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---
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license: apache-2.0
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---
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---
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license: apache-2.0
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language:
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- ko
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library_name: transformers
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pipeline_tag: automatic-speech-recognition
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tags:
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- speech
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- audio
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---
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# hubert-base-korean
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## Model Details
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Hubert(Hidden-Unit BERT)๋ Facebook์์ ์ ์ํ Speech Representation Learning ๋ชจ๋ธ์
๋๋ค.
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Hubert๋ ๊ธฐ์กด์ ์์ฑ ์ธ์ ๋ชจ๋ธ๊ณผ ๋ฌ๋ฆฌ, ์์ฑ ์ ํธ๋ฅผ raw waveform์์ ๋ฐ๋ก ํ์ตํ๋ self-supervised learning ๋ฐฉ์์ ์ฌ์ฉํฉ๋๋ค.
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์ด ์ฐ๊ตฌ๋ ๊ตฌ๊ธ์ TPU Research Cloud(TRC)๋ฅผ ํตํด ์ง์๋ฐ์ Cloud TPU๋ก ํ์ต๋์์ต๋๋ค.
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### Model Description
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<table>
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<tr>
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<td colspan="2"></td>
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<td>Base</td>
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<td>Large</td>
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</tr>
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<tr>
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<td rowspan="3">CNN Encoder</td>
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<td>strides</td>
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<td colspan="2">5, 2, 2, 2, 2, 2, 2</td>
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</tr>
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<tr>
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<td>kernel width</td>
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<td colspan="2">10, 3, 3, 3, 3, 2, 2</td>
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</tr>
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<tr>
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<td>channel</td>
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<td colspan="2">512</td>
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</tr>
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<tr>
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<td rowspan="4">Transformer Encoder</td>
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<td>Layer</td>
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<td>12</td>
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<td>24</td>
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</tr>
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<tr>
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<td>embedding dim</td>
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<td>768</td>
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<td>1024</td>
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</tr>
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<tr>
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<td>inner FFN dim</td>
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<td>3072</td>
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<td>4096</td>
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</tr>
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<tr>
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<td>attention heads</td>
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<td>8</td>
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<td>16</td>
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</tr>
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<tr>
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<td>Projection</td>
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<td>dim</td>
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<td>256</td>
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<td>768</td>
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</tr>
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<tr>
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<td colspan="2">Params</td>
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<td>95M</td>
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<td>317M </td>
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</tr>
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</table>
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## How to Get Started with the Model
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### Pytorch
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```py
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import torch
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from transformers import HubertModel
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model = HubertModel.from_pretrained("team-lucid/hubert-base-korean")
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wav = torch.ones(1, 16000)
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outputs = model(wav)
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print(f"Input: {wav.shape}") # [1, 16000]
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print(f"Output: {outputs.last_hidden_state.shape}") # [1, 49, 768]
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```
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### JAX/Flax
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```py
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import jax.numpy as jnp
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from transformers import FlaxAutoModel
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model = FlaxAutoModel.from_pretrained("team-lucid/hubert-base-korean", trust_remote_code=True)
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wav = jnp.ones((1, 16000))
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outputs = model(wav)
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print(f"Input: {wav.shape}") # [1, 16000]
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print(f"Output: {outputs.last_hidden_state.shape}") # [1, 49, 768]
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```
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## Training Details
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### Training Data
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ํด๋น ๋ชจ๋ธ์ ๊ณผํ๊ธฐ์ ์ ๋ณดํต์ ๋ถ์ ์ฌ์์ผ๋ก ํ๊ตญ์ง๋ฅ์ ๋ณด์ฌํ์งํฅ์์ ์ง์์ ๋ฐ์
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๊ตฌ์ถ๋ [์์ ๋ํ ์์ฑ(์ผ๋ฐ๋จ์ฌ)](https://www.aihub.or.kr/aihubdata/data/view.do?dataSetSn=109), [๋คํ์ ์์ฑํฉ์ฑ ๋ฐ์ดํฐ](https://www.aihub.or.kr/aihubdata/data/view.do?dataSetSn=542), [๋ฐฉ์ก ์ฝํ
์ธ ๋ํ์ฒด ์์ฑ์ธ์ ๋ฐ์ดํฐ](https://www.aihub.or.kr/aihubdata/data/view.do?dataSetSn=463)
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์์ ์ฝ 4,000์๊ฐ์ ์ถ์ถํด ํ์ต๋์์ต๋๋ค.
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### Training Procedure
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[์ ๋
ผ๋ฌธ](https://arxiv.org/pdf/2106.07447.pdf)๊ณผ ๋์ผํ๊ฒ MFCC ๊ธฐ๋ฐ์ผ๋ก Base ๋ชจ๋ธ์ ํ์ตํ ๋ค์, 500 cluster๋ก k-means๋ฅผ ์ํํด ๋ค์ Base์
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Large ๋ชจ๋ธ์ ํ์ตํ์ต๋๋ค.
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#### Training Hyperparameters
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| Hyperparameter | Base | Large |
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|:--------------------|---------|--------:|
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| Warmup Steps | 32,000 | 32,000 |
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| Learning Rates | 5e-4 | 1.5e-3 |
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| Batch Size | 128 | 128 |
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| Weight Decay | 0.01 | 0.01 |
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| Max Steps | 400,000 | 400,000 |
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| Learning Rate Decay | 0.1 | 0.1 |
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| \\(Adam\beta_1\\) | 0.9 | 0.9 |
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| \\(Adam\beta_2\\) | 0.99 | 0.99 |
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