...Order Picking and Multi-Skilled Picker Scheduling in Omni...
The mixed-integer linear programming model is formulated as below: Minimize 𝑇𝑡Minimize Tt (1) Subject to ∑𝑏∈𝐵𝑋𝑖𝑏=1∑b∈BXib=1 (2) ∑𝑖∈𝑏∑𝑚∈𝑀𝑞𝑖𝑚𝑋𝑖𝑏≤𝑄∑i∈b∑m∈MqimXib≤Q (3) 𝑇𝑡=∑𝑖∈𝑂𝑇𝑡𝑖Tt=∑i∈OTit...