A method for clustering data or objects in an array, each element of the array corresponding to a similarity between the objects implemented within a computer linked with a database containing the data or objects The method includes determining a number of classes of objects based on values of the relationships computed between an object and a previously established class, for each class found, determining the value of each of the relationships between a class and the other classes, and merging certain classes, and taking each object of each class one by one, determining the value of the relationship of each object with each of the classes other than the class into which the object was initially classed, if the value of the relationship is greater then transferring the object to the new class, this is continued until all the values of the relationships are negative.