Mean squared error of prediction

{
  "id": "MLC-T-CHM-007080",
  "term": "Mean squared error of prediction",
  "field": "Chemistry",
  "definition": "A statistical metric that quantifies the average squared difference between predicted values from a model and the true values for a set of independent test data. It assesses the model's ability to predict new, unseen data, providing an indication of its generalization performance. This error is a key indicator of a model's predictive accuracy in chemometrics.",
  "synonyms": [
    "mean squared error of estimation"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "evaluation data",
    "multivariate calibration",
    "root mean squared error of prediction"
  ],
  "references": [
    "PAC, 2016, 88, 407. 'Vocabulary of concepts and terms in chemometrics (IUPAC Recommendations 2016)' on page 421 (https://doi.org/10.1515/pac-2015-0605)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/mean-squared-error-of-prediction/"
}