| # ❤️🩹 Sensai: Toxic Chat Dataset | |
| Sensai is a toxic chat dataset consists of live chats from Virtual YouTubers' live streams. | |
| Download the dataset from [Kaggle Datasets](https://www.kaggle.com/uetchy/sensai) and join `#livechat-dataset` channel on [holodata Discord](https://holodata.org/discord) for discussions. | |
| ## Provenance | |
| - **Source:** YouTube Live Chat events (all streams covered by [Holodex](https://holodex.net), including Hololive, Nijisanji, 774inc, etc) | |
| - **Temporal Coverage:** From 2021-01-15T05:15:33Z | |
| - **Update Frequency:** At least once per month | |
| ## Research Ideas | |
| - Toxic Chat Classification | |
| - Spam Detection | |
| - Sentence Transformer for Live Chats | |
| See [public notebooks](https://www.kaggle.com/uetchy/sensai/code) for ideas. | |
| ## Files | |
| | filename | summary | size | | |
| | ------------------------- | -------------------------------------------------------------- | -------- | | |
| | `chats_flagged_%Y-%m.csv` | Chats flagged as either deleted or banned by mods (3,100,000+) | ~ 400 MB | | |
| | `chats_nonflag_%Y-%m.csv` | Non-flagged chats (3,100,000+) | ~ 300 MB | | |
| To make it a balanced dataset, the number of `chats_nonflags` is adjusted (randomly sampled) to be the same as `chats_flagged`. | |
| Ban and deletion are equivalent to `markChatItemsByAuthorAsDeletedAction` and `markChatItemAsDeletedAction` respectively. | |
| ## Dataset Breakdown | |
| ### Chats (`chats_%Y-%m.csv`) | |
| | column | type | description | | |
| | --------------- | ------ | ---------------------------- | | |
| | body | string | chat message | | |
| | membership | string | membership status | | |
| | authorChannelId | string | anonymized author channel id | | |
| | channelId | string | source channel id | | |
| #### Membership status | |
| | value | duration | | |
| | ----------------- | ------------------------- | | |
| | unknown | Indistinguishable | | |
| | non-member | 0 | | |
| | less than 1 month | < 1 month | | |
| | 1 month | >= 1 month, < 2 months | | |
| | 2 months | >= 2 months, < 6 months | | |
| | 6 months | >= 6 months, < 12 months | | |
| | 1 year | >= 12 months, < 24 months | | |
| | 2 years | >= 24 months | | |
| #### Pandas usage | |
| Set `keep_default_na` to `False` and `na_values` to `''` in `read_csv`. Otherwise, chat message like `NA` would incorrectly be treated as NaN value. | |
| ```python | |
| import pandas as pd | |
| from glob import iglob | |
| flagged = pd.concat([ | |
| pd.read_csv(f, | |
| na_values='', | |
| keep_default_na=False) | |
| for f in iglob('../input/sensai/chats_flagged_*.csv') | |
| ], | |
| ignore_index=True) | |
| ``` | |
| ## Consideration | |
| ### Anonymization | |
| `authorChannelId` are anonymized by SHA-1 hashing algorithm with a pinch of undisclosed salt. | |
| ### Handling Custom Emojis | |
| All custom emojis are replaced with a Unicode replacement character `U+FFFD`. | |
| ## Citation | |
| ```latex | |
| @misc{sensai-dataset, | |
| author={Yasuaki Uechi}, | |
| title={Sensai: Toxic Chat Dataset}, | |
| year={2021}, | |
| month={8}, | |
| version={31}, | |
| url={https://github.com/holodata/sensai-dataset} | |
| } | |
| ``` | |
| ## License | |
| - Code: [MIT License](https://github.com/holodata/sensai-dataset/blob/master/LICENSE) | |
| - Dataset: [ODC Public Domain Dedication and Licence (PDDL)](https://opendatacommons.org/licenses/pddl/1-0/index.html) | |