Uploaded February 2023 | Updated September 2026, 1 week ago
One of the defining features of CatBoost is its concerted effort to avoid data leakage at all costs. In this video, we'll see how it eliminates a potential threat in Target Encoding by ordering the data and encoding it sequentially. This ordered approach is central to everything CatBoost does and we'll see it again in Part 2 when we talk about how it builds trees.
NOTE: This StatQuest is based on the original CatBoost manuscript... arxiv.org/abs/1706.09516
...and an example provided in the CatBoost documentation...
catboost.ai/en/docs/concepts/algorithm-main-stages_cat-to-numberic
English
This video has been dubbed using an artificial voice via aloud.area120.google.com to increase accessibility. You can change the audio track language in the Settings menu.
Spanish
Este video ha sido doblado al español con voz artificial con aloud.area120.google.com para aumentar la accesibilidad. Puede cambiar el idioma de la pista de audio en el menú Configuración.
Portuguese
Este vídeo foi dublado para o português usando uma voz artificial via aloud.area120.google.com para melhorar sua acessibilidade. Você pode alterar o idioma do áudio no menu Configurações.
For a complete index of all the StatQuest videos, check out:
statquest.org/video-index
If you'd like to support StatQuest, please consider...
Patreon: patreon.com/statquest
...or...
YouTube Membership: youtube.com/channel/UCtYLUTtgS3k1Fg4y5tAhLbw/join
...buying one of my books, a study guide, a t-shirt or hoodie, or a song from the StatQuest store...
statquest.org/statquest-store
...or just donating to StatQuest!
paypal.me/statquest
Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter:
twitter.com/joshuastarmer
0:00 Awesome song and introduction
1:56 A slight problem with k-fold target encoding
3:42 Ordered Target Encoding
Corrections:
4:09 It is also worth noting that if there were more than 2 target values, for example, if Loves Troll 2 could be 0, 1 and 2, then, when calculating the OptionCount for a sample with Loves Troll 2 = 1, we would include rows that had Loves Troll 2 = 1 and 2.
#StatQuest #CatBoost #dubbedwithaloud
One of the defining features of CatBoost is its concerted effort to avoid data leakage at all costs. In this video, we'll see how it eliminates a potential threat in Target Encoding by ordering the data and encoding it sequentially. This ordered approach is central to everything CatBoost does and we'll see it again in Part 2 when we talk about how it builds trees.
NOTE: This StatQuest is based on the original CatBoost manuscript... arxiv.org/abs/1706.09516
...and an example provided in the CatBoost documentation...
catboost.ai/en/docs/concepts/algorithm-main-stages_cat-to-numberic
English
This video has been dubbed using an artificial voice via aloud.area120.google.com to increase accessibility. You can change the audio track language in the Settings menu.
Spanish
Este video ha sido doblado al español con voz artificial con aloud.area120.google.com para aumentar la accesibilidad. Puede cambiar el idioma de la pista de audio en el menú Configuración.
Portuguese
Este vídeo foi dublado para o português usando uma voz artificial via aloud.area120.google.com para melhorar sua acessibilidade. Você pode alterar o idioma do áudio no menu Configurações.
For a complete index of all the StatQuest videos, check out:
statquest.org/video-index
If you'd like to support StatQuest, please consider...
Patreon: patreon.com/statquest
...or...
YouTube Membership: youtube.com/channel/UCtYLUTtgS3k1Fg4y5tAhLbw/join
...buying one of my books, a study guide, a t-shirt or hoodie, or a song from the StatQuest store...
statquest.org/statquest-store
...or just donating to StatQuest!
paypal.me/statquest
Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter:
twitter.com/joshuastarmer
0:00 Awesome song and introduction
1:56 A slight problem with k-fold target encoding
3:42 Ordered Target Encoding
Corrections:
4:09 It is also worth noting that if there were more than 2 target values, for example, if Loves Troll 2 could be 0, 1 and 2, then, when calculating the OptionCount for a sample with Loves Troll 2 = 1, we would include rows that had Loves Troll 2 = 1 and 2.
#StatQuest #CatBoost #dubbedwithaloud
