05_fft

A commented bash script to generate our final 2nd place solution can be found in make_kaggle_solution.sh. Running all the commands sequentially will probably take 7 - 10 days on recent consumer grade hardware. If you have multiple GPUs you can speed things up by doing training and feature extraction for the two networks in parallel. However, due to the computationally heavy data augmentation it may be far less than twice as fast especially when working with 512x512 pixel input images. You can also obtain a quadratic weighted kappa score of 0.839 on the private leaderboard by just training the 4x4 kernel networks and by performing only 20 feature extraction iterations with the weights that gave you the best MSE validation scores during training. The entire ensemble only achieves a slightly higher score of 0.845.

牛顿－拉夫逊法潮流计算 基本步骤： 　　（1）形成节点导纳矩阵 　　（2）将各节点电压设初值U， 　　（3）将节点初值代入相关求式，求出修正方程式的常数项向量 　　（4）将节点电压初值代入求式，求出雅可比矩阵元素 　　（5）求解修正方程，求修正向量 　　（6）求取节点电压的新值 　　（7）检查是否收敛，如不收敛，则以各节点电压的新值作为初值自第3步重新开始进行狭义次迭代，否则转入下一步 　　（8）计算支路功率分布，PV节点无功功率和平衡节点柱入功率。(Newton-Raphson method flow calculation basic steps : (1) formation of nodal admittance matrix (2) to set up the initial node voltage U, (3) the initial node-generation-related demand. calculated that the constant term formula Vector (4) nodes will be incorporated into the initial voltage-seeking, calculated Jacobian matrix elements (5) solving that equation, seek to amend the vector (6) to strike a new node voltage value (7) to check whether convergence, if not restrained. concentrated in the nodes of the new voltage as the initial value since the first three steps to re-start the narrow iterations. Otherwise, turn into the next (8) Calculation branch power distribution, PV nodes reactive power and balance-node into power.)

说明：  bekken BK3254 Designkit

多核学习+SMO算法的代码实现，包括java版本、python版本和C++版本(Multiple Kernel Learning and the SMO Algorithm)

说明：  基于高阶累积量来实现调制信号识别，包含了matlab中用于高阶累积量的工具包(Modulation signal recognition based on higher-order cumulant)

用于个人网站建设的液鲸时钟代码.用HTML语言编的 -for personal websites on the whales clock source. Using HTML language series

示波器的功能演示和测试，用于高校学习和嵌入式开发初学者(oscillograph; oscilloscope (OSC); oscillometer; ondoscope demo; demonstrate; show-how; reproduction test; testing; measurement; checkout colleges and universities study; learn; emulate; learning flushbonading beginner; tyro; learner in the first stage; abecedarian; catechumen)

说明：  模拟舰船Kelvin尾迹，不考虑船首尾及粘滞影响(The simulation of ship wake Kelvin, without considering the fore and aft and viscous effect)

通过模型预测控制（MPC）对单相逆变器进行电流跟踪控制(Current tracking control of single-phase inverters by model predictive control (MPC))

这是我第一次画的DXP图，我不大知道到底这张图到底是干嘛的-This is my first painting DXP map, in the end I do not know what this plan is in the end of the