title: Multilingual text spam detection
body: <p>Many technologies can be used to detect spam in a specific language, and if proper technology is adopted, it can make a system be able to detect spams in multiple languages, but this requires a single text be in a specific language.</p>
  
  <p>So my question is how to detect a text that composed of multiple languages? this is not only about language detection. I'd like to know some best practices to do multilingual text spam detection.</p>