机器学习简介 Different types of Functions Regression : The function outputs a scalar(标量）. predict the PM2.5 Classification ： Given options (classes), the function outputs the correct one. Spam filtering Structured Learning ： create something with structure(image, document) Example : YouTube Channel 1.Function with Unknown Parameters. $$ y=b+wx_1 $$ 2.Define Loss from Training Data Loss is a...
PyTorch PyTorch Tutorial Python3中机器学习框架 dataset = MyDataset(file) dataloader = DataLoader(dataset, batch_size = size , shuffle = True) Training : True Testing : False from torch.utils.data import Dataset, DateLoader class MyDataset(Dataset): def __init__(self, file): # read data & preprocess self.data = ... def __getitem__(self,index): #return one sample at a time return self.data[index] def __len__(self): #return the size of...
Officially begin Deep = Many hidden layers Neurall Network Find a function in function set. Goodness of function Pick the best function Backpropagation - Backward Pass(反向传播) 反向的neural network Regression Stock Market Forecast Self-driving Car Recommendation Step 1 : Model A set of function Step 2 : Goodness of Function $$ \ha...
Convolutional network (CNN) Network的架构调整 1、All the images to be classified have the same size. Receptive filed Simplification 1 - Typical Setting all channels : 会看所有的channels kernel size : 长和宽 （e.g., 3*3) Stride : 移动的...
Spatial Transformer（STN） 处理旋转和放大图形的CNN分类 interpolation 插值法 Self-attention Sequence Labeling consider the context -> 参数很大并且容易Over fitting Self-attention...