301 citations · 401 across the 8 of their papers we have counts for
8 papers
Augmenting Variational Autoencoders with Sparse Labels: A Unified Framework for Unsupervised, Semi-(un)supervised, and Supervised Learning
Felix Berkhahn, Richard Keys, Wajih Ouertani +2
We present a new flavor of Variational Autoencoder (VAE) that interpolates seamlessly between unsupervised, semi-supervised and fully supervised learning domains. We show that unla…
Entity Embeddings of Categorical Variables
Cheng Guo, Felix Berkhahn
We map categorical variables in a function approximation problem into Euclidean spaces, which are the entity embeddings of the categorical variables. The mapping is learned by a ne…
Microscopic Picture of Non-Relativistic Classicalons
Felix Berkhahn, Sophia Müller, Florian Niedermann +1
A theory of a non-relativistic, complex scalar field with derivatively coupled interaction terms is investigated. This toy model is considered as a prototype of a classicalizing th…
Brane Induced Gravity: From a No-Go to a No-Ghost Theorem
Felix Berkhahn, Stefan Hofmann, Florian Niedermann
Numerous claims in the literature suggest that gravity induced on a higher co-dimensional surface violates unitarity in the weak coupling regime. However, it remained unclear, why…
Island of Stability for Consistent Deformations of Einstein's Gravity
Felix Berkhahn, Dennis Dietrich, Stefan Hofmann +2
We construct explicitly deformations of Einstein's theory of gravity that are consistent and phenomenologically viable since they respect, in particular, cosmological backgrounds.…
Consistency of Relevant Cosmological Deformations on all Scales
Felix Berkhahn, Dennis D. Dietrich, Stefan Hofmann
Using cosmological perturbation theory we show that the most relevant defor- mation of gravity is consistent at the linear level. In particular, we prove the absence of uni- tarity…