System and method for automatically determining a set of variables for use in creating a process model
First Claim
1. A computer program embodied on a computer readable medium for implementation on a computer that automatically develops a set of actual model input variables using values for a multiplicity of process input variables and at least one process output variable, comprising the steps of:
- determining a correlation measurement between each of the multiplicity of process input variables and the at least one process output variable;
automatically selecting a set of potential model input variables from the multiplicity of process input variables based on the correlation measurements;
performing a regression analysis on the set of potential model input variables to produce a regression analysis result for the set of potential model input variables; and
choosing the set of potential model input variables as the set of actual model input variables based on the regression analysis result;
wherein the selected set of potential model input variables includes less than all of the multiplicity of process input variables.
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Abstract
A process modeling system and method develop a set of process model inputs for a process model, such as a neural network, from values for a number of process input variables and at least one process output variable. The system and method first determine a correlation measurement between each of the process input variables and the process output variable and select a set of potential model input variables based on the correlation measurements. The system and method then iteratively determine a succession of sets of potential model input variables by performing a regression analysis on the selected set of potential model input variables and the model output variable and by then refining the set of potential model input variables based on the result of the regression analysis and on the correlation measurements. After a number of iterations, the system and method choose a set of potential model input variables as the set of model inputs and develop a process model from the chosen set of model inputs.
217 Citations
27 Claims
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1. A computer program embodied on a computer readable medium for implementation on a computer that automatically develops a set of actual model input variables using values for a multiplicity of process input variables and at least one process output variable, comprising the steps of:
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determining a correlation measurement between each of the multiplicity of process input variables and the at least one process output variable; automatically selecting a set of potential model input variables from the multiplicity of process input variables based on the correlation measurements; performing a regression analysis on the set of potential model input variables to produce a regression analysis result for the set of potential model input variables; and choosing the set of potential model input variables as the set of actual model input variables based on the regression analysis result; wherein the selected set of potential model input variables includes less than all of the multiplicity of process input variables. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 26)
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15. A process modeling system that automatically develops a set of actual model input variables using values for a multiplicity of process input variables and at least one process output variable, comprising:
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a data processor including; a memory for storing the values for the multiplicity of process input variables and at least one process output variable; means for determining a correlation measurement between each of the multiplicity of process input variables and the at least one process output variable; means for selecting a set of potential model input variables from the multiplicity of process input variables; and means for developing the set of actual model input variables from the selected set of potential model input variables including; means for performing a regression analysis on the set of potential model input variables to produce a regression analysis result for the set of potential model input variables; means for automatically creating a new set of potential model input variables; means for providing the new set of potential model input variables to the performing means as the set of potential model input variables; and means for choosing one of the sets of potential model input variables developed by the selecting means or the creating means as the set of actual model input variables based on a selection criterion related to the regression analysis result; wherein one of the selecting means and the creating means develops one of the sets of potential model input variables based on the correlation measurements and wherein at least one of the sets of potential model input variables includes less than all of the multiplicity of process input variables. - View Dependent Claims (16, 17, 18, 19, 20, 27)
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21. A method for implementation by a computer program embodied on a computer readable medium used with a computer for developing a process model from values for each of a multiplicity of process input variables and at least one process output variable, comprising the steps of:
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storing the values for each of the multiplicity of process input variables and the at least one process output variable on a computer readable memory; determining a correlation measurement between each of the multiplicity of process input variables and the process output variable from the stored values; automatically selecting a set of potential model input variables from the multiplicity of process input variables based on the correlation measurements; performing a regression analysis on the set of potential model input variables to produce a regression analysis result for the set of potential model input variables; choosing the set of potential model input variables as a set of actual model input variables based on the regression analysis result; and using the values associated with the chosen set of actual model input variables to produce the process model; wherein the selected set of potential model input variables includes less than all of the multiplicity of process input variables. - View Dependent Claims (22, 23, 24, 25)
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Specification