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German GPT2-XL (1.5B)

  • trained with BigScience's DeepSpeed-Megatron-LM code base
  • word embedding initialized with WECHSEL and all other weights taken from English gpt2-xl
  • ~ 3 days on 16xA100 GPUs (~ 80 TFLOPs / GPU)
  • stopped after 100k steps
  • 26.2B tokens
  • less than a single epoch on oscar_unshuffled_deduplicated_de (excluding validation set; original model was trained for 75 epochs on less data)
  • bf16
  • zero stage 0
  • tp/pp = 1

How to use

You can use this model directly with a pipeline for text generation. Since the generation relies on some randomness, we set a seed for reproducibility:

>>> from transformers import pipeline, set_seed
>>> generator = pipeline('text-generation', model='malteos/gpt2-xl-wechsel-german')
>>> set_seed(42)
>>> generator("Hello, I'm a language model,", max_length=30, num_return_sequences=5)

[{'generated_text': "Hello, I'm a language model, a language for thinking, a language for expressing thoughts."},
 {'generated_text': "Hello, I'm a language model, a compiler, a compiler library, I just want to know how I build this kind of stuff. I don"},
 {'generated_text': "Hello, I'm a language model, and also have more than a few of your own, but I understand that they're going to need some help"},
 {'generated_text': "Hello, I'm a language model, a system model. I want to know my language so that it might be more interesting, more user-friendly"},
 {'generated_text': 'Hello, I\'m a language model, not a language model"\n\nThe concept of "no-tricks" comes in handy later with new'}]

Here is how to use this model to get the features of a given text in PyTorch:

from transformers import GPT2Tokenizer, GPT2Model
tokenizer = GPT2Tokenizer.from_pretrained('malteos/gpt2-xl-wechsel-german')
model = GPT2Model.from_pretrained('malteos/gpt2-xl-wechsel-german')
text = "Replace me by any text you'd like."
encoded_input = tokenizer(text, return_tensors='pt')
output = model(**encoded_input)

Evaluation

Model (size) PPL
gpt2-xl-wechsel-german (1.5B) 14.5
gpt2-wechsel-german-ds-meg (117M) 26.4
gpt2-wechsel-german (117M) 26.8
gpt2 (retrained from scratch) (117M) 27.63

Other German language models

License

MIT

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