Interactive Knowledge-Based Kernel PCA
Interactive Knowledge-Based Kernel PCA
复制标题
交互式基于知识的核PCA
DOI:
10.1007/978-3-662-44851-9_32
复制
发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Thomas Gärtner
中科院分区:
文献类型:
--
作者:
Dino Oglic;Daniel Paurat;Thomas Gärtner
Data understanding is an iterative process in which domain experts combine their knowledge with the data at hand to explore and confirm hypotheses. One important set of tools for exploring hypotheses about data are visualizations. Often, however, traditional, unsupervised dimensionality reduction algorithms are used for visualization. These tools allow for interaction, i.e., exploring different visualizations, only by means of manipulating some technical parameters of the algorithm. Therefore, instead of being able to intuitively interact with the visualization, domain experts have to learn and argue about these technical parameters. In this paper we propose a knowledge-based kernel PCA approach that allows for intuitive interaction with data visualizations. Each embedding direction is given by a non-convex quadratic optimization problem over an ellipsoid and has a globally optimal solution in the kernel feature space. A solution can be found in polynomial time using the algorithm presented in this paper. To facilitate direct feedback, i.e., updating the whole embedding with a sufficiently high frame-rate during interaction, we reduce the computational complexity further by incremental up- and down-dating. Our empirical evaluation demonstrates the flexibility and utility of this approach.
影响因子:
3.7
作者:
Leman SC;House L;Maiti D;Endert A;North C
通讯作者:
North C
DOI:
--
发表时间:
2010
期刊:
arXiv.org
影响因子:
--
作者:
Christian J. Walder;Ricardo Henao;Morten Mørup;L. K. Hansen
通讯作者:
L. K. Hansen
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
Daniel Paurat;Dino Oglic;Thomas Gärtner
通讯作者:
Thomas Gärtner