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94 lines
3.1 KiB
Python
94 lines
3.1 KiB
Python
"""Spell backward task generator"""
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import re
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from dataclasses import dataclass
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from random import Random
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from typing import Any, Optional
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from ..coaching import AttributeType, BaseCurriculum, RangeAttributeDefinition
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from ..data import read_data_file
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from ..factory import ProceduralDataset, register_dataset
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@dataclass
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class SpellBackwardConfig:
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"""Configuration for spelling words backward task generation"""
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min_word_len: int = 3 # Minimum word length
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max_word_len: int = 20 # Maximum word length
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seed: Optional[int] = None
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size: int = 500 # Virtual dataset size
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def validate(self) -> None:
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"""Validate configuration parameters"""
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assert self.min_word_len > 0, "min_word_len must be positive"
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assert self.max_word_len >= self.min_word_len, "max_word_len must be >= min_word_len"
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class SpellBackwardDataset(ProceduralDataset):
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"""Generates tasks to spell words backward"""
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def __init__(self, config: SpellBackwardConfig):
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super().__init__(config=config, seed=config.seed, size=config.size)
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# Load and preprocess text
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text = read_data_file("in_the_year_2889.txt")
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# Extract words and clean them to contain only alphanumeric characters
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self.words = [
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word
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for word in re.findall(r"\b\w+\b", text)
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if word.isalnum() and config.min_word_len <= len(word) <= config.max_word_len
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]
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def __getitem__(self, idx: int) -> dict:
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"""Generate a single spell backward task"""
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rng = Random(self.seed + idx)
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# Select random word
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word = rng.choice(self.words)
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answer = word[::-1]
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return {
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"question": f"Spell this word backward (example: sun -> nus): {word}",
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"answer": answer,
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"metadata": {
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"word": word,
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"word_len": len(word),
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"difficulty": {"word_len": (self.config.min_word_len, self.config.max_word_len)},
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},
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}
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def score_answer(self, answer: Optional[str], entry: dict[str, Any]) -> float:
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reward = 0.0
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expected_answer = entry["answer"]
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if isinstance(answer, str):
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try:
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if expected_answer.lower() == answer.lower():
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reward = 1.0
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else:
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reward = 0.05
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except:
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reward = 0.0
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return reward
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class SpellBackwardCurriculum(BaseCurriculum):
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def __init__(self):
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super().__init__(SpellBackwardCurriculum.__name__, SpellBackwardConfig)
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# Define attributes
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self._define_attributes(
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RangeAttributeDefinition(
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name="word_len",
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levels=[5, 10, 20, 30],
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default_level=1,
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description="Word length",
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attr_type=AttributeType.APPEND,
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min_value=3,
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lower_field_name="min_word_len",
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upper_field_name="max_word_len",
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),
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)
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register_dataset("spell_backward", SpellBackwardDataset, SpellBackwardConfig, SpellBackwardCurriculum)
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