Huffman编码步骤：
1、将信源消息符号按其出现的概率大小依次排列
p(x1)≥p(x2)≥…≥ p(xn)
2、取两个概率最小的字母分别配以0和1两码元，并将这两个概率相加作为一个新字母的概率，与未分配的二进符号的字母重新排队。
3、对重排后的两个概率最小符号重复步骤2的过程。
4、不断继续上述过程，直到最后两个符号配以0和1为止。
5、从最后一级开始，向前返回得到各个信源符号所对应的码元序列，即相应的码字。
Huffman coding steps:
1. The source message symbols are arranged according to the probability of their occurrence
p(x1)>p(x2)>p(xn)
2. The two letters with the lowest probability are assigned with 0 and 1 symbols respectively, and the two probabilities are added as the probability of a new letter, and the letter of the unallocated binary symbol is re queued.
3. Repeat the procedure of step 2 for the two minimum probability symbols after rearrangement.
4. Continue until the last two symbols are matched with 0 and 1.
5. Starting from the last stage, the code sequence corresponding to each source symbol, namely the corresponding code word, is obtained. (2020-09-06, C/C++, 2KB, 下载0次)
PSO的改进版本->CSO，用临近点相比较实现进化，不适用局部最优点，避免了PSO的过早熟问题。
The evolutionary version of PSO->CSO replaces the local optimum with adjacent optimality, avoiding PSO premature. (2019-03-07, C/C++, 3623KB, 下载2次)
利用加速度信号测量位移是油田抽油井光杆位移测量的主要方法 而加速度信号的随机噪声和趋势项是影响
测量精度的主要因素 本文提出了一种基于学习的实时消噪和剔除趋势项方法 学习时先获取一段时间的加速度信
号 再通过时间序列分析技术得出 ARIMA 模型及其参数 最后基于 FFT 变换的 Rife-Jane 频率估计方法求出加速度
信号的周期 在线实时消噪和剔除趋势项方法是基于学习阶段所得模型参数 运用卡尔曼滤波技术消除加速度信号
随机噪声 按周期两次积分得到光杆位移 用加窗递推最小二乘法在线消除趋势项 通过抽油机半实物仿真平台测试
和分析加速度信号 结果表明 该方法有效地去除了加速度信号中的噪声和趋势项 极大地提高了位移的测量精度
Acceleration signal based approach is a main approach used to measure the displacement of polish rod in the
oilfield pumping wells. In this study a learning based real time noise immunization and trend term elimination approach is
proposed. During the learning acceleration signal within a period of time are firstly acquired then corresponding ARIMA
model and its parameters are derived finally the period of the acceleration signal is computed by using FFT transformation
and Rife Jane frequency estimation. The proposed approach bases the model obtained parameters uses Kalman filtering
techniques to remove random noise computes the polish rod displacement by a quadratic integration of the period and
eliminates the trend term by windowed recursive least squares method. Eventually an experiment over a pumping unit
hardware in the loop plant is carried out which indicates that the proposed approach can effectively eliminate noise and trend
term and obviously improve the measuring pre (2014-12-14, C/C++, 1410KB, 下载25次)
对企业全面预算管理实施效果的经济评价_基于湘钢集团的研究On enterprise comprehensive budget management based on the economic evaluation of the implementation _ Xianggang groups research
On enterprise comprehensive budget management based on the economic evaluation of the implementation _ Xianggang groups research (2012-04-10, C/C++, 129KB, 下载3次)
电能质量混杂补偿控制及其在企业配网的应用Electric energy quality hybrid compensation control in enterprise distribution network and its application
Electric energy quality hybrid compensation control in enterprise distribution network and its application (2012-02-22, C/C++, 1897KB, 下载2次)
动态任务分配虚拟企业生产调度研究.Dynamic task allocation of virtual enterprise production scheduling research.
Dynamic task allocation of virtual enterprise production scheduling research. (2012-01-16, C/C++, 291KB, 下载11次)
对于搞ACM/ICPC有很大帮助,里面涉及博弈论，图论，矩阵，计算几何，状态压缩等算法思想的描述。
To engage in ACM/ICPC great help, which involves game theory, graph theory, matrices, computational geometry, state compression algorithm described ideas. (2010-04-26, C/C++, 8255KB, 下载51次)