OplsEdit

Could you clarify what you mean by "Opls"? The term isn’t unique and can refer to different things. The most common possibilities are:

• OPLS (Orthogonal Projections to Latent Structures), a chemometrics method used in multivariate statistics and data analysis.
• A proper noun (an organization, project, or brand) named “Opls.”

If you confirm which meaning you intend, I can write a full encyclopedia-style article in Markdown, with the requested tone and structure. If you meant the chemometrics method, I’ll keep the piece neutral and provide technical explanation and notable debates around its use. If it’s something else, please provide a bit more context.