Co-constructive development of a green chemistry-based model for the assessment of nanoparticles synthesis.

•We propose the synergy of ordinal regression methods for multiple criteria sorting.•We postulate consideration of all maximal sets of consistent assignment examples.•The proposed approach is used to classify the synthesis protocols of silver nanoparticles.•The precise recommendation is judged against robust and stochastic results.•We highlight the mutual learning of the preference model and the decision maker.