Search Results for author: Julian Hitschler

Found 6 papers, 1 papers with code

Sparse Stochastic Zeroth-Order Optimization with an Application to Bandit Structured Prediction

no code implementations12 Jun 2018 Artem Sokolov, Julian Hitschler, Mayumi Ohta, Stefan Riezler

Stochastic zeroth-order (SZO), or gradient-free, optimization allows to optimize arbitrary functions by relying only on function evaluations under parameter perturbations, however, the iteration complexity of SZO methods suffers a factor proportional to the dimensionality of the perturbed function.

Structured Prediction

Authorship Attribution with Convolutional Neural Networks and POS-Eliding

no code implementations WS 2017 Julian Hitschler, Esther van den Berg, Ines Rehbein

We use a convolutional neural network to perform authorship identification on a very homogeneous dataset of scientific publications.

Authorship Attribution POS

Multimodal Pivots for Image Caption Translation

no code implementations ACL 2016 Julian Hitschler, Shigehiko Schamoni, Stefan Riezler

We present an approach to improve statistical machine translation of image descriptions by multimodal pivots defined in visual space.

Image Retrieval Machine Translation +2

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