# License Notes

These notes are not legal advice. They summarize release-relevant provenance and licensing considerations for researchers using EventActivityNet v1.0.

## Source Data Obligations

EventActivityNet v1.0 is derived from ActivityNet / ActivityNet Captions videos and annotations. The original ActivityNet and ActivityNet Captions source terms, licenses, and citation obligations still apply.

The EventActivityNet release contains generated HDF5 event voxel representations and metadata derived from those source videos and annotations. It does not remove, replace, or supersede the usage requirements of the source datasets.

Users are responsible for complying with the original ActivityNet and ActivityNet Captions licenses when using or redistributing EventActivityNet.

EventActivityNet grants no additional usage rights beyond those provided by the original ActivityNet and ActivityNet Captions datasets.

## User Responsibilities

Users are responsible for:

- following ActivityNet and ActivityNet Captions usage terms;
- citing ActivityNet and ActivityNet Captions where required;
- using the dataset for research purposes consistent with source dataset terms;
- checking whether their intended use is permitted by the original source licenses and by any hosting-platform terms.

## Redistribution Notes

If redistributing EventActivityNet or derived files:

- preserve provenance that the dataset is derived from ActivityNet / ActivityNet Captions;
- include release documentation and license notes;
- do not imply that generated voxel files remove source dataset obligations;
- avoid exposing local build-machine paths in public manifests or documentation.

## Privacy and Safety

The source videos are public web videos included in ActivityNet. EventActivityNet v1.0 is intended for research use, not for identifying people, surveillance, biometric recognition, or consequential decision-making about individuals.

The final release audit found no remaining HDF5 integrity problems. Public documentation should continue to avoid local filesystem paths and unrelated private metadata.

## Annotation Attribution

ActivityNet Captions provides the timestamped natural-language descriptions. ActivityNet v1.3 provides the temporal action segments and labels. EventActivityNet provides derived event voxel tensors and the project-derived caption/action alignment metadata. These derived files do not grant additional rights beyond the original ActivityNet and ActivityNet Captions terms.