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Delete grammar_chatbot.py
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grammar_chatbot.py
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from transformers import pipeline, AutoTokenizer, AutoModelForSeq2SeqLM
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import torch
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import random
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from typing import Dict, List
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class GrammarChatbot:
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def __init__(self):
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"""Initialize models for fluent corrections"""
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# Initialize models
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self.grammar_model = pipeline(
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"text2text-generation",
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model="vennify/t5-base-grammar-correction",
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device=0 if torch.cuda.is_available() else -1
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)
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# Fluent paraphrasing model
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self.paraphrase_tokenizer = AutoTokenizer.from_pretrained("humarin/chatgpt_paraphraser_on_T5_base")
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self.paraphrase_model = AutoModelForSeq2SeqLM.from_pretrained("humarin/chatgpt_paraphraser_on_T5_base")
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# Enhanced conversation components
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self.compliments = [
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"Great job! Your English is improving!",
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"Nice improvement! Keep it up!",
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"You're doing well with your practice!",
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"Good effort! I can see you're trying hard!",
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"Excellent try! You're getting better!",
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"Well done! That was much better!",
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"Impressive! Your sentence structure is improving!"
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]
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# Organized question bank by categories
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self.question_categories = {
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"daily_life": [
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"What did you do this morning?",
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"How do you usually spend your evenings?",
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"What's your morning routine like?",
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"Do you have any plans for this weekend?",
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"What time do you usually wake up?"
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],
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"hobbies": [
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"What hobbies do you enjoy in your free time?",
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"Have you picked up any new hobbies recently?",
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"Do you prefer indoor or outdoor activities?",
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"What's something you've always wanted to try?",
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"Do you play any musical instruments?"
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],
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"food": [
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"What's your favorite comfort food?",
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"Do you enjoy cooking? What's your specialty?",
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"What's the most unusual food you've ever tried?",
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"Do you prefer sweet or savory snacks?",
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"What's your go-to breakfast?"
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],
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"travel": [
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"If you could visit any country, where would you go?",
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"What's the most beautiful place you've ever seen?",
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"Do you prefer beach vacations or city trips?",
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"What's your favorite travel memory?",
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"What's the next place you'd like to visit?"
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],
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"technology": [
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"How do you use technology in your daily life?",
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"What's your opinion about social media?",
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"Do you think AI will change our lives significantly?",
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"What tech gadget couldn't you live without?",
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"How has technology changed your work/studies?"
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],
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"future": [
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"Where do you see yourself in five years?",
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"What's one skill you'd like to learn?",
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"Do you have any big goals for this year?",
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"What would your perfect day look like?",
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"What's something you want to achieve?"
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]
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}
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self.current_question = None
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self.current_category = None
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self.conversation_history = []
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def correct_grammar(self, text: str) -> str:
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"""Basic grammar correction"""
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result = self.grammar_model(
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text,
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max_length=256,
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num_beams=4,
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early_stopping=True
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)
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return result[0]['generated_text']
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def fluent_correction(self, text: str) -> str:
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"""Create fluent, natural rewrites"""
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input_ids = self.paraphrase_tokenizer(
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f"paraphrase: {text}",
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return_tensors="pt",
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max_length=256,
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truncation=True
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).input_ids
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outputs = self.paraphrase_model.generate(
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input_ids,
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temperature=0.7,
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max_length=256,
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num_beams=5,
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early_stopping=True
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)
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return self.paraphrase_tokenizer.decode(outputs[0], skip_special_tokens=True)
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def _get_next_question(self) -> str:
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"""Select next question based on conversation context"""
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# If we're continuing a category, use follow-up questions
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if self.current_category and random.random() < 0.6: # 60% chance to stay on topic
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return random.choice(self.question_categories[self.current_category])
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# Otherwise select a new random category
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self.current_category = random.choice(list(self.question_categories.keys()))
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return random.choice(self.question_categories[self.current_category])
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def generate_response(self, user_input: str) -> Dict:
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"""Generate a conversational response"""
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# Store conversation history
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self.conversation_history.append(("user", user_input))
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# Correct the input
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corrected = self.fluent_correction(user_input)
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is_corrected = corrected.lower() != user_input.lower()
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# Generate response
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response = {
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"original_text": user_input,
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"corrected_text": corrected,
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"is_corrected": is_corrected,
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"compliment": random.choice(self.compliments) if is_corrected else "",
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"next_question": self._get_next_question(),
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"end_conversation": False
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}
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# Update state
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self.current_question = response["next_question"]
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self.conversation_history.append(("bot", response["next_question"]))
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return response
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def start_conversation(self) -> Dict:
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"""Initialize a new conversation"""
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self.conversation_history = []
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self.current_category = random.choice(list(self.question_categories.keys()))
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self.current_question = random.choice(self.question_categories[self.current_category])
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return {
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"message": "Hello! I'm your English practice partner. Let's chat!",
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"next_question": self.current_question,
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"end_conversation": False
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}
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def get_conversation_history(self) -> List[tuple]:
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"""Get the complete conversation history"""
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return self.conversation_history
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