毕设&课程作业_基于深度学习的故障检测算法.zip

#!/usr/bin/python # -*- coding:utf-8 -*- import logging import os import time import warnings import torch from torch import nn from torch import optim import models import AE_Datasets import torch.nn.functional as F from torch.utils.tensorboard import SummaryWriter def SAEloss(recon_x, x, z): """ recon_x: generating images x: origin images mu: latent mean logvar: latent log variance """ reconstruction_function = nn.MSELoss() # mse loss BCE = reconstruction_function(recon_x, x) pmean = 0.5 p = F.sigmoid(z) p = torch.mean(p, 1) KLD = pmean * torch.log(pmean / p) + (1 - pmean) * torch.log((1 - pmean) / (1 - p)) KLD = torch.sum(KLD, 0) return BCE + KLD class train_utils(object): def __init__(self, args, save_dir): self.args = args self.save_dir = save_dir def setup(self): """ Initialize the datasets, model, loss and optimizer :param args: :return: """ args = self.args # Consider the gpu or cpu condition if torch.cuda.is_available(): self.device = torch.device("cuda") self.device_count = torch.cuda.device_count() logging.info('using {} gpus'.format(self.device_count)) assert args.batch_size % self.device_count == 0, "batch size should be divided by device count" else: warnings.warn("gpu is not available") self.device = torch.device("cpu") self.device_count = 1 logging.info('using {} cpu'.format(self.device_count)) # Load the datasets if args.processing_type == 'O_A': from AE_Datasets.O_A import datasets Dataset = getattr(datasets, args.data_name) elif args.processing_type == 'R_A': from AE_Datasets.R_A import datasets Dataset = getattr(datasets, args.data_name) elif args.processing_type == 'R_NA': from AE_Datasets.R_NA import datasets Dataset = getattr(datasets, args.data_name) else: raise Exception("processing type not implement") self.datasets = {} self.datasets['train'], self.datasets['val'] = Dataset(args.data_dir, args.normlizetype).data_preprare() self.dataloaders = {x: torch.utils.data.DataLoader(self.datasets[x], batch_size=args.batch_size, shuffle=(True if x == 'train' else False), num_workers=args.num_workers, pin_memory=(True if self.device == 'cuda' else False)) for x in ['train', 'val']} # Define the model fmodel=getattr(models, args.model_name) self.encoder = getattr(fmodel, 'encoder')(in_channel=Dataset.inputchannel, out_channel=Dataset.num_classes) self.decoder = getattr(fmodel, 'decoder')(in_channel=Dataset.inputchannel, out_channel=Dataset.num_classes) self.classifier = getattr(fmodel, 'classifier')(in_channel=Dataset.inputchannel, out_channel=Dataset.num_classes) # Define the optimizer if args.opt == 'sgd': self.optimizer = optim.SGD([{'params': self.encoder.parameters()}, {'params': self.decoder.parameters()}], lr=args.lr, momentum=args.momentum, weight_decay=args.weight_decay) elif args.opt == 'adam': self.optimizer = optim.Adam([{'params': self.encoder.parameters()}, {'params': self.decoder.parameters()}], lr=args.lr, weight_decay=args.weight_decay) else: raise Exception("optimizer not implement") # Define the learning rate decay if args.lr_scheduler == 'step': steps = [int(step) for step in args.steps.split(',')] self.lr_scheduler = optim.lr_scheduler.MultiStepLR(self.optimizer, steps, gamma=args.gamma) elif args.lr_scheduler == 'exp': self.lr_scheduler = optim.lr_scheduler.ExponentialLR(self.optimizer, args.gamma) elif args.lr_scheduler == 'stepLR': steps = int(args.steps) self.lr_scheduler = optim.lr_scheduler.StepLR(self.optimizer, steps, args.gamma) elif args.lr_scheduler == 'fix': self.lr_scheduler = None else: raise Exception("lr schedule not implement") # Define the optimizer if args.opt == 'sgd': self.optimizer1 = optim.SGD([{'params': self.encoder.parameters()}, {'params': self.classifier.parameters()}], lr=args.lr, momentum=args.momentum, weight_decay=args.weight_decay) elif args.opt == 'adam': self.optimizer1 = optim.Adam([{'params': self.encoder.parameters()}, {'params': self.classifier.parameters()}], lr=args.lr, weight_decay=args.weight_decay) else: raise Exception("optimizer not implement") # Define the learning rate decay if args.lr_scheduler == 'step': steps1 = [int(step) for step in args.steps1.split(',')] self.lr_scheduler1 = optim.lr_scheduler.MultiStepLR(self.optimizer1, steps1, gamma=args.gamma) elif args.lr_scheduler == 'exp': self.lr_scheduler1 = optim.lr_scheduler.ExponentialLR(self.optimizer1, args.gamma) elif args.lr_scheduler == 'stepLR': steps1 = int(args.steps1) self.lr_scheduler1 = optim.lr_scheduler.StepLR(self.optimizer1, steps1, args.gamma) elif args.lr_scheduler == 'fix': self.lr_scheduler1 = None else: raise Exception("lr schedule not implement") self.start_epoch = 0 # Invert the model and define the loss self.encoder.to(self.device) self.decoder.to(self.device) self.classifier.to(self.device) self.criterion = nn.CrossEntropyLoss() self.criterion1 = nn.MSELoss() def train(self, writer): """ Training process :return: """ args = self.args step = 0 best_acc = 0.0 batch_count = 0 batch_loss = 0.0 batch_acc = 0 step_start = time.time() traing_acc = [] testing_acc = [] traing_loss = [] testing_loss = [] print("Training Autoencoder with minimum loss") for epoch in range(args.middle_epoch): logging.info('-'*5 + 'Epoch {}/{}'.format(epoch, args.middle_epoch - 1) + '-'*5) # Update the learning rate if self.lr_scheduler is not None: # self.lr_scheduler.step(epoch) logging.info('current lr: {}'.format(self.lr_scheduler.get_lr())) else: logging.info('current lr: {}'.format(args.lr)) # Each epoch has a training and val phase for phase in ['train', 'val']: # Define the temp variable epoch_start = time.time() epoch_loss = 0.0 # Set model to train mode or test mode if phase == 'train': self.encoder.train() self.decoder.train() else: self.encoder.eval() self.decoder.eval() for batch_idx, (inputs, labels) in enumerate(self.dataloaders[phase]): inputs = inputs.to(self.device) # Do the learning process, in val, we do not care about the gradient for relaxing with torch.set_grad_enabled(phase == 'train'): #forward if args.model_name in ["Vae1d", "Vae2d"]: