---
license: mit
language:
- en
tags:
- behavior
- motion
- human
- egocentric
- language
- llm
- vlm
- esk
size_categories:
- 10K<n<100K
task_categories:
- question-answering
---

# EPFL Smart Kitchen: Lemonade benchmark

## Abstract
 we introduce Lemonade: **L**anguage models **E**valuation of **MO**tion a**N**d **A**ction-**D**riven **E**nquiries.
 Lemonade consists of 36,521 closed-ended QA pairs linked to egocentric video clips, categorized in three groups and six subcategories.
 18,857 QAs focus on behavior understanding, leveraging the rich ground truth behavior annotations of the EPFL-Smart Kitchen to interrogate models about perceived actions (Perception) and reason over unseen behaviors (Reasoning).
 8,210 QAs involve longer video clips, challenging models in summarization (Summarization) and session-level inference (Session properties).
 The remaining 9,463 QAs leverage the 3D pose estimation data to infer hand shapes, joint angles (Physical attributes), or trajectory velocities (Kinematics) from visual information.

## Content
The current repository contains all egocentric videos recorded in the EPFL-Smart-Kitchen-30 dataset. You can download the rest of the dataset at ... and ... .

### Repository structure

```
Lemonade
├── MCQs
    └── lemonade_benchmark.csv
├── videos
    ├── YH2002_2023_12_04_10_15_23_hololens.mp4
    └── ..
└── README.md
```

`lemonade_benchmark.csv` : Table with the following fields:
**Question**  : Question to be answered </br>
**QID** : Question identifier, an integer from 0 to 30 </br>
**Answers** : A list of possible answers to the question. This can be a multiple-choice set or open-ended responses. </br>
**Correct Answer** : The answer that is deemed correct from the list of provided answers. </br>
**Clip** : A reference to the video clip related to the question. </br>
**Start** : The timestamp (in frame) in the clip where the question context begins. </br>
**End** : The timestamp (in frame) in the clip where the question context ends. </br>
**Category** : The broad topic under which the question falls (Behavior understanding, Long-term understanding or Motion and Biomechanics) </br>
**Subcategory** : A more refined classification within the category (Perception, Reasoning, Summarization, Session properties, Physical attributes, Kinematics) </br>
**Difficulty** : The complexity level of the question (e.g., Easy, Medium, Hard)

`videos` : Folder with all egocentric videos from the EPFL-Smart-Kitchen-30 benchmark. Video names are structured as `[Participant_ID]_[Session_name]_hololens.mp4`.

> We refer the reader to the associated publication for details about data processing and tasks description.


## Usage
The evaluation of the benchmark can be done through the following github repository: ... . 

## Publications
cite arxiv paper

## Acknowledgments
We thank Andy Bonnetto for the design of the dataset and  Matea Tashkovska for the adaptation of the evaluation platform.