Title
Phi-Delta-Diagrams: Software Implementation Of A Visual Tool For Assessing Classifier And Feature Performance
Abstract
In this article, a two-tiered 2D tool is described, called <phi,delta > diagrams, and this tool has been devised to support the assessment of classifiers in terms of accuracy and bias. In their standard versions, these diagrams provide information, as the underlying data were in fact balanced. Their generalization, i.e., ability to account for the imbalance, will be also briefly described. In either case, the isometrics of accuracy and bias are immediately evident therein, as-according to a specific design choice-they are in fact straight lines parallel to the x-axis and y-axis, respectively. <phi,delta > diagrams can also be used to assess the importance of features, as highly discriminant ones are immediately evident therein. In this paper, a comprehensive introduction on how to adopt <phi,delta > diagrams as a standard tool for classifier and feature assessment is given. In particular, with the goal of illustrating all relevant details from a pragmatic perspective, their implementation and usage as Python and R packages will be described.
Year
DOI
Venue
2019
10.3390/make1010007
MACHINE LEARNING AND KNOWLEDGE EXTRACTION
Keywords
DocType
Volume
feature importance, classifier performance measures, confusion matrices, ROC curves, R-package, Python package
Journal
1
Issue
Citations 
PageRank 
1
0
0.34
References 
Authors
11
5
Name
Order
Citations
PageRank
Giuliano Armano132542.89
Alessandro Giuliani217025.21
Ursula Neumann300.34
Nikolas Rothe400.34
Dominik Heider500.34