Model Optimization Using Zeta Statistic for Input Parameter Significance

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Solution Overview

Problem

Conventional simulation techniques fail to effectively guide optimization processes for mathematical models by not utilizing interrelationships among input parameters and between input parameters and outputs, and they struggle to identify input variations that have little impact on output variations, leading to inefficient optimization and result representation.

Innovation Solution

A method and system that utilize a zeta statistic to determine desired distributions of input parameters, specifying search ranges, and simulating models to find significant levels of interaction between input and output parameters, employing a genetic algorithm to optimize input parameters based on the zeta statistic and presenting significance levels, which includes obtaining distribution descriptions, simulating models, and determining desired distributions and significance levels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional simulation techniques (Monte Carlo or Latin Hypercube) are used to produce expected output distribution, then the optimization process can proceed with known input distributions, but the techniques fail to guide optimization using interrelationships among input parameters and between input parameters and outputs

Engineering Contradiction:
Improveoptimization guidanceVSAvoidinterrelationships among parameters
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The system implements feedback by calculating significance levels that quantify the relationship between input parameters and outputs, then using this information to guide the optimization process. The significance levels provide continuous feedback about which parameters matter most, allowing the optimization to focus on relevant parameters while accounting for interrelationships.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent introduces significance levels as an intermediary metric that mediates between the complex interrelationships of multiple parameters and the optimization process. This intermediary translates the complex parameter interactions into actionable guidance, enabling the optimization to utilize interrelationship information without being overwhelmed by complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If conventional techniques are used for optimization, then the process can proceed with standard input variations, but they fail to identify opportunities to increase input variation that has little or no impact on output variations

Engineering Contradiction:
Improveinput variation flexibilityVSAvoidoutput impact detection
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system changes parameters by introducing significance levels that measure the impact of each input parameter on outputs. This allows the optimization process to identify parameters with low significance levels (little impact on outputs) and safely increase their variation, thereby improving adaptability without compromising output quality.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If conventional techniques are used, then the optimization process can run without detailed parameter analysis, but they fail to represent the optimization process and results effectively and efficiently to users

Engineering Contradiction:
Improveoptimization efficiencyVSAvoidparameter significance information
Core Design Contradiction:
ProductivityVSLoss of information

Solution Approach 1:

The patent extracts key information by calculating and presenting significance levels for each input parameter. This extraction isolates the most important parameter relationships and presents them clearly to users, maintaining optimization efficiency while preventing loss of critical information about parameter importance and interrelationships.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS8364610B2Process modeling and optimization method and system
Publication Date: 2013.01.29 CATERPILLAR INC
  • US8364610B2 patent drawing
  • US8364610B2 patent drawing
  • US8364610B2 patent drawing

AI summary

A method is provided for model optimization. The method may include obtaining respective distribution descriptions of a plurality of input parameters to a model indicative of interrelationships between the input parameters and one or more output parameters. The method may also include specifying respective search ranges for the plurality of input parameters and simulating the model to determine a desired set of input parameters based on a zeta statistic of the model. Further, the method may include determining respective desired distributions of the input parameters based on the desired set of input parameters; determining significance levels of the input parameters in interacting with the output parameter based on the simulation and the desired distributions of the input parameters; and presenting the significance levels.