Steffen Koch


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Visualisation and Exploration of High-Dimensional Distributional Features in Lexical Semantic Classification
Maximilian Köper | Melanie Zaiß | Qi Han | Steffen Koch | Sabine Schulte im Walde
Proceedings of the Tenth International Conference on Language Resources and Evaluation (LREC'16)

Vector space models and distributional information are widely used in NLP. The models typically rely on complex, high-dimensional objects. We present an interactive visualisation tool to explore salient lexical-semantic features of high-dimensional word objects and word similarities. Most visualisation tools provide only one low-dimensional map of the underlying data, so they are not capable of retaining the local and the global structure. We overcome this limitation by providing an additional trust-view to obtain a more realistic picture of the actual object distances. Additional tool options include the reference to a gold standard classification, the reference to a cluster analysis as well as listing the most salient (common) features for a selected subset of the words.


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FeatureForge: A Novel Tool for Visually Supported Feature Engineering and Corpus Revision
Florian Heimerl | Charles Jochim | Steffen Koch | Thomas Ertl
Proceedings of COLING 2012: Posters