DistributedDataParallel:Expected tensor for argument 1 'input' to have the same device as tensor for

Record the bug s encountered in distributed training using pytorch's DistributedDataParallel for the first time: Expected tensor for argument #1 'input' to have the same device as tensor for argument #2 'weight Background: single machine multi card parallel training using linux server, pytorch version 1.7, python 3.0 7,cuda101 After consulti ...

Added by cretam on Fri, 18 Feb 2022 23:22:40 +0200

Image features - Part 2

Image features Similar to text features, image features are also a kind of data that is very difficult to mine by gradient lifting tree model. At present, image related problems, such as image classification and image segmentation, are almost neural network-based models. However, in some multimodal problems, such as commodity search recommen ...

Added by wenxi on Fri, 18 Feb 2022 20:37:57 +0200

pytorch model tensorrt accelerates - pth to onnx to trt, and tests the model speed in reasoning trt model

First, you need to install two necessary packages tensorrt and torch2trt. If tensorrt, you need to download the tar compressed package on the official website. It is recommended to download the tar package for installation, Official website , I downloaded version 7.2.3. torch2trt can clone projects on GitHub. My environment (tensorrt seems to w ...

Added by Sk8Er_GuY on Fri, 18 Feb 2022 18:51:22 +0200

Using out of pocket prediction (oof) to evaluate the generalization performance of the model and build an integrated model

Machine learning algorithms usually use cross validation techniques such as kFold to improve the accuracy of the model. In the process of cross validation, the prediction is carried out through the split test set that is not used for model training. These predictions are called out of fold predictions. External prediction plays an important rol ...

Added by gOloVasTicK on Fri, 18 Feb 2022 10:22:40 +0200

Tensorflow model saving, loading and fine tune

1, Save Tensorflow model: 1. Save file description Tensorflow model mainly includes the design (diagram) of the network and the values of trained parameters. Therefore, tensorflow model has two main files: 1) graph.pbtxt: This is actually a text file, which saves the structure information of the model 2) checkpoint file: in fact, it is a tx ...

Added by oeb on Fri, 18 Feb 2022 08:08:45 +0200

Classic network VGG16

Classic network VGG16 structure According to the size of convolution kernel and the number of convolution layers, VGG can be divided into six configurations: A, a-lrn, B, C, D and E. among them, D and E are commonly used, which are called VGG16 and VGG19 respectively. The following figure shows six structural configurations of VGG:   In ...

Added by arbitter on Fri, 18 Feb 2022 05:28:39 +0200

[YOLOv3] teach you how to build a car detector

This article will take you to build a car detector, using the algorithm of PyTorch version of YOLOV3. We will not explain the details of the algorithm, but focus on how to implement our own car detector, mainly including data download, data cleaning, data set production, training and detection (image detection, video detection). Even if you don ...

Added by stageguys on Fri, 18 Feb 2022 03:33:12 +0200

It took an hour to write an OCR tool for image and character recognition in Python

Life is short, learn Python! In the previous article, we tried to use Python to realize text OCR recognition many times! Today we are going to make an upgraded version: directly write an image character recognition OCR tool! introduction Recently, I talked about a demand for image and character recognition in the technical exchange group, w ...

Added by sharke on Thu, 17 Feb 2022 18:19:48 +0200

Detailed explanation and code implementation of soft voting and hard voting mechanism in integrated learning

Quickly review the soft voting and hard voting in the integration methodThe integration method is to combine the results of two or more separate machine learning algorithms and try to produce more accurate results than any single algorithm.In soft voting, the probability of each category is averaged to produce results. For example, if algorithm ...

Added by cavendano on Thu, 17 Feb 2022 04:26:42 +0200

Pytoch: fast migration of image style

Pytoch: fast migration of image style - residual network, fixed style and arbitrary content Copyright: Jingmin Wei, Pattern Recognition and Intelligent System, School of Artificial and Intelligence, Huazhong University of Science and Technology Pytoch tutorial column link This tutorial is not for commercial use. It is only for learning ...

Added by idire on Wed, 16 Feb 2022 20:03:05 +0200