Classification learning curves tool


Ing. Zoltán Galáž, Ing. Jiří Mekyska, prof. Ing. Zdeněk Smékal, CSc.

Date of creation: 7. 4. 2017


It is possible to download software here.

Publication to be cited

MEKYSKA, J.; FAÚNDEZ ZANUY, M.; MŽOUREK, Z.; GALÁŽ, Z.; SMÉKAL, Z.; ROSENBLUM, S. Identification and Rating of Developmental Dysgraphia by Handwriting Analysis. IEEE Transactions on Human-Machine Systems, 2016, roč. PP, č. 99, s. 1-14. ISSN: 2168-2291.

GALÁŽ, Z.; MEKYSKA, J.; MŽOUREK, Z.; SMÉKAL, Z.; REKTOROVÁ, I.; ELIÁŠOVÁ, I.; KOŠŤÁLOVÁ, M.; MRAČKOVÁ, M.; BERANKOVA, D. Prosodic Analysis of Neutral, Stress-modified and Rhymed Speech in Patients with Parkinson’ s Disease. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE, 2016, č. 1, s. 1-17. ISSN: 0169-2607.


In the field of biomedical signal processing (e.g. pathological speech signal processing), often it is necessary to use binary classification. For this purpose, the researchers nowadays use multiple sophisticated classification techniques. Classification grid search tool (CLCT) provides an easy and fast way to plot so-called learning curves to visualize if we deal with the high-bias or high-variance problem and consequently adjust the following analysis setup.

Software SGCT provides the 6 possible classification techniques: Support Vector Machines (SVM), Naive Bayes Networks (NBN), Linear Discriminant Analysis (LDA), k-Nearest Neighbour (kNN), Classification Trees (RF) and Gaussian Mixture Models (GMM). It also provides 18 metrics evaluating the quality of classification process: Classification Accuracy (ACC), sensitivity (SEN), specificity (SPE), Matthew’s Correlation Coefficient (MCC), etc. The CGST software is written in the MATLAB programming environment. The testing scripts can be used to test the functionality of the software.


This work was supported by projects AZV 16-30805A and LO1401. The described research was performed in laboratories supported by the SIX project; the registration number CZ.1.05/2.1.00/03.0072, the operational program Research and Development for Innovation.


To negotiate the license terms of use of this software please contact the responsible person Ing. Lukas Novak at Technology Transfer Office, Brno University of Technology, Kounicova 966/67a, Veveří, 60200, Brno, Czech Republic,