An effective assessment of cluster tendency through sampling based multi-viewpoints visual method
نویسندگان
چکیده
منابع مشابه
Parallel Visual Assessment of Cluster Tendency on GPU
Determining the number of clusters in a data set is a critical issue in cluster analysis. The Visual Assessment of (cluster) Tendency (VAT) algorithm is an effective tool for investigating cluster tendency, which produces an intuitive image of matrix as the representation of complex data sets. However, VAT can be computationally expensive for large data sets due to its O N2 ð Þ time complexity....
متن کاملVATdt: Visual Assessment of Cluster Tendency Using Diagonal Tracing
The visual assessment of tendency (VAT) technique, for visually finding the number of meaningful clusters in data, developed by J. C. Bezdek, R. J. Hathaway and J. M. Huband, is very useful, but there is room for improvements. Instead of displaying the ordered dissimilarity matrix (ODM) as a 2D gray-level image for human interpretation as is done by VAT, we trace the changes in dissimilarities ...
متن کاملiVAT and aVAT: Enhanced Visual Analysis for Cluster Tendency Assessment
Given a pairwise dissimilarity matrix D of a set of n objects, visual methods (such as VAT) for cluster tendency assessment generally represent D as an n × n image I(D̃) where the objects are reordered to reveal hidden cluster structure as dark blocks along the diagonal of the image. A major limitation of such methods is the inability to highlight cluster structure in I(D̃) when D contains highly...
متن کاملAn Efficient Visual Analysis Method for Cluster Tendency Evaluation, Data Partitioning and Internal Cluster Validation
Visual methods have been extensively studied and performed in cluster data analysis. Given a pairwise dissimilarity matrix D of a set of n objects, visual methods such as Enhanced-Visual Assessment Tendency (E-VAT) algorithm generally represent D as an n × n image I(D) where the objects are reordered to expose the hidden cluster structure as dark blocks along the diagonal of the image. A major ...
متن کاملDesign and fabrication of an effective micromixer through passive method
Micromixer is a significant component of microfluidics particularly in lab-on-chip applications so that there has been a growing need for design and fabrication of micromixers with a shorter length and higher efficiency. Despite most of the passive micromixers that suffer from long mixing path and complicated geometry to increase the efficiency, our novel design suggests a highly efficient micr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Ambient Intelligence and Humanized Computing
سال: 2021
ISSN: 1868-5137,1868-5145
DOI: 10.1007/s12652-020-02710-8