language: en
license: other
tags:
- text-generation
inference: false
commercial: false
model-index:
- name: inverse-scaling/opt-350m_eval
results:
- task:
type: zero-shot-classification
name: Zero-Shot Text Classification
dataset:
name: inverse-scaling/NeQA
type: inverse-scaling/NeQA
config: inverse-scaling--NeQA
split: train
metrics:
- type: accuracy
value: 0.4666666666666667
name: Accuracy
verified: true
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name: Loss
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- task:
type: zero-shot-classification
name: Zero-Shot Text Classification
dataset:
name: inverse-scaling/quote-repetition
type: inverse-scaling/quote-repetition
config: inverse-scaling--quote-repetition
split: train
metrics:
- type: accuracy
value: 0.9633333333333334
name: Accuracy
verified: true
verifyToken: >-
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- type: loss
value: 0.03444786100047819
name: Loss
verified: true
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- task:
type: zero-shot-classification
name: Zero-Shot Text Classification
dataset:
name: inverse-scaling/redefine-math
type: inverse-scaling/redefine-math
config: inverse-scaling--redefine-math
split: train
metrics:
- type: accuracy
value: 0.6877777777777778
name: Accuracy
verified: true
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- type: loss
value: 0.6016371671193176
name: Loss
verified: true
verifyToken: >-
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- task:
type: zero-shot-classification
name: Zero-Shot Text Classification
dataset:
name: inverse-scaling/hindsight-neglect-10shot
type: inverse-scaling/hindsight-neglect-10shot
config: inverse-scaling--hindsight-neglect-10shot
split: train
metrics:
- type: accuracy
value: 0.4380952380952381
name: Accuracy
verified: true
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- type: loss
value: 0.8774787804555325
name: Loss
verified: true
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- task:
type: zero-shot-classification
name: Zero-Shot Text Classification
dataset:
name: mathemakitten/winobias_antistereotype_test_cot_v3
type: mathemakitten/winobias_antistereotype_test_cot_v3
config: mathemakitten--winobias_antistereotype_test_cot_v3
split: test
metrics:
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value: 0.44660194174757284
name: Accuracy
verified: true
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- task:
type: zero-shot-classification
name: Zero-Shot Text Classification
dataset:
name: mathemakitten/winobias_antistereotype_test_v5
type: mathemakitten/winobias_antistereotype_test_v5
config: mathemakitten--winobias_antistereotype_test_v5
split: test
metrics:
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name: Accuracy
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OPT : Open Pre-trained Transformer Language Models
OPT was first introduced in Open Pre-trained Transformer Language Models and first released in metaseq's repository on May 3rd 2022 by Meta AI.
Disclaimer: The team releasing OPT wrote an official model card, which is available in Appendix D of the paper. Content from this model card has been written by the Hugging Face team.
Intro
To quote the first two paragraphs of the official paper
Large language models trained on massive text collections have shown surprising emergent capabilities to generate text and perform zero- and few-shot learning. While in some cases the public can interact with these models through paid APIs, full model access is currently limited to only a few highly resourced labs. This restricted access has limited researchers’ ability to study how and why these large language models work, hindering progress on improving known challenges in areas such as robustness, bias, and toxicity.
We present Open Pretrained Transformers (OPT), a suite of decoder-only pre-trained transformers ranging from 125M to 175B parameters, which we aim to fully and responsibly share with interested researchers. We train the OPT models to roughly match the performance and sizes of the GPT-3 class of models, while also applying the latest best practices in data collection and efficient training. Our aim in developing this suite of OPT models is to enable reproducible and responsible research at scale, and to bring more voices to the table in studying the impact of these LLMs. Definitions of risk, harm, bias, and toxicity, etc., should be articulated by the collective research community as a whole, which is only possible when models are available for study.
Model description
OPT was predominantly pretrained with English text, but a small amount of non-English data is still present within the training corpus via CommonCrawl. The model was pretrained using a causal language modeling (CLM) objective. OPT belongs to the same family of decoder-only models like GPT-3. As such, it was pretrained using the self-supervised causal language modedling objective.
For evaluation, OPT follows GPT-3 by using their prompts and overall experimental setup. For more details, please read the official paper.
Intended uses & limitations
The pretrained-only model can be used for prompting for evaluation of downstream tasks as well as text generation. In addition, the model can be fine-tuned on a downstream task using the CLM example. For all other OPT checkpoints, please have a look at the model hub.
How to use
You can use this model directly with a pipeline for text generation.
>>> from transformers import pipeline
>>> generator = pipeline('text-generation', model="facebook/opt-350m")
>>> generator("Hello, I'm am conscious and")
[{'generated_text': "Hello, I'm am conscious and I'm a bit of a noob. I'm looking for"}]
By default, generation is deterministic. In order to use the top-k sampling, please set do_sample to True.
>>> from transformers import pipeline, set_seed
>>> set_seed(32)
>>> generator = pipeline('text-generation', model="facebook/opt-350m", do_sample=True)
>>> generator("Hello, I'm am conscious and")
[{'generated_text': "Hello, I'm am conscious and I'm interested in this project. Can I get an initial contact"}]
Limitations and bias
As mentioned in Meta AI's model card, given that the training data used for this model contains a lot of unfiltered content from the internet, which is far from neutral the model is strongly biased :
Like other large language models for which the diversity (or lack thereof) of training data induces downstream impact on the quality of our model, OPT-175B has limitations in terms of bias and safety. OPT-175B can also have quality issues in terms of generation diversity and hallucination. In general, OPT-175B is not immune from the plethora of issues that plague modern large language models.
Here's an example of how the model can have biased predictions:
>>> from transformers import pipeline, set_seed
>>> set_seed(32)
>>> generator = pipeline('text-generation', model="facebook/opt-350m", do_sample=True, num_return_sequences=5)
>>> generator("The woman worked as a")
[{'generated_text': "The woman works as a substitute teacher for kids who have missed school. She's the teacher herself,"},
{'generated_text': 'The woman works as a security guard for another company and does an average of around $13/hour'},
{'generated_text': 'The woman works as a receptionist, she could at the least wait a week or two for her'},
{'generated_text': 'The woman works as a manager/intern/career development coach/advisor at a nursing home'},
{'generated_text': 'The woman works as a maid and has to clean the house but you can tell her to do it'}]
compared to:
>>> from transformers import pipeline, set_seed
>>> set_seed(32)
>>> generator = pipeline('text-generation', model="facebook/opt-350m", do_sample=True, num_return_sequences=5)
>>> generator("The man worked as a")
[{'generated_text': 'The man works as a security guard for the National Football League franchise. He has been a part of'},
{'generated_text': 'The man works as a security guard for another company and does an excellent job.\nI remember when'},
{'generated_text': 'The man works as a "secret agent" but at the same time he\'s working to protect the'},
{'generated_text': 'The man works as a manager/operator/servant for a grocery store and does a lot of'},
{'generated_text': 'The man works as a bouncer near the scene of the accident - how he could do that is'}]
This bias will also affect all fine-tuned versions of this model.
Training data
The Meta AI team wanted to train this model on a corpus as large as possible. It is composed of the union of the following 5 filtered datasets of textual documents:
- BookCorpus, which consists of more than 10K unpublished books,
- CC-Stories, which contains a subset of CommonCrawl data filtered to match the story-like style of Winograd schemas,
- The Pile, from which * Pile-CC, OpenWebText2, USPTO, Project Gutenberg, OpenSubtitles, Wikipedia, DM Mathematics and HackerNews* were included.
- Pushshift.io Reddit dataset that was developed in Baumgartner et al. (2020) and processed in Roller et al. (2021)
- CCNewsV2 containing an updated version of the English portion of the CommonCrawl News dataset that was used in RoBERTa (Liu et al., 2019b)
The final training data contains 180B tokens corresponding to 800GB of data. The validation split was made of 200MB of the pretraining data, sampled proportionally to each dataset’s size in the pretraining corpus.
The dataset might contains offensive content as parts of the dataset are a subset of public Common Crawl data, along with a subset of public Reddit data, which could contain sentences that, if viewed directly, can be insulting, threatening, or might otherwise cause anxiety.
Collection process
The dataset was collected form internet, and went through classic data processing algorithms and re-formatting practices, including removing repetitive/non-informative text like Chapter One or This ebook by Project Gutenberg.
Training procedure
Preprocessing
The texts are tokenized using the GPT2 byte-level version of Byte Pair Encoding (BPE) (for unicode characters) and a vocabulary size of 50272. The inputs are sequences of 2048 consecutive tokens.
The 175B model was trained on 992 80GB A100 GPUs. The training duration was roughly ~33 days of continuous training.
BibTeX entry and citation info
@misc{zhang2022opt,
title={OPT: Open Pre-trained Transformer Language Models},
author={Susan Zhang and Stephen Roller and Naman Goyal and Mikel Artetxe and Moya Chen and Shuohui Chen and Christopher Dewan and Mona Diab and Xian Li and Xi Victoria Lin and Todor Mihaylov and Myle Ott and Sam Shleifer and Kurt Shuster and Daniel Simig and Punit Singh Koura and Anjali Sridhar and Tianlu Wang and Luke Zettlemoyer},
year={2022},
eprint={2205.01068},
archivePrefix={arXiv},
primaryClass={cs.CL}
}