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import pandas as pd
from tqdm import tqdm
import logging
import re
from word2number import w2n
from dataflow.utils.utils import get_logger
class StringProcessor:
"""
A class that encapsulates various string processing functions for mathematical expressions.
"""
@staticmethod
def _fix_fracs(string):
"""
Fixes fraction expressions in the string, ensuring they are properly formatted as \frac{a}{b}.
"""
substrs = string.split("\\frac")
new_str = substrs[0]
if len(substrs) > 1:
for substr in substrs[1:]:
new_str += "\\frac"
if len(substr) > 0 and substr[0] == "{":
new_str += substr
else:
if len(substr) >= 2:
a, b = substr[0], substr[1]
if b != "{":
new_str += f"{{{a}}}{{{b}}}{substr[2:]}" if len(substr) > 2 else f"{{{a}}}{{{b}}}"
else:
new_str += f"{{{a}}}{b}{substr[2:]}" if len(substr) > 2 else f"{{{a}}}{b}"
else:
return string
return new_str
@staticmethod
def _fix_a_slash_b(string):
"""
Fixes cases where a fraction is represented as a simple division (e.g., a/b) and converts it to \frac{a}{b}.
"""
if len(string.split("/")) != 2:
return string
a, b = string.split("/")
try:
a, b = int(a) if "sqrt" not in a else a, int(b) if "sqrt" not in b else b
assert string == f"{a}/{b}"
return f"\\frac{{{a}}}{{{b}}}"
except:
return string
@staticmethod
def _fix_sqrt(string):
"""
Ensures that square root expressions are properly formatted as \sqrt{...}.
"""
return re.sub(r"\\sqrt(\w+)", r"\\sqrt{\1}", string)
@staticmethod
def convert_word_number(text: str) -> str:
"""
Converts a word representation of a number to a digit.
"""
try:
return str(w2n.word_to_num(text))
except:
return text
# Unit Text Class to Manage Unit Texts
class UnitTextManager:
"""
A class that encapsulates unit text management to remove unwanted unit terms from strings.
"""
def __init__(self):
"""
Initializes the unit texts and their plural forms.
"""
self.unit_texts = [
"east", "degree", "mph", "kmph", "ft", "m sqaure", "m east", "sq m", "deg", "mile", "q .", "monkey", "prime",
"ratio", "profit of rs", "rd", "o", "gm", "p . m", "lb", "tile", "per", "dm", "lt", "gain", "ab", "way", "west",
"a .", "b .", "c .", "d .", "e .", "f .", "g .", "h .", "t", "a", "h", "no change", "men", "soldier", "pie", "bc",
"excess", "st", "inches", "noon", "percent", "by", "gal", "kmh", "c", "acre", "rise", "a . m", "th", "π r 2", "sq",
"mark", "l", "toy", "coin", "sq . m", "gallon", "° f", "profit", "minw", "yr", "women", "feet", "am", "pm", "hr",
"cu cm", "square", "v â € ™", "are", "rupee", "rounds", "cubic", "cc", "mtr", "s", "ohm", "number", "kmph", "day",
"hour", "minute", "min", "second", "man", "woman", "sec", "cube", "mt", "sq inch", "mp", "∏ cm ³", "hectare",
"more", "sec", "unit", "cu . m", "cm 2", "rs .", "rs", "kg", "g", "month", "km", "m", "cm", "mm", "apple", "liter",
"loss", "yard", "pure", "year", "increase", "decrease", "d", "less", "Surface", "litre", "pi sq m", "s .", "metre",
"meter", "inch",
]
self.unit_texts.extend([t + "s" for t in self.unit_texts])
def clean_units(self, string: str):
"""
Cleans the string by removing unit terms from it.
"""
for unit_text in self.unit_texts:
string = re.sub(r"(^|\W)" + unit_text + r"($|\W)", r"\1\2", string)
return string
# Main String Processing Class
class StringCleaner:
"""
A class responsible for cleaning and formatting strings in mathematical expressions.
"""
def __init__(self, unit_manager: UnitTextManager):
"""
Initializes the StringCleaner class with a unit manager.
"""
self.unit_manager = unit_manager
def strip_string(self, string, skip_unit=False):
"""
Strips unwanted characters and units from the string.
"""
string = str(string).strip().replace("\n", "").rstrip(".").replace("\\!", "")
string = re.sub(r"\\begin\{array\}\{.*?\}", r"\\begin{pmatrix}", string)
string = re.sub(r"\\end\{array\}", r"\\end{pmatrix}", string).replace("bmatrix", "pmatrix")
string = string.replace("tfrac", "frac").replace("dfrac", "frac").replace("\\neq", "\\ne").replace("\\leq", "\\le").replace("\\geq", "\\ge")
string = string.replace("\\left", "").replace("\\right", "").replace("\\{", "{").replace("\\}", "}")
# Clean unit texts if needed
if not skip_unit:
string = self.unit_manager.clean_units(string)
string = string.replace("^{\\circ}", "").replace("^\\circ", "").replace("\\$", "").replace("$", "").replace("\\(", "").replace("\\)", "")
string = StringProcessor.convert_word_number(string)
string = re.sub(r"\\text\{(.*?)\}", r"\1", string)
for key in ["x=", "y=", "z=", "x\\in", "y\\in", "z\\in", "x\\to", "y\\to", "z\\to"]:
string = string.replace(key, "")
string = string.replace("\\emptyset", r"{}").replace("(-\\infty,\\infty)", "\\mathbb{R}")
string = string.replace("%", "").replace(" .", " 0.").replace("{.", "{0.")
return string
# Core Answer Extraction Logic Class
class AnswerExtractor:
"""
A class responsible for extracting the final answer from a prediction string.
"""
def __init__(self, string_cleaner: StringCleaner):
"""
Initializes the AnswerExtractor class with a string cleaner.
"""
self.string_cleaner = string_cleaner
self.logger = get_logger()
def extract_answer(self, pred_str, data_name, use_last_number=True):
"""
Extracts the final answer from the prediction string, processing various formats.
"""
if not pred_str:
pred_str = ""
pred_str = str(pred_str).replace("\u043a\u0438", "")
# Handle special cases based on data_name or pattern
if "final answer is $" in pred_str and "$. I hope" in pred_str:
pred = pred_str.split("final answer is $", 1)[1].split("$. I hope", 1)[0].strip()
elif "boxed" in pred_str:
pred = self._extract_boxed_answer(pred_str)
elif "he answer is" in pred_str:
pred = pred_str.split("he answer is")[-1].strip()
else:
pred = self._get_last_number_answer(pred_str, use_last_number)
pred = self.string_cleaner.strip_string(pred, skip_unit=data_name in ["carp_en", "minerva_math"])
return pred
def _extract_boxed_answer(self, pred_str):
"""
Extracts answers enclosed in 'boxed' notation.
"""
ans = pred_str.split("boxed")[-1]
if ans.startswith("{"):
return self._extract_bracketed_answer(ans)
else:
return ans.split("$")[0].strip()
def _extract_bracketed_answer(self, ans):
"""
Handles answers that are enclosed within brackets.
"""
stack = 1
result = ""
for c in ans[1:]:
if c == "{":
stack += 1
result += c
elif c == "}":
stack -= 1
if stack == 0:
break
result += c
else:
result += c
return result
def _get_last_number_answer(self, pred_str, use_last_number):
"""
Extracts the last number from the string if use_last_number is True.
"""
if use_last_number:
pattern = "-?\d*\.?\d+"
pred = re.findall(pattern, pred_str.replace(",", ""))
return pred[-1] if pred else ""
return ""
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