Clotho v2 is published.

[Konstantinos Drossos]

Dear all, 

We are happy to announce that Clotho v2 is now published in Zenodo. You can find Clotho v2 in the same Zenodo entry for Clotho v1 (https://zenodo.org/record/4743815). 

Clotho v2 contains around 2000 more audio files (~40% increase compared to Clotho v1) introducing more training data and a new validation split. Evaluation and testing splits are not altered, i.e. evaluation and testing splits in v2 are kept the same as in v1. Each audio file is of 15-30 seconds long, having five captions of eight to 20 words. 

Changes in version 2: 

In version 2 of Clotho, there are audio files added in the development split and a new validation split is added. There are no changes in the evaluation split. 

Specifically: 

• Now there are 3840 audio files in the development split. In Clotho version 1, there were 2893 audio files. Now, 947 new audio files are added. 
• There are 1046 new audio files as the validation split. 
• There is no overlap of audio files between splits

All new captions are treated as in version 1 of Clotho, i.e. having word consistency, no named entities, no speech transcription, and no hapax legomena between splits (i.e. words appearing only in one of the splits). 

Best, 

# Kostas