Unofficial PyTorch implementation of MobileViT based on paper "MobileViT: Light-weight, General-purpose, and Mobile-friendly Vision Transformer".

Last update: Dec 02, 2022

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Overview

MobileViT

RegNet

Unofficial PyTorch implementation of MobileViT based on paper MOBILEVIT: LIGHT-WEIGHT, GENERAL-PURPOSE, AND MOBILE-FRIENDLY VISION TRANSFORMER.

Model Architecture
Usage
Citation

Model Architecture

MobileViT Architecture

Usage

Training

python main.py

optional arguments:
  -h, --help            show this help message and exit
  --gpu_device GPU_DEVICE
                        Select specific GPU to run the model
  --batch-size N        Input batch size for training (default: 64)
  --epochs N            Number of epochs to train (default: 20)
  --num-class N         Number of classes to classify (default: 10)
  --lr LR               Learning rate (default: 0.01)
  --weight-decay WD     Weight decay (default: 1e-5)
  --model-path PATH     Path to save the model

Citation

@InProceedings{Sachin2021,
  title = {MOBILEVIT: LIGHT-WEIGHT, GENERAL-PURPOSE, AND MOBILE-FRIENDLY VISION TRANSFORMER},
  author = {Sachin Mehta and Mohammad Rastegari},
  booktitle = {},
  year = {2021}
}

If this implement have any problem please let me know, thank you.

Comments

Training settings

I really appreciate your efforts in implementing this model in pytorch. Here, I have one concern about the training settings. If what I understand is correct, you just trained the model for less than 5 epoches.

In addition, the hyper-parameters you adopted is different from that in the original article. For instance, in the original manuscript, authors train mobilevit using AdamW optimizer, label smoothing cross-entry and multi-scale sampler. The training phase has a warmup stage.

I also found that the classificaion accuracy provided here is much lower than that in the original version.

I conjecture that the gab between accuracies are caused by different training settings.

opened by hkzhang91 6

load pretrain weight failed

import torch
import models

model = models.MobileViT_S()
PATH = "./MobileVit-S.pth.tar"
weights = torch.load(PATH, map_location=lambda storage, loc: storage)
model.load_state_dict(weights['state_dict'])
model.eval()
torch.save(model, './model.pt')

I try to load the pre-train weight to test one demo; but the network structure does not seem to match the weights, is there any solution?

opened by hererookie 2

model training hyperparameter

A problem has been bothering me. the learning rate, optimizer, batch_size, L2 regularization, label smoothing and epochs are inconsistent with the paper. How should I modify the code?

opened by Agino-ltp 1
Have you test MobileVit on cifar-10?

Thanks for your wonderful work！

I prepare to try MobileVit on small dataset, such as MNIST, and I need adjust the network structure. Before this work, I want to know if MobileVit has a better performance than other networks on small dataset.

I notice "get_cifar10_dataset" in utils.py. Have you tested MobileVit on cifar-10? If you have, could you please show me the accuracy and inference time result?

opened by Jerryme-xxm 1

Issues when loading MobileViT_S()

I wanted to load the MobileViT_S() model and use the pre-trained weights, but I have got some errors in my code. To make it easier and help others, I will share my solution (in case there will be someone who is beginner like me):

def load_mobilevit_weights(model_path):
  # Create an instance of the MobileViT model
  net = MobileViT_S()
  
  # Load the PyTorch state_dict
  state_dict = torch.load(model_path, map_location=torch.device('cpu'))['state_dict']
  
  # Since there is a problem in the names of layers, we will change the keys to meet the MobileViT model architecture
  for key in list(state_dict.keys()):
    state_dict[key.replace('module.', '')] = state_dict.pop(key)
  
  # Once the keys are fixed, we can modify the parameters of MobileViT
  net.load_state_dict(state_dict)
  
  return net

net = load_mobilevit_weights("MobileViT_S_model_best.pth.tar")

opened by Sehaba95 4

Releases(weight)

weight(Oct 18, 2021)

https://drive.google.com/file/d/1ZQt1vACHTN98QJYaT2JW3kPF-wziHyPX/view?usp=sharing
Source code(tar.gz)
Source code(zip)
best_coco.pt(20.07 MB)

Owner

Hong-Jia Chen

Master student at National Chung Cheng University, Taiwan. Interested in Deep Learning and Computer Vision.

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