![Samples from the COCO Caption dataset (Image credit: "https://arxiv.org/pdf/1504.00325.pdf").](imgs/coco_caption.png)(Samples from the COCO Caption dataset. Image credit: "https://arxiv.org/pdf/1504.00325.pdf")

# Microsoft COCO Dataset (Retrieval)

## Description
[Microsoft COCO dataset](https://github.com/tylin/coco-caption) contains over one and a half million captions describing over 330,000 images. For the training and validation images, five independent human generated captions are be provided for each image.

## Task
Cross modal retrieval: (1) **image-text**: given an image as query, retrieve texts from a gallery; (2) **text-image**: given a text as query, retrieval images from a gallery.


## Metrics
Common metrics are recall@k, denotes the [recall score](https://en.wikipedia.org/wiki/Precision_and_recall) after k retrieval efforts.

We use TR to denote the image-text retrieval recall score and IR to denote text-image retrieval score.

## Leaderboard
(Ranked by TR@1.)
| Rank | Model  | TR@1  | TR@5  | TR@10 | IR@1  | IR@5  | IR@10 |                                                                                                                   Resources                                                                                                                    |
| ---- | :----: | :---: | :---: | :---: | :---: | :---: | :---: | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: |
| 1    |  BLIP  | 82.4  | 95.4  | 97.9  | 65.1  | 86.3  | 91.8  | [paper](https://arxiv.org/pdf/2201.12086.pdf), [code](https://github.com/salesforce/BLIP), [demo](https://huggingface.co/spaces/Salesforce/BLIP), [blog](https://blog.salesforceairesearch.com/blip-bootstrapping-language-image-pretraining/) |
| 2    | X-VLM  | 81.2  | 95.6  | 98.2  | 63.4  | 85.8  | 91.5  |                                                                          [paper](https://arxiv.org/pdf/2111.08276v3.pdf), [code](https://github.com/zengyan-97/X-VLM)                                                                          |
| 3    | ALBEF  | 77.6  | 94.3  | 97.2  | 60.7  | 84.3  | 90.5  |                                            [paper](https://arxiv.org/abs/2107.07651), [code](https://github.com/salesforce/ALBEF), [blog](https://blog.salesforceairesearch.com/align-before-fuse/)                                            |
| 3    | ALIGN  | 77.0  | 93.5  | 96.9  | 59.9  | 83.3  | 89.8  |                                                                                                   [paper](https://arxiv.org/abs/2102.05918)                                                                                                    |
| 4    | VinVL  | 75.4  | 92.9  | 96.2  | 58.8  | 83.5  | 90.3  |                                                                          [paper](https://arxiv.org/pdf/2101.00529v2.pdf), [code](https://github.com/microsoft/Oscar)                                                                           |
| 5    | OSCAR  | 73.5  | 92.2  | 96.0  | 57.5  | 82.8  | 89.8  |                                                                          [paper](https://arxiv.org/pdf/2004.06165v5.pdf), [code](https://github.com/microsoft/Oscar)                                                                           |
| 6    | UNITER | 65.7  | 88.6  | 93.8  | 52.9  | 79.9  | 88.0  |                                                          [paper](https://www.ecva.net/papers/eccv_2020/papers_ECCV/papers/123750103.pdf), [code](https://github.com/ChenRocks/UNITER)                                                          |

## Auto-Downloading

```
cd lavis/datasets/download_scripts && python download_coco.py
```

## References
"Microsoft COCO Captions: Data Collection and Evaluation Server", Xinlei Chen, Hao Fang, Tsung-Yi Lin, Ramakrishna Vedantam, Saurabh Gupta, Piotr Dollar, C. Lawrence Zitnick