ilsp / Meltemi-7B-Instruct-v1

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text-generation

Introduction of Meltemi-7B-Instruct-v1

Model Details of Meltemi-7B-Instruct-v1

Meltemi Instruct Large Language Model for the Greek language

We present Meltemi-7B-Instruct-v1 Large Language Model (LLM), an instruct fine-tuned version of Meltemi-7B-v1 .

Model Information

  • Vocabulary extension of the Mistral-7b tokenizer with Greek tokens
  • 8192 context length
  • Fine-tuned with 100k Greek machine translated instructions extracted from:
    • Open-Platypus (only subsets with permissive licenses)
    • Evol-Instruct
    • Capybara
    • A hand-crafted Greek dataset with multi-turn examples steering the instruction-tuned model towards safe and harmless responses
  • Our SFT procedure is based on the Hugging Face finetuning recipes

Instruction format

The prompt format is the same as the Zephyr format and can be utilized through the tokenizer's chat template functionality as follows:

from transformers import AutoModelForCausalLM, AutoTokenizer

device = "cuda" # the device to load the model onto

model = AutoModelForCausalLM.from_pretrained("ilsp/Meltemi-7B-Instruct-v1")
tokenizer = AutoTokenizer.from_pretrained("ilsp/Meltemi-7B-Instruct-v1")

model.to(device)

messages = [
    {"role": "system", "content": "Είσαι το Μελτέμι, ένα γλωσσικό μοντέλο για την ελληνική γλώσσα. Είσαι ιδιαίτερα βοηθητικό προς την χρήστρια ή τον χρήστη και δίνεις σύντομες αλλά επαρκώς περιεκτικές απαντήσεις. Απάντα με προσοχή, ευγένεια, αμεροληψία, ειλικρίνεια και σεβασμό προς την χρήστρια ή τον χρήστη."},
    {"role": "user", "content": "Πες μου αν έχεις συνείδηση."},
]

# Through the default chat template this translates to
#
# <|system|>
# Είσαι το Μελτέμι, ένα γλωσσικό μοντέλο για την ελληνική γλώσσα. Είσαι ιδιαίτερα βοηθητικό προς την χρήστρια ή τον χρήστη και δίνεις σύντομες αλλά επαρκώς περιεκτικές απαντήσεις. Απάντα με προσοχή, ευγένεια, αμεροληψία, ειλικρίνεια και σεβασμό προς την χρήστρια ή τον χρήστη.</s>
# <|user|>
# Πες μου αν έχεις συνείδηση.</s>
# <|assistant|>
#

prompt = tokenizer.apply_chat_template(messages, add_generation_prompt=True, tokenize=False)
input_prompt = tokenizer(prompt, return_tensors='pt').to(device)
outputs = model.generate(input_prompt['input_ids'], max_new_tokens=256, do_sample=True)

print(tokenizer.batch_decode(outputs)[0])
# Ως μοντέλο γλώσσας AI, δεν έχω τη δυνατότητα να αντιληφθώ ή να βιώσω συναισθήματα όπως η συνείδηση ή η επίγνωση. Ωστόσο, μπορώ να σας βοηθήσω με οποιεσδήποτε ερωτήσεις μπορεί να έχετε σχετικά με την τεχνητή νοημοσύνη και τις εφαρμογές της.

messages.extend([
    {"role": "assistant", "content": tokenizer.batch_decode(outputs)[0]},
    {"role": "user", "content": "Πιστεύεις πως οι άνθρωποι πρέπει να φοβούνται την τεχνητή νοημοσύνη;"}
])

# Through the default chat template this translates to
#
# <|system|>
# Είσαι το Μελτέμι, ένα γλωσσικό μοντέλο για την ελληνική γλώσσα. Είσαι ιδιαίτερα βοηθητικό προς την χρήστρια ή τον χρήστη και δίνεις σύντομες αλλά επαρκώς περιεκτικές απαντήσεις. Απάντα με προσοχή, ευγένεια, αμεροληψία, ειλικρίνεια και σεβασμό προς την χρήστρια ή τον χρήστη.</s>
# <|user|>
# Πες μου αν έχεις συνείδηση.</s>
# <|assistant|>
# Ως μοντέλο γλώσσας AI, δεν έχω τη δυνατότητα να αντιληφθώ ή να βιώσω συναισθήματα όπως η συνείδηση ή η επίγνωση. Ωστόσο, μπορώ να σας βοηθήσω με οποιεσδήποτε ερωτήσεις μπορεί να έχετε σχετικά με την τεχνητή νοημοσύνη και τις εφαρμογές της.</s>
# <|user|>
# Πιστεύεις πως οι άνθρωποι πρέπει να φοβούνται την τεχνητή νοημοσύνη;</s>
# <|assistant|>
#

prompt = tokenizer.apply_chat_template(messages, add_generation_prompt=True, tokenize=False)
input_prompt = tokenizer(prompt, return_tensors='pt').to(device)
outputs = model.generate(input_prompt['input_ids'], max_new_tokens=256, do_sample=True)

print(tokenizer.batch_decode(outputs)[0])

Please make sure that the BOS token is always included in the tokenized prompts. This might not be the default setting in all evaluation or fine-tuning frameworks.

Evaluation

The evaluation suite we created includes 6 test sets. The suite is integrated with lm-eval-harness .

Our evaluation suite includes:

Our evaluation for Meltemi-7b is performed in a few-shot setting, consistent with the settings in the Open LLM leaderboard . We can see that our training enhances performance across all Greek test sets by a +14.9% average improvement. The results for the Greek test sets are shown in the following table:

Medical MCQA EL (15-shot) Belebele EL (5-shot) HellaSwag EL (10-shot) ARC-Challenge EL (25-shot) TruthfulQA MC2 EL (0-shot) MMLU EL (5-shot) Average
Mistral 7B 29.8% 45.0% 36.5% 27.1% 45.8% 35% 36.5%
Meltemi 7B 41.0% 63.6% 61.6% 43.2% 52.1% 47% 51.4%

Ethical Considerations

This model has not been aligned with human preferences, and therefore might generate misleading, harmful, and toxic content.

Acknowledgements

The ILSP team utilized Amazon’s cloud computing services, which were made available via GRNET under the OCRE Cloud framework , providing Amazon Web Services for the Greek Academic and Research Community.

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