PolsTrack

A Politician Opinion Tracking Website

• Displays the views of politicians on various topics
• Compares politicians’ views on specific issues
• Shows the most popular politicians and issues recently

Website URL: https://polstrack.com

Table of Contents

• Technologies
• Architecture
• Database Schema
• Data Pipeline
• Main Features
• Demonstration
  • Home page
  • News page
  • Compare page
  • Hots page
• Contact

Technologies

Backend

• Node.js / Express.js
• RESTful API
• NGINX

Front-End

• HTML
• CSS
• JavaScript
• EJS
• AJAX

Cloud Service (AWS)

• Compute: EC2
• Storage: S3
• Database: RDS
• Network: CloudFront, ELB

Database

• MySQL
• Redis (Cache)

Tools

• Version Control: Git, GitHub
• CI / CD: Jenkins, Docker
• Test: Jest, Artillery
• Agile: Trello (Scrum)

Others

• Design Pattern: MVC, DAO
• NLP: Jieba, NLP.js
• Web Crawler: cheerio

Architecture

• Redirects 443 port requests by NGINX after receiving request from clients
• Scraped news content through Web Crawler
• Segmented news content by Jieba and verified news with politicians' intention by NLP.js
• Optimized data loading efficiency through in-memory cache mechanism by Redis

Database Schema

Data Pipeline

• Content Segmentation
  • 『國民黨立委江啟臣今天就任國民黨主席，他以「世代合作、內造化、數位化」三大方向發表演說，但全文未提「九二共識」，加上中共總書記習近平也未循例拍發賀電，引發矚目。』 → 「國民黨」、「立委」、「江啟臣」、「黨主席」、「九二共識」、「中共」、「總書記」、「習近平」
• Title Intention Analysis
  • 『江啟臣就職國民黨主席 致詞未提九二共識』 → 人物對特定議題表達立場
• Get Specific Tag
  • 「國民黨」、「江啟臣」、「九二共識」、「習近平」

Main Features

• Categorize news
  • Displays the views of politicians on various topics
• Opinion Compare
  • Compares politicians' views on specific issues
• Most popular
  • Shows the most popular politicians and issues recently

Demonstration

Home page

• Shows politicians and issues by popularity

News page

• Displays the views of politicians on various topics

Compare page

• Compares politicians’ views on specific issues

Hots page

• Shows the most popular politicians and issues recently

Contact

Email: yopahsu@gmail.com