Graphical Fuzzy AHP

Survey Platform with Multi-Modal Response Support

This software platform enables the creation and management of surveys, supporting multiple response modalities. Respondents can choose between:

• A traditional textual format, and
  
• A novel graphical interaction,
  

providing flexibility that enhances user experience and accommodates diverse research needs.

Key Features

• Multi-modal survey design – Support for textual and graphical response formats
  
• Easy deployment – Runs locally or on public web servers with minimal setup
  
• Data export – Built-in tools to export collected responses
  
• Analytical tools – Automatically computes:
  • Preference vectors
  • Consistency ratios
    

These metrics are essential for pairwise comparison-based decision-making frameworks (e.g., AHP).

Configuration

The application requires Docker to be installed. If Docker is not already installed on your system, you can install it by running the following commands (in case of Debian/Ubuntu based systems):

```bash
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt update
sudo apt-cache policy docker-ce
sudo apt install docker-ce
```

After cloning newest version of repository open file from repository /AHP-main/frontend/src/axiosConfig.js and set axios.defaults.baseURL to public address of FastAPI server, protocol (http or https) and port (default port is 8000).

Then from folder /AHP-main run command:

```bash
docker compose up --build
```

Admin access

Initial administrator username is admin and password secret. To alter password use RethinkDB Data Explorer (exposed on 8080 port of server) and bcrypt to create password hash (could be https://bcrypt-generator.com/). Then run query:

```js
r.db('test').table('users').filter({username: 'admin'}).update({password: 'bcrypted_password'})
```

Add user

To add new user to platform provide its name and bcrypted password query:

```js
r.db('test').table('users').insert({username: 'new_username', password: 'bcrypted_password'})
```

Optional HTTPS Support

In production, HTTPS is typically handled at the reverse proxy level, not by Vue or FastAPI directly. For Debian based systems you could use for delegated domain use Nginx with Certbot.

1. Install Certbot (Let's Encrypt):

bash sudo apt install certbot python3-certbot-nginx

1. Set up Nginx config:

Example config: ```nginx server { listen 8000; servername yourdomain.com; location / { proxypass http://localhost:8000; include proxy_params; } }

server { listen 8080; servername yourdomain.com; location / { proxypass http://localhost:8080; include proxy_params; } }

server { listen 443 ssl; server_name yourdomain.com;

   ssl_certificate /etc/letsencrypt/live/yourdomain.com/fullchain.pem;
   ssl_certificate_key /etc/letsencrypt/live/yourdomain.com/privkey.pem;

   location / {
       proxy_pass http://localhost;
       include proxy_params;
   }

} ```

1. Run Certbot: bash sudo certbot --nginx