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- W2269896892 abstract "Data quality is fundamentally important to ensure the reliability of data for stakeholders to make decisions. In real world applications, such as scientific exploration of extreme environments, it is unrealistic to require raw data collected to be perfect. As data miners, when it is infeasible to physically know the why and the how in order to clean up the data, we propose to seek the intrinsic structure of the signal to identify the common factors of multivariate data. Using our new data driven learning method, the common-factor data cleaning approach, we address an interdisciplinary challenge on multivariate data cleaning when complex external impacts appear to interfere with multiple data measurements. Existing data analyses typically process one signal measurement at a time without considering the associations among all signals. We analyze all signal measurements simultaneously to find the hidden common factors that drive all measurements to vary together, but not as a result of the true data measurements. We use common factors to reduce the variations in the data without changing the base mean level of the data to avoid altering the physical meaning." @default.
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- W2269896892 date "2015-12-31" @default.
- W2269896892 modified "2023-09-27" @default.
- W2269896892 title "A Common-Factor Approach for Multivariate Data Cleaning with an Application to Mars Phoenix Mission Data" @default.
- W2269896892 hasPublicationYear "2015" @default.
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