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In predictive analytics and machine learning, concept drift means that the statistical properties of the target variable, which the model is trying to predict, change over time in unforeseen ways. This causes problems because the predictions become less accurate as time passes. The term concept refers to the quantity to be predicted. More generally, it can also refer to other phenomena of interest besides the target concept, such as an input, but, in the context of concept drift, the term commonly refers to the target variable.

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  • Concept Drift (de)
  • Concept drift (en)
  • Dérive conceptuelle (fr)
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  • Concept Drift oder data drift bedeutet im Bereich der prädiktiven Analysen und des Maschinellen Lernens, dass sich die statistischen Eigenschaften der Zielvariable, die ein Modell vorherzusagen versucht, im Laufe der Zeit unvorhergesehen ändern. Das führt dazu, dass die Vorhersagen, die dieses Modell trifft, im Laufe der Zeit ungenauer werden. Der Term Concept Drift bezieht sich grundlegend auf das Phänomen einer sich ändernden Zielvariable, wird aber auch für zeitabhängige Änderungen von Eingabedaten, die sich gleichwohl auf Vorhersageergebnisse auswirken, verwendet. (de)
  • In predictive analytics and machine learning, concept drift means that the statistical properties of the target variable, which the model is trying to predict, change over time in unforeseen ways. This causes problems because the predictions become less accurate as time passes. The term concept refers to the quantity to be predicted. More generally, it can also refer to other phenomena of interest besides the target concept, such as an input, but, in the context of concept drift, the term commonly refers to the target variable. (en)
  • En analyse prédictive et en apprentissage automatique, on parle de dérive conceptuelle lorsque les propriétés statistiques de la variable cible, que le modèle essaie de prédire, évoluent au cours du temps d'une manière imprévue. Ceci pose des problèmes parce que les prédictions deviennent moins exactes au fur et à mesure que le temps passe. La notion de Concept se réfère à la mesure que l'on veut prédire. Plus généralement, il peut faire référence à d'autres phénomènes intéressants en dehors des concepts cibles, tels que les entrées. La dérive conceptuelle est une des contraintes en fouille de flux de données. (fr)
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