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Model: erwanf/gpt2-mini Source: Original Platform
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README.md
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README.md
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---
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license: mit
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datasets:
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- Skylion007/openwebtext
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language:
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- en
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metrics:
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- perplexity
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pipeline_tag: text-generation
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---
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# GPT-2 Mini
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A smaller GPT-2 model with (only) 39M parameters. It was pretrained on a subset of OpenWebText, the open-source version of the pretraining dataset used by OpenAI for the original GPT-2 models.
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## Uses
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The purpose of this model is mainly for research and education. Its small size allows for fast experiments in resource-limited settings, while still being able of generating complex and coherent text.
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## Getting Started
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Use the code below to get started with the model:
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```py
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from transformers import AutoModelForCausalLM, AutoTokenizer
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# Load model
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model = AutoModelForCausalLM.from_pretrained("erwanf/gpt2-mini")
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model.eval()
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# Load tokenizer
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tokenizer = AutoTokenizer.from_pretrained("erwanf/gpt2-mini")
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# Generate text
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prompt = "Hello, I'm a language model,"
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input_ids = tokenizer.encode(prompt, return_tensors="pt")
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output = model.generate(input_ids, do_sample=True, max_length=50, num_return_sequences=5)
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output_text = tokenizer.batch_decode(output, skip_special_tokens=True)
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print(output_text)
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```
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Output:
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```
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["Hello, I'm a language model, I can't be more efficient in words.\n\nYou can use this as a point to find out the next bit in your system, and learn more about me.\n\nI think a lot of the",
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"Hello, I'm a language model, my teacher is a good teacher - a good school teacher – and one thing you have to remember:\n\nIt's not perfect. A school is not perfect; it isn't perfect at all!\n\n",
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'Hello, I\'m a language model, but if I can do something for you then go for it (for a word). Here is my blog, the language:\n\nI\'ve not used "normal" in English words, but I\'ve always',
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'Hello, I\'m a language model, I\'m talking to you the very first time I used a dictionary and it can be much better than one word in my dictionary. What would an "abnormal" English dictionary have to do with a dictionary and',
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'Hello, I\'m a language model, the most powerful representation of words and phrases in the language I\'m using."\n\nThe new rules change that makes it much harder for people to understand a language that does not have a native grammar (even with']
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```
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## Training Details
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The architecture relies on the GPT-2 model, with smaller dimensions and less layers. It uses the same tokenizer as GPT-2. We used the first 2M rows from the OpenWebText dataset, out of which we use 1k for test and validation sets.
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### Hyperparameters
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| **Hyperparameter** | **Value** |
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|------------------------|------------------|
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| **Model Parameters** | |
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| Vocabulary Size | 50,257 |
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| Context Length | 512 |
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| Number of Layers | 4 |
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| Hidden Size | 512 |
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| Number of Attention Heads | 8 |
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| Intermediate Size | 2048 |
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| Activation Function | GELU |
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| Dropout | No |
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| **Training Parameters**| |
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| Learning Rate | 5e-4 |
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| Batch Size | 256 |
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| Optimizer | AdamW |
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| beta1 | 0.9 |
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| beta2 | 0.98 |
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| Weight Decay | 0.1 |
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| Training Steps | 100,000 |
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| Warmup Steps | 4,000 |
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| Learning Rate Scheduler| Cosine |
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| Training Dataset Size | 1M samples |
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| Validation Dataset Size| 1k samples |
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| Float Type | bf16 |
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