45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
"""Alpaca format strategy."""
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from typing import List
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from pipeline.tokenizer import BpeTokenizer
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from pipeline.strategies.base import PromptStrategy
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from pipeline.strategies.factory import StrategyFactory
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@StrategyFactory.register("alpaca")
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class AlpacaStrategy(PromptStrategy):
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"""Alpaca format:"""
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def __init__(
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self,
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tokenizer: BpeTokenizer,
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instruction_start: str = "### Instruction:\n",
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response_start: str = "### Response:\n",
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response_suffix: str = "\n<｜end▁of▁sentence｜>",
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):
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super().__init__(tokenizer)
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self.instruction_start = instruction_start
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self.response_start = response_start
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self.response_suffix = response_suffix
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self._instruction_start_ids = self._encode_format(instruction_start)
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self._separator_ids = self._encode_format("\n\n")
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self._response_start_ids = self._encode_format(response_start)
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self._response_suffix_ids = self._encode_format(response_suffix)
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@property
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def name(self) -> str:
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return "alpaca"
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def assemble_prompt(self, query_tokens: List[int]) -> List[int]:
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return (
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self._instruction_start_ids
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+ query_tokens
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+ self._separator_ids
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+ self._response_start_ids
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)
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def assemble_response(self, response_tokens: List[int]) -> List[int]:
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return response_tokens + self._response_suffix_ids
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