README.md

VQA using Differential Attention Models

Pytorch implementation of the papers:

• VQA: Visual Question Answering (https://arxiv.org/pdf/1505.00468.pdf).
• Stacked Attention Networks for Image Question Answering (http://arxiv.org/abs/1511.02274)
• Differential Attention for Visual Question Answering (http://arxiv.org/abs/1804.00298)

Usage

1. Clone the repositories.

git clone https://github.com/chirag26495/DAN_VQA.git

2. Download and unzip the dataset from official url of VQA: https://visualqa.org/download.html.

cd basic_vqa/utils
chmod +x download_and_unzip_datasets.csh
./download_and_unzip_datasets.csh

3. Preproccess input data for (images, questions and answers).

$ python resize_images.py --input_dir='../datasets/Images' --output_dir='../datasets/Resized_Images'  
$ python make_vacabs_for_questions_answers.py --input_dir='../datasets'
$ python build_vqa_inputs.py --input_dir='../datasets' --output_dir='../datasets'

4. Train model for VQA task.

$ cd ..
$ python train.py

Pretrained Models and Exemplar Mappings (using VQA2.0 dataset)

• Download: https://iiitaphyd-my.sharepoint.com/:f:/g/personal/adhiraj_deshmukh_research_iiit_ac_in/EvyW0gTi2LRNiJkhjq481zMBk9aRolCkIE-invan8o17hQ?e=dNvGIg

Results

• Quantitative comparison on VQA2.0 Validation set

Model	Metric	Dataset	Accuracy
Basic (LQI)	All	VQA v2	47.61
Baseline (LQIA)	All	VQA v2	53.23
SAN-2	All	VQA v2	55.28
DAN + LQIA	All	VQA v2	55.49
DAN-alt. + LQIA	All	VQA v2	54.16