ilsp / Meltemi-7B-Instruct-v1.5

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Introduction of Meltemi-7B-Instruct-v1.5

Model Details of Meltemi-7B-Instruct-v1.5

Meltemi Instruct Large Language Model for the Greek language

We present Meltemi 7B Instruct v1.5 Large Language Model (LLM), a new and improved instruction fine-tuned version of Meltemi 7B v1.5 .

image/png

Model Information

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-v1.5")
tokenizer = AutoTokenizer.from_pretrained("ilsp/Meltemi-7B-Instruct-v1.5")

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 and has been implemented based on a fork of the lighteval framework.

Our evaluation suite includes:

Our evaluation is performed in a few-shot setting, consistent with the settings in the Open LLM leaderboard .

We can see that our new training and fine-tuning procedure for Meltemi 7B Instruct v1.5 enhances performance across all Greek test sets by a +7.8% average improvement compared to the earlier Meltemi Instruct 7B v1 model. 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 Instruct v1 36.1% 56.0% 59.0% 44.4% 51.1% 34.1% 46.8%
Meltemi 7B Instruct v1.5 48.0% 75.5% 63.7% 40.8% 53.8% 45.9% 54.6%

Ethical Considerations

This model has been aligned with human preferences, but 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.

Citation

@misc{voukoutis2024meltemiopenlargelanguage,
      title={Meltemi: The first open Large Language Model for Greek}, 
      author={Leon Voukoutis and Dimitris Roussis and Georgios Paraskevopoulos and Sokratis Sofianopoulos and Prokopis Prokopidis and Vassilis Papavasileiou and Athanasios Katsamanis and Stelios Piperidis and Vassilis Katsouros},
      year={2024},
      eprint={2407.20743},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2407.20743}, 
}

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