# train link
POST /parse/link
params:
  link: the link of the page
  category: the category of the link
  
# train title
POST /parse/title
params:
  title: the title of the page
  category: the category of the link

# understand link
POST /understand/link
params:
  link: the link of the page
return:
  json: {"category":"category"}

# understand
POST /understand/title
params:
  title: the title of the page
return:
  json: {"category":"category"}