From outliers to prototypes : Ordering data
- We propose simple and fast methods based on nearest neighbors that order objects from high-dimensional data sets from typical points to untypical points. On the one hand, we show that these easy-to-compute orderings allow us to detect outliers (i.e. very untypical points) with a performance comparable to or better than other often much more sophisticated methods. On the other hand, we show how to use these orderings to detect prototypes (very typical points) which facilitate exploratory data analysis algorithms such as noisy nonlinear dimensionality reduction and clustering. Comprehensive experiments demonstrate the validity of our approach.
| Author details: | Stefan Harmeling, Guido Dornhege, David Tax, Frank C. Meinecke, Klaus-Robert Müller |
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| URL: | http://www.sciencedirect.com/science/journal/09252312 |
| DOI: | https://doi.org/10.1016/j.neucom.2005.05.015 |
| ISSN: | 0925-2312 |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2006 |
| Publication year: | 2006 |
| Release date: | 2017/03/25 |
| Source: | Neurocomputing. - ISSN 0925-2312. - 69 (2006), 13-15, S. 1608 - 1618 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Informatik und Computational Science |
| Peer review: | Referiert |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Informatik |
