Information processing system, information processing method, and program
The information processing system addresses peak overlap in X-ray analysis by optimizing non-negative matrix factorization with specified bases, ensuring stable and efficient decomposition of X-ray measurement data.
JP2025160549APending Publication Date: 2025-10-23RIGAKU CORP
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Patent Information
- Application Number
- JP2024063109
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-10-23
AI Technical Summary
Technical Problem
Existing non-negative matrix factorization techniques struggle to provide stable analysis results when X-ray measurement results exhibit peak overlap.
Method used
An information processing system that includes a processor configured to perform non-negative matrix factorization with a specified objective function, setting variable and fixed bases based on reference data to reduce the search range and optimize the factorization process.
Benefits of technology
The system achieves stable and accurate analysis results even with overlapping X-ray peaks by reducing processing load and enhancing the efficiency of non-negative matrix factorization.
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Abstract
To provide an information processing system configured to obtain a highly accurate analysis result even for significant overlap of spectra originating from components.SOLUTION: An acquisition step A6 acquires target measurement data indicating a result of measurement using an X ray for a sample to be analyzed, and at least one piece of reference data. A designation receiving step A7 receives a designation of the reference data. A setting step A9 sets an objective function for executing non-negative matrix factorization, including a linear combination of at least one variable basis and at least one fixed basis, based on the designation. Each fixed basis corresponds to the designated reference data. The components of the variable basis are set to be variable parameters in the non-negative matrix factorization. The components of the fixed basis are set to be fixed parameters in the non-negative matrix factorization.SELECTED DRAWING: Figure 4
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