Does tensorflow have something similar to scikit learn\'s one hot encoder for processing categorical data? Would using a placeholder of tf.string behave as categorical data
There's embedding_ops in Scikit Flow and examples that deal with categorical variables, etc.
If you just begin to learn TensorFlow, I would suggest you trying out examples in TensorFlow/skflow first and then once you are more familiar with TensorFlow it would be fairly easy for you to insert TensorFlow code to build a custom model you want (there are also examples for this).
Hope those examples for images and text understanding could get you started and let us know if you encounter any issues! (post issues or tag skflow in SO).