rails g simple_form:install --bootstrap
rails g model item title:string & rake db:migrate
rails g model user name:string & rake db:migrate
rails g model rating user:references item:references score:float & rake db:migrate
rails g model similarity subject:references object:references value:float & rake db:migrate
change DB's schema
add seeds for check collaborative filtering
add calculation similarities task
add calculation predictions task
rails g model feature item:references name:string content:text & rake db:migrate
add nnct syllabus parser
ignore syllabus pdfs
add instruction#index and exit, index as root
add user's sign up action
add session feature
add users#new and create's specs
add items#index
add items#show
add items#rating
change project name