mirror of
https://github.com/open-thought/reasoning-gym.git
synced 2026-04-19 12:58:07 +00:00
66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
"""Spell backward task generator"""
|
|
|
|
import re
|
|
from dataclasses import dataclass
|
|
from random import Random
|
|
from typing import Any, Dict, Optional
|
|
|
|
from ..data import read_data_file
|
|
from ..factory import ProceduralDataset, register_dataset
|
|
|
|
|
|
@dataclass
|
|
class SpellBackwardConfig:
|
|
"""Configuration for spelling words backward task generation"""
|
|
|
|
min_word_len: int = 3 # Minimum word length
|
|
seed: Optional[int] = None
|
|
size: int = 500 # Virtual dataset size
|
|
|
|
def validate(self) -> None:
|
|
"""Validate configuration parameters"""
|
|
assert self.min_word_len > 0, "min_word_len must be positive"
|
|
|
|
|
|
class SpellBackwardDataset(ProceduralDataset):
|
|
"""Generates tasks to spell words backward"""
|
|
|
|
def __init__(self, config: SpellBackwardConfig):
|
|
super().__init__(config=config, seed=config.seed, size=config.size)
|
|
|
|
# Load and preprocess text
|
|
text = read_data_file("in_the_year_2889.txt")
|
|
# Extract words and clean them to contain only alphanumeric characters
|
|
self.words = [
|
|
word for word in re.findall(r"\b\w+\b", text) if word.isalnum() and len(word) >= config.min_word_len
|
|
]
|
|
|
|
def __getitem__(self, idx: int) -> dict:
|
|
"""Generate a single spell backward task"""
|
|
rng = Random(self.seed + idx)
|
|
|
|
# Select random word
|
|
word = rng.choice(self.words)
|
|
answer = word[::-1]
|
|
|
|
return {
|
|
"question": f"Spell this word backward (example: sun -> nus): {word}",
|
|
"answer": answer,
|
|
"metadata": {"word": word, "word_len": len(word)},
|
|
}
|
|
|
|
def score_answer(self, answer: Optional[str], entry: Dict[str, Any]) -> float:
|
|
reward = 0.0
|
|
expected_answer = entry["answer"]
|
|
if answer is not None:
|
|
try:
|
|
if expected_answer.lower() == answer.lower():
|
|
reward = 1.0
|
|
else:
|
|
reward = 0.05
|
|
except:
|
|
reward = 0.01
|
|
return reward
|
|
|
|
|
|
register_dataset("spell_backward", SpellBackwardDataset, SpellBackwardConfig)
|