Apparatus and method thereof for determining a control condition set of a production line

An apparatus for determining a control condition set of a production line, comprising:

• a storage, storing a plurality of historical control condition sets, each of the historical control condition sets comprising a historical yield related value and a plurality of historical control conditions corresponding to a plurality of control factors one-to-one;
• and
• a processor, being electrically connected to the storage and configured to divide the historical control condition sets into a plurality of groups, the historical control conditions corresponding to the same control factor are the same in each of the groups,
• wherein for each group, the processor calculates a measurement of central tendency according to the historical yield related values included in the group,
• wherein the processor decides a subset of the groups and performs the following operations on each of the groups included in the subset:
• (a) calculating a degree of variation of the historical yield related values of the historical control condition sets included in the group, (b) calculating a number regarding different control conditions between the group and a preset control condition set, the preset control condition set comprising a plurality of preset control conditions corresponding to the control factors one-to-one, and (c) calculating a weight score according to the degree of variation, the number regarding different control conditions, and a number of the control factors,
• wherein the processor selects one of the groups included in the subset as a selected group according to the measurements of central tendency and the weight scores and assigns the historical control conditions of the selected group as a plurality of control conditions of the control condition set.