A method of predicting an operation anomaly of one or several equipment of an assembly, said method comprising the following steps: - taking an assembly, having at least one operating cycle, and comprising one or several series of equipment comprising at least a first and a second equipment both operating in parallel, and in substantially the same manner, each equipment comprising a first operating parameter or at least a first, second and third operating parameter, each parameter evolving over time in a similar manner between said first and said second device, - recording and storing measurements over time of said first or said second parameters for said first and second equipment, for one or several operating cycles, or one or several parts of said cycle(s), - collecting said measurements during, or after the completion of, the one or several operating cycles, or one or several parts of said cycle(s), - processing said collected measurements, for detecting a possible malfunction of said first and/or said second equipment, by establishing a first coefficient of determination between the measurements of the first parameters of said first equipment and the measurements of the first parameters of said second equipment, - if, for one or several operating cycles, or one or several parts of said cycle(s), said first coefficient of determination is below a first determined threshold, emitting a notification indicating the malfunction of said first and/or second equipment and/or triggering additional steps of the method and, preferably, if said first coefficient of determination is greater than or equal to said first threshold, emitting a notification indicating an absence of malfunction of said first and/or second equipment and/or adjusting said first threshold as a function of said first coefficient of determination. - taking an assembly, having at least one operating cycle, and comprising one or several series of equipment comprising at least a first and a second equipment both operating in parallel, and in substantially the same manner, each equipment comprising a first operating parameter or at least a first, second and third operating parameter, each parameter evolving over time in a similar manner between said first and said second device, - recording and storing measurements over time of said first or said second parameters for said first and second equipment, for one or several operating cycles, or one or several parts of said cycle(s), - collecting said measurements during, or after the completion of, the one or several operating cycles, or one or several parts of said cycle(s), - processing said collected measurements, for detecting a possible malfunction of said first and/or said second equipment, by establishing a first coefficient of determination between the measurements of the first parameters of said first equipment and the measurements of the first parameters of said second equipment, - if, for one or several operating cycles, or one or several parts of said cycle(s), said first coefficient of determination is below a first determined threshold, emitting a notification indicating the malfunction of said first and/or second equipment and/or triggering additional steps of the method and, preferably, if said first coefficient of determination is greater than or equal to said first threshold, emitting a notification indicating an absence of malfunction of said first and/or second equipment and/or adjusting said first threshold as a function of said first coefficient of determination. <EOS>