1. A method for regression from interval target values, comprising: reading training data comprising an interval output; estimating an initial model; assigning representative values for the interval output of the training data using the initial model; estimating a regression model using the representative values for the interval output of the training data; determining whether the regression model converges; iterating the step of assigning representative values for the interval output and iterating the step of estimating the regression model using the representative values for the interval output, in response to the regression model not converging; and outputting the regression model, in response to the regression model converging.