Publications by authors named "Celine Pascale"
This publication revises the deteriorated performance of field calibrated low-cost sensor systems after spatial and temporal relocation, which is often reported for air quality monitoring devices that use machine learning models as part of their software to compensate for cross-sensitivities or interferences with environmental parameters. The cause of this relocation problem and its relationship to the chosen algorithm is elucidated using published experimental data in combination with techniques from data science. Thus, the origin is traced back to insufficient sampling of data that is used for calibration followed by the incorporation of bias into models.
View Article and Find Full Text PDFArticle Synopsis
- VOCs are important indicators in various fields, including climate change, indoor air quality, food safety, and health, but current measurement methods are complex and costly due to the need for standard solutions.
- The paper introduces portable generators for producing trace-level VOC gas standards, which simplify calibration of VOC detectors and eliminate the need for pre-prepared calibration standards in cylinders.
- Two devices developed by national metrology institutes (INRIM and METAS) use different technologies to generate reference gas mixtures in a precise and efficient manner for practical lab applications.