{"id":4705,"date":"2026-08-13T14:51:29","date_gmt":"2026-08-13T12:51:29","guid":{"rendered":"https:\/\/ellistat.com\/?post_type=guide-dutilisateur&#038;p=4705"},"modified":"2026-08-13T14:51:29","modified_gmt":"2026-08-13T12:51:29","slug":"messages-and-special-cases-7","status":"publish","type":"guide-dutilisateur","link":"https:\/\/ellistat.com\/en\/guide-dutilisateur\/messages-et-cas-particuliers-7\/","title":{"rendered":"Messages and Special Cases"},"content":{"rendered":"<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Location<\/strong><\/td><td><strong>Cause and Solution<\/strong><\/td><\/tr><\/thead><tbody><tr><td>\u00abSelect a template\u00bb<\/td><td>There are no templates in the project. Clicking the \u00ab+\u00bb creates one.<\/td><\/tr><tr><td>The X box in a column is disabled<\/td><td>A constant column, or one with a repetition factor greater than 1. A column with no variation has no measurable effect.<\/td><\/tr><tr><td>The Gaussian process does not appear in the types<\/td><td>An \"X\" is qualitative, or the grid has more than 50 rows.<\/td><\/tr><tr><td>The K-OPLS regression does not appear<\/td><td>The table is too large (more than 2,000 values in the selected columns).<\/td><\/tr><tr><td>The X and Y have been removed from the model<\/td><td>The model grid has been changed: the selection has been reset.<\/td><\/tr><tr><td>Excellent R\u00b2, but test lines were poorly predicted<\/td><td>Overfitting. Simplify the model or revert to the default settings.<\/td><\/tr><tr><td>\u00abNo terms in the model\u00bb<\/td><td>Check the terms in the selector on the left.<\/td><\/tr><tr><td>High VIFs across multiple terms<\/td><td>Redundant factors: The coefficients are not separable. Remove a term, or expand the experimental design.<\/td><\/tr><tr><td>The optimum lies on a boundary of the domain<\/td><td>The true optimum is probably beyond that. Expand the range through further testing; do not extrapolate.<\/td><\/tr><tr><td>\u00abThe model requires at least 4 measured trials.\u00bb<\/td><td>Enter the results of the initial tests.<\/td><\/tr><tr><td>\u00abFirst, enter the pending test results\u00bb<\/td><td>A lot that has been offered has not yet been measured.<\/td><\/tr><tr><td>\u00abAt least two measured trials are required\u00bb (convergence)<\/td><td>This is normal at the beginning of the study.<\/td><\/tr><tr><td>\u00abA response surface requires at least two factors.\u00bb<\/td><td>The map requires two factors; the 5D graph requires four.<\/td><\/tr><tr><td>Coverage below 95 % at diagnosis<\/td><td>The model underestimates its uncertainty: increase the expected noise or add more tests.<\/td><\/tr><tr><td>High Noise Warning<\/td><td>Check the repeatability of the measurement before continuing.<\/td><\/tr><tr><td>Sum of proportions not equal to 1 (mixture)<\/td><td>Edit the essay, or use the auto-correct feature.<\/td><\/tr><tr><td>Infeasible mixing terminals<\/td><td>The minimums add up to more than 1, or the maximums add up to less than 1. Review the bounds.<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"featured_media":0,"menu_order":60,"template":"","meta":{"_acf_changed":true},"menu-guide-dutilisateur":[32],"class_list":["post-4705","guide-dutilisateur","type-guide-dutilisateur","status-publish","hentry","menu-guide-dutilisateur-8-ml-machine-learning"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Messages et cas particuliers - Ellistat<\/title>\n<meta name=\"description\" content=\"Messages d&#039;erreurs et cas particuliers pour le module Machine Learning de Ellistat Data Analysis.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ellistat.com\/en\/users-guide\/messages-and-special-cases-7\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Messages et cas particuliers - 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