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Sebastian Land wrote:Hi,there are several things called "weight" in RapidMiner. There is the Object "Attribute Weights" which contains weights per column (=attribute) in a dataset. And there's the special role "weight" for an attribute that means that this attribute expresses the weight or importance of the particular example (= row) of the data set.Greetings, Sebastian
Sebastian Land wrote:Hi,this hasn't anything to do with prior knowledge or something like this. The weight only expresses the importance of a certain example. If one example has a weight of 2 then the result of an analysis will be the same as if the example occurs twice with the same attribute values and a weight of 1.You can use this for example to aggregate your data and keep the relative importance of the aggregated examples. If 10 examples have been aggregated to one row, this row should have a weight of 10 to distinguish it's importance from any row that hasn't been aggregated.Greetings, Sebastian