import PyPDF2 import re from typing import List, Dict, Tuple import json from collections import Counter import nltk from nltk.corpus import stopwords from nltk.tokenize import sent_tokenize, word_tokenize from sklearn.feature_extraction.text import TfidfVectorizer from sklearn.metrics.pairwise import cosine_similarity import pandas as pd import spacy Download required NLTK data nltk.download('punkt') nltk.download('stopwords') nltk.download('averaged_perceptron_tagger') Load spaCy model (run: python -m spacy download en_core_web_sm) nlp = spacy.load('en_core_web_sm')
def identify_sections(self) -> Dict[str, str]: """Identify and extract major sections from lecture notes""" lines = self.full_text.split('\n') current_section = "Introduction" sections = current_section: [] # Common urban planning section headers section_patterns = [ r'(?i)^(?:chapter|section|part)\s+\d+[:.\s]+(.+)$', r'(?i)^(\d+\.\d+)\s+(.+)$', r'(?i)^([A-Z][A-Z\s]5,)$', # ALL CAPS headers r'(?i)^(introduction|background|methodology|analysis|conclusion|references)$', r'(?i)^(zoning|transportation|land use|environmental|housing|infrastructure|sustainability)', r'(?i)^(smart growth|new urbanism|urban design|public participation|economic development)' ] for line in lines: line = line.strip() if not line: continue section_found = False for pattern in section_patterns: if re.match(pattern, line): current_section = line[:50] # Limit section name length sections[current_section] = [] section_found = True break if not section_found and current_section: sections[current_section].append(line) # Convert lists to strings self.sections = k: ' '.join(v) for k, v in sections.items() if v return self.sections
def _show_questions(self): questions = self.analyzer.generate_study_questions() print("\n❓ STUDY QUESTIONS:") for i, q in enumerate(questions, 1): print(f"\ni. q['question']") print(f" 💡 Hint: q['hint']") urban planning lecture notes pdf
def extract_text_from_pdf(self) -> str: """Extract text from PDF file""" text = "" with open(self.pdf_path, 'rb') as file: pdf_reader = PyPDF2.PdfReader(file) for page_num, page in enumerate(pdf_reader.pages): page_text = page.extract_text() self.pages_text.append( 'page_num': page_num + 1, 'text': page_text ) text += page_text + "\n" self.full_text = text return text
def create_summary(self) -> Dict: """Create a structured summary of the lecture notes""" summary = 'total_pages': len(self.pages_text), 'total_words': len(self.full_text.split()), 'key_topics': [c['term'] for c in self.key_concepts[:15]], 'case_studies_count': len(self.case_studies), 'main_sections': list(self.sections.keys())[:10], 'core_principles': self._extract_principles(), 'recommended_focus_areas': self._identify_focus_areas() return summary import PyPDF2 import re from typing import List,
def _show_case_studies(self): print("\n📋 CASE STUDIES:") for i, case in enumerate(self.analyzer.case_studies[:5], 1): print(f"\ni. case['title']") print(f" case['description'][:200]...")
def extract_key_concepts(self) -> List[Dict]: """Extract and rank key urban planning concepts""" stop_words = set(stopwords.words('english')) # Urban planning specific terminology planning_terms = [ 'zoning', 'land use', 'transportation', 'infrastructure', 'sustainability', 'urban design', 'smart growth', 'new urbanism', 'gentrification', 'affordable housing', 'public space', 'transit-oriented development', 'mixed-use', 'walkability', 'green infrastructure', 'climate resilience', 'urban renewal', 'community engagement', 'comprehensive plan', 'subdivision', 'environmental impact', 'historic preservation', 'urban sprawl', 'density', 'parking', 'complete streets', 'placemaking' ] # Tokenize and find frequencies words = word_tokenize(self.full_text.lower()) words = [w for w in words if w.isalpha() and w not in stop_words] # Count frequencies of planning terms concept_counts = Counter() for term in planning_terms: count = self.full_text.lower().count(term) if count > 0: concept_counts[term] = count # Extract context for each concept concepts = [] for concept, count in concept_counts.most_common(20): # Find sentences containing the concept sentences = sent_tokenize(self.full_text) context_sentences = [s for s in sentences if concept.lower() in s.lower()] context = context_sentences[:2] if context_sentences else [] concepts.append( 'term': concept, 'frequency': count, 'context': context ) self.key_concepts = concepts return concepts q in enumerate(questions
def _identify_focus_areas(self) -> List[str]: """Identify areas that need more attention based on complexity markers""" complexity_markers = [ 'important', 'crucial', 'essential', 'note that', 'remember', 'key point', 'significant', 'critical', 'fundamental' ] focus_areas = [] sentences = sent_tokenize(self.full_text) for sentence in sentences: for marker in complexity_markers: if marker in sentence.lower(): focus_areas.append(sentence[:100]) break return list(set(focus_areas))[:8]