I am in need of someone to create a content text classifier. I would like to automatically classify content of Ads into categories, such as Apparel->Clothing->Women or Vehicles->Cars->SUV. I can live with a set of categories like the ones defined by a standard out there. I am looking for something like a subset of ebay or Google categories. You need to have a lot of experience in machine learning because you have to be careful that the model you create doesn't overfit. I don't have the datasets so you'll have to find some good ones and probably large ones too.