Property News Search Engine

A Go-based search engine application specifically designed for property news articles in Indonesia. This project implements advanced search algorithms including TF-IDF with Cosine and Jaccard similarity measures.

Project Information

• Kelompok: 15
• Anggota: Muhammad Mahathir (2208107010056)

Interface Screenshots

Search Page

Results Page

Data Sources

The search engine crawls and indexes articles from three major Indonesian property news portals:

• PropertyAndTheCity.com
• PropertiTerkini.com
• Rumah123.com (Articles)

Scope (Ruang Lingkup)

1. Tren Nilai Properti

   • Analisis pergerakan harga properti
   • Faktor-faktor yang mempengaruhi nilai properti
   • Prediksi dan forecast nilai properti

2. Berita Bursa Perumahan

   • Perkembangan pasar properti
   • Kebijakan dan regulasi properti
   • Tren dan dinamika pasar perumahan

3. Listing Properti

   • Informasi properti yang dijual/disewa
   • Detail dan spesifikasi properti
   • Perbandingan harga properti

Features

• Advanced Search Algorithms

  • TF-IDF (Term Frequency-Inverse Document Frequency)
  • Cosine Similarity
  • Jaccard Similarity

• Text Processing

  • Stemming using Sastrawi (Indonesian language)
  • Stopword removal
  • Case folding
  • Punctuation and number removal

• Search Results

  • Relevance-based ranking
  • Content preview with query highlighting
  • Pagination support
  • Source website favicon display

Technical Stack

• Backend: Go (Golang)
• Web Framework: Gin
• Template Engine: Go HTML Templates
• Text Processing: Go-Sastrawi
• Data Storage: JSON

Project Structure

.
├── articles.json         # Indexed articles data
├── main.go               # Main application entry point
├── search.go             # Search engine implementation
├── static/               # Static assets (images, favicon)
└── templates/            # HTML templates
    ├── 404.html
    ├── document.html
    └── index.html
    └── results.html

Key Components

1. Search Engine

   • Inverted index construction
   • TF-IDF score calculation
   • Vector space model implementation
   • Multiple similarity measures

2. Text Processing Pipeline

   • Text cleaning and normalization
   • Tokenization
   • Stopword removal
   • Stemming for Indonesian language

3. Web Interface

   • Clean and responsive design
   • Real-time search results
   • Article preview with highlighted matches
   • Pagination for large result sets

Running the Application

1. Make sure you have Go installed on your system
2. Clone the repository
3. Install dependencies:

   go mod download

4. Run the application:

   go run main.go

5. Access the application at http://localhost:8080

Search Methods

The application supports two search methods:

1. Cosine Similarity (Default)

   • Measures the cosine of the angle between two vectors
   • Better for documents of different lengths
   • More precise for content similarity

2. Jaccard Similarity

   • Measures similarity based on the intersection over union
   • Good for quick similarity approximations
   • Useful for comparing document sets

Performance Features

• Thread-safe search engine implementation
• Efficient inverted index structure
• Optimized content preview generation
• Fast search response times
• Memory-efficient data structures

License

This project is part of an academic assignment at Universitas Syiah Kuala.