proxy-groups:
- name: Smart Group
  type: smart
  # policy-priority: <1 means lower priority, >1 means higher priority, the default is 1
  policy-priority: "Premium:0.9;SG:1.3" 
  # uselightgbm: use LightGBM model predict weight
  uselightgbm: false
  # collectdata: collect datas for model training
  collectdata: false
  # strategy: 'sticky-sessions' or 'round-robin', not support 'consistent-hashing'
  # the default is 'sticky-sessions' with more stable&smoothly nodes switch logic when datas collecting
  strategy: sticky-sessions
  ...