Knowledge Transfer and Semi-supervised Learning

Semi-supervised Learning in Image Collections

This project focuses on graph-based semi-supervised learning for object recognition. We explore different algorithms and their dependency on the underlying graph structure given by different image descriptors and distance measures. We provide several unsupervised and supervised graph improvement, e.g., metric learning or dimensionality reduction. Finally, we propose a novel active learning framework RALF that make use of reinforcement learning to find a dataset-independent and good labeling.

Large-Scale Knowledge Transfer

We explore knowledge transfer and sharing in a large scale classification setting. We compare hierarchical, attribute-based, and direct transfer with one-vs-all learning.

Semantic Relatedness for Knowledge Transfer

To enable large knowledge transfer from known to unkown image classes we tab into different linguistic knowledge bases such as Wikipedia and the WWW. We examine attribute-based and direct transfer methods for transferring knowledge.