multiplications and less precision for filters . furthermore , modified algorithms are suitable for real - time application and realization because of similar structures of computing every sort of outputs 另外,改进的算法对滤波器系数的精度要求更低,而且,改进的算法非常适合于实时处理,各种输出的计算结构的类似也利于算法的实现。
I divide maximal crossing ambiguities into three sorts based on statistics of maximal crossing ambiguities from a large scale chinese corpus and adopt different methods to deal with them . this modified algorithm improves the ability to deal with maximal crossing ambiguities greatly 本课题在对大规模真实文本中的最大交集字段进行统计的基础上,将最大交集字段分为三类,并分别对其进行处理,极大的提高了对最大交集字段的处理能力。
Afterwards , in order to decrease the contradiction between the more complex and mass remote sensing image data and relatively slow speed of information extraction , an improved sfim image fusion method is proposed . this modified algorithm is on the base of sfim fusion technique , combines ihs method and sfim method and then replaces the former mean filter by an adaptive weighted mean filter . compared with the results of several common fusion techniques through a set of simulation tests between multispectral images and panchromatic images , it is proved that the new method can get an excellent result for the aim of improving spatial resolution while preserving the spectral information of multispectral images 论文的主要工作和成果包括:在像素层,论文研究了多传感器数据融合理论及遥感图像预处理的过程和步骤,归纳了多源遥感图像像素层融合的常用算法,并针对目前遥感数据呈海量化、复杂化这一发展趋势同遥感信息提取的能力和效率滞后这一矛盾,在sfim算法的基础上,将ihs变换与sfim相结合,将原算法中的均值滤波器改进为自适应加权均值滤波器,提出了一种改进的sfim算法,通过对一组多光谱图像和全色图像的双传感器融合仿真对比试验,证明了该算法在保持原多光谱图像光谱信息的同时,能够有效提高融合图像的空间分辨能力。
In this part , the author mainly introduces the theory of the image moment invariants and its current application , analyses the influence of scale factor on moment invariants features under the state of discrete and adopts a sort of modified algorithm to abstract the eigenvector of the objects " outline finally , the author uses bp network to classify the mode 该部分主要论述了图像不变矩的原理和应用现状,分析了在离散状态下比例因子对7个不变矩的影响,提出了一种的改进算法,并利用其提取了物体外形轮廓的特征向量,最后用bp网络进行了模式分类。
Abstract : based on the iterative bit - filling procedure , a computationally efficient bit and power allocation algorithm is presented . the algorithm improves the conventional bit - filling algorithms by maintaining only a subset of subcarriers for computation in each iteration , which reduces the complexity without any performance degradation . moreover , a modified algorithm with even lower complexity is developed , and equal power allocation is introduced as an initial allocation to accelerate its convergence . simulation results show that the modified algorithm achieves a considerable complexity reduction while causing only a minor drop in performance 文摘:基于迭代的比特和功率分配机制,提出了一种低复杂度的比特和功率分配算法.与传统的迭代分配算法不同,该算法在每次迭代中只需要比较几个特定的子载波.该方法在保持传统迭代算法性能的前提下极大地减小了迭代分配算法的复杂度.此外,通过选择等功率分配方案作为初始方案加快了算法的收敛速度,进一步降低了算法复杂度.仿真结果表明,提出的改进算法在基本不牺牲系统性能的前提下有效地降低了算法复杂度
Then , the theory of multiresolution and 2 - d tensor product multiresolution which are theoretical bases of discrete wavelet transformation are discussed and wavelet algorithms of analysis and reconstruction are strictly reasoned . the emphasis in this paper is exploration in realization of 2 - d dwt in image processing . through exploring the structure of nonseparable computation method applied to realize 2 - d dwt using orthonormal wavelet base with periodical extension of image data and biorthonormal wavelet base with symmetrical periodical extension of image data and analyzing characters of 2 - d wavelet filters which are produced by 1 - d wavelet filters , and combining a new computational method , modified algorithms are proposed 通过研究对图象数据采用周期边界延拓,利用正交小波基的二维离散周期小波变换和对图象数据采用对称周期延拓,利用双正交小波基的二维离散小波变换的非分离计算方法的计算结构,并对由一维正交小波滤波器和一维双正交小波滤波器以张量积方式构造的二维小波滤波器的特点进行了分析,结合一种新的计算方式,对算法进行了改进。