Microchip Manufacturing Plant Production Floor Optimization (MMPPFO) problem dataset

Optimization problem starts with initial wafer-lot production schedule and new die request. To solve the problem, wafer-lot schedule has to be altered to support all demand. Schedule can be altered by changing individual wafer-lot schedule in three major ways: pull-in, push-out, and offload. Pull-in wafer-lot means to produce the wafer-lot earlier. Push-out means to produce the wafer-lot later. Offload means to produce the wafer-lot in another fab. All wafer-lot schedule alterations must comply with existing constraints. Wafer production is a complex process in a microchip manufacturing plant. Each fab can produce limited quantity of wafers in selected time window. The time window is one Week. With known or predicted future die demand it is possible to create wafer-lot production schedule that maximizes the efficiency of fabs and supports all the requested demand. Moreover, it is desired to support this new demand while having the lowest number of changes to the schedule possible.The dataset has been heuristically generated using the preservation of dynamics of real data.<br><br> <br>

本优化问题以初始晶圆批次（wafer-lot）生产计划与新增裸片（die）需求为起始条件。为求解该问题，需调整晶圆批次生产计划以覆盖全部需求。计划调整可通过三种主要方式变更单一批次的生产安排：提前投产（pull-in）、延后投产（push-out）与转产（offload）。其中，pull-in指将该晶圆批次的生产时间提前，push-out指将其生产时间延后，offload指将该批次晶圆转移至其他晶圆厂（Fab）生产。所有晶圆批次的计划调整均需符合现有约束条件。

晶圆生产是芯片制造厂内的复杂流程，每家晶圆厂（Fab）仅可在选定的时间窗口内生产有限数量的晶圆，该时间窗口时长为一周。基于已知或预测的未来裸片（die）需求，可制定晶圆批次生产计划，以最大化晶圆厂（Fab）的生产效率并满足所有提出的需求。此外，在满足新增需求的同时，应尽可能减少对原有生产计划的调整次数。

本数据集通过保留真实数据的动态特性，采用启发式方法生成。