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README.md
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tags: []
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---
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Slightly modified version of `cl100k_base` that supports Dolma 1.x and Dolma 2.x special tokens.
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## Special tokens
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This tokenizer supports the following special tokens:
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- `<|extra_id_0|>`: Not used.
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- `<|endoftext|>`: Used to mark both beginning and end of text.
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- `<|fim_prefix|>`: Used to mark the prefix fill-in-the-middle request.
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- `<|fim_middle|>`: Used to mark the middle fill-in-the-middle request.
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- `<|fim_suffix|>`: Used to mark the suffix fill-in-the-middle request.
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- `|||PHONE_NUMBER|||`: Not used. Kept for compatibility with Dolma 1.x.
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- `|||EMAIL_ADDRESS|||`: Not used. Kept for compatibility with Dolma 1.x.
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- `|||IP_ADDRESS|||`: Not used. Kept for compatibility with Dolma 1.x.
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- `<|im_start|>`: Indicates the beginning of a message (turn in a conversation).
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- `<|im_end|>`: Indicates the end of a message (turn in a conversation).
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- `<|extra_id_1|>`: Not used.
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- `<|extra_id_2|>`: Not used.
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- `<|extra_id_3|>`: Not used.
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- `<|extra_id_4|>`: Not used.
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- `<|extra_id_5|>`: Not used.
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- `<|extra_id_6|>`: Not used.
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- `<|extra_id_7|>`: Not used.
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- `<|extra_id_8|>`: Not used.
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- `<|extra_id_9|>`: Not used.
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- `<|extra_id_10|>`: Not used.
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- `<|endofprompt|>`: Not Used.
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- `<|pad|>`: Symbol to pad input sequences.
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## Chat template
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The chat template is as follows (**for reference only**, actual template is in `tokenizer_config.json`):
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```jinja
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{% set has_system = messages|selectattr('role', 'equalto', 'system')|list|length > 0 %}
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{% if not has_system %}
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{{ '<|im_start|>system
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You are Olmo, a helpful AI assistant built by Ai2. Your date cutoff is December 2024, and your model weights are available at https://huggingface.co/allenai.<|im_end|>
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' }}
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{% endif %}
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{% for message in messages %}
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{% if message['role'] == 'system' %}
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{{ '<|im_start|>system
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' + message['content'] }}
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{% if message.get('functions', none) is not none %}
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{{ ' <functions>' + message['functions'] + '</functions><|im_end|>
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' }}
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{% else %}
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{{ ' You do not currently have access to any functions. <functions></functions><|im_end|>
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' }}
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{% endif %}
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{% elif message['role'] == 'user' %}
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{% if message.get('functions', none) is not none %}
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{{ '<|im_start|>user
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' + message['content'] + '
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' + '<functions>' + message['functions'] + '</functions><|im_end|>
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' }}
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{% else %}
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{{ '<|im_start|>user
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' + message['content'] + '<|im_end|>
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' }}
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{% endif %}
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{% elif message['role'] == 'assistant' %}
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{{ '<|im_start|>assistant
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' }}
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{% if message.get('content', none) is not none %}
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{{ message['content'] }}
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{% endif %}
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{% if message.get('function_calls', none) is not none %}
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{{ '<function_calls>' + message['function_calls'] + '</function_calls>' }}
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{% endif %}
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{% if not loop.last %}
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{{ '<|im_end|>' + '
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' }}
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{% else %}
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{{ eos_token }}
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{% endif %}
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{% elif message['role'] == 'environment' %}
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{{ '<|im_start|>environment
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' + message['content'] + '<|im_end|>
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' }}
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{% endif %}
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{% if loop.last and add_generation_prompt %}
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{{ '<|im_start|>assistant
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<think>' }}
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{% endif %}
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{% endfor %}
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```
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tags: []
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---
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Compatible with new reasoning parser.
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