Evaluation and ranking of manufacturing line non-numeric information
AssigneeInternational Business Machines Corporation
InventorsJerome M. Kurtzberg, Menachem Levanoni
Life of this patent
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AssigneeInternational Business Machines Corporation
InventorsJerome M. Kurtzberg, Menachem Levanoni
Estimating the term…
An apparatus and method for quantitatively ranking the performance of each attribute contributing to a manufacturing process. Various signals representing the measure (i.e., quality or yield) of a manufacturing run and representing the attributes that contributed to each manufacturing run are recorded. An iterative process is commenced whereby numeric weights are assigned to each attribute. In a first iterative step, the weight of each attribute is determined to be the weighted average of the measure of each manufacturing run to which that attribute contributed. In subsequent iteration steps, a refined weight for each attribute is determined by computing the ratio between the normalized measure and the product of all other weights associated with that manufacturing run. The iterations are continued until the weights determined for each attribute converge or become self consistent. In this manner, the performance of non-numeric or attribute parameters such as operators and tools can be measured and defined in terms of a numeric quantity.
A method for optimizing a manufacturing line the manufacturing line having a plurality of non-numeric attributes, comprising the steps of:
A system for quantitatively determining the performance of a plurality of non-numeric attributes of a manufacturing line comprising:
A method for quantitatively determining the performance of a plurality of non-numeric attributes of a manufacturing line, comprising the steps of:
A system for quantitatively determining the performance of a plurality of non-numeric attributes of a manufacturing line, comprising:
Dependencies are inferred from the claim text.