This is not supported in MLlib. Hopefully, we will add support for weighted examples in v1.2. If you want to train weighted instances with the current tree implementation, please try importance sampling first to adjust the weights. For instance, an example with weight 0.3 is sampled with probability 0.3. And if it is sampled, its weight become 1. -Xiangrui
On Tue, Sep 2, 2014 at 1:05 PM, Sameer Tilak <ssti...@live.com> wrote: > Hi everyone, > > > We are looking to apply a weight to each training example; this weight > should be used when computing the penalty of a misclassified example. For > instance, without weighting, each example is penalized 1 point when > evaluating the model of a classifier, such as a decision tree. We would > like to customize this penalty for each training example, such that we could > apply a penalty of W for a misclassified example, where W is a weight > associated with the given training example. > > > Is this something that is supported directly in MLLib? I would appreciate if > someone can point me in right direction. --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
