The hardware and bandwidth for this mirror is donated by dogado GmbH, the Webhosting and Full Service-Cloud Provider. Check out our Wordpress Tutorial.
If you wish to report a bug, or if you are interested in having us mirror your free-software or open-source project, please feel free to contact us at mirror[@]dogado.de.

Semblance: A Data-Driven Similarity Kernel on Probability Spaces

We present a rank-based Mercer kernel to compute a pair-wise similarity metric corresponding to informative representation of data. We tailor the development of a kernel to encode our prior knowledge about the data distribution over a probability space. The philosophical concept behind our construction is that objects whose feature values fall on the extreme of that feature’s probability mass distribution are more similar to each other, than objects whose feature values lie closer to the mean. Semblance emphasizes features whose values lie far away from the mean of their probability distribution. The kernel relies on properties empirically determined from the data and does not assume an underlying distribution. The use of feature ranks on a probability space ensures that Semblance is computational efficacious, robust to outliers, and statistically stable, thus making it widely applicable algorithm for pattern analysis. The output from the kernel is a square, symmetric matrix that gives proximity values between pairs of observations.

Version: 1.1.0
Imports: fields (≥ 9.6), PerformanceAnalytics (≥ 1.5.2), DescTools (≥ 0.99.26), msos (≥ 1.1.0)
Suggests: kernlab
Published: 2019-01-25
DOI: 10.32614/CRAN.package.Semblance
Author: Divyansh Agarwal Nancy R. Zhang
Maintainer: Divyansh Agarwal <divyansh at upenn.edu>
License: GPL-2
NeedsCompilation: no
CRAN checks: Semblance results

Documentation:

Reference manual: Semblance.pdf

Downloads:

Package source: Semblance_1.1.0.tar.gz
Windows binaries: r-devel: Semblance_1.1.0.zip, r-release: Semblance_1.1.0.zip, r-oldrel: Semblance_1.1.0.zip
macOS binaries: r-release (arm64): Semblance_1.1.0.tgz, r-oldrel (arm64): Semblance_1.1.0.tgz, r-release (x86_64): Semblance_1.1.0.tgz, r-oldrel (x86_64): Semblance_1.1.0.tgz
Old sources: Semblance archive

Linking:

Please use the canonical form https://CRAN.R-project.org/package=Semblance to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
Health stats visible at Monitor.