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Jean-Michel ROGER received his rural engineer degree in 1990 and his PhD in 1995. Since the 90s he has been conducting research in near infrared spectrometry and in chemometrics. His constant concern is to produce simple and operational solutions to implement NIRS to the problems related to the environment and the agriculture. To make the embedded sensors operational, he initially studied the calibration robustness problems. Together with Tom Fearn he thus promoted orthogonalization methods. These methods are now used in practical applications, as calibration transfer or moisture effect correction in NIR based soil characterization. He also studied the variable selection techniques, dedicated to the specific case of NIRS, which allowed him to develop NIR sensors for the agriculture. In 2016 he received the Tomas Hirschfeld Award from the International Committee of NIR spectroscopy. In 2018, he created the chemometrics research pole ChemHouse, which promotes education, research and cooperation about NIRS and chemometrics (http://chemproject.org).

Krzysztof B. Bec obtained his doctorate (2014) in physical and theoretical chemistry from the University of Wroclaw. His research focused on thin-film IR spectroscopy and computational methods. He worked with Professor Yukihiro Ozaki as Postdoctoral Fellow and Research Assistant Professor at Kwansei Gakuin University, Japan; he focused on advancing near-infrared (NIR) spectroscopy and contributed into development of ATR-FUV-DUV spectroscopy and its applications. He continues his work in the field of NIR spectroscopy as FWF Lise Meitner Senior Fellow and Principal Investigator in the group of Professor Christian W. Huck at the University of Innsbruck, Austria. His current research interest focuses on the applications of quantum mechanical methods and artificial intelligence methods in NIR spectroscopy.

Alexandre Mallet currently works for BioEnTech, a company specialized in bioprocess monitoring, including anaerobic digestion. He is pursuing his PhD with the French National Institute for Agriculture, Food, and Environment (INRAE) in two different laboratories: the joint research unit of Information, Technology, and Agro-Processes (UMR ITAP) at Montpellier, and the Laboratory of Environmental Biotechnology (LBE) at Narbonne. His research activities are focused on the effects of water on near infrared spectroscopy, and on the development of robust calibrations on complex matter by means of chemometrics.