we applied the nest video dot and use the evasion it did help in to overcome the called such problem because you cancel some new sound that have never been seen before it will be related to other songs that have been different by the users and the invasion will capture this kind of information and we end up again like we did in the two sigma approach by using five models by flight GPI models and we just use different subsets of features for each model and then we play together all the moments thank you for your