bulk service
type: Concept
broader: improved Markovian model
preferred label: سرویس گروهی @fa

Erlang model
type: Concept
broader: improved Markovian model
preferred label: مدل ارلانگی @fa

bulk arrival
type: Concept
broader: improved Markovian model
preferred label: ورودی گروهی @fa

improved Markovian model
type: Concept
broader: queuing model
narrower: bulk service
narrower: bulk arrival
narrower: Erlang model
preferred label: مدل مارکوفی پیشرفته @fa

queuing model
type: Concept
narrower: improved Markovian model
preferred label: مدل صف‌بندی @fa