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MFF  

Meta Fuzzy Functions
View on CRAN: Click here


Download and install MFF package within the R console
Install from CRAN:
install.packages("MFF")

Install from Github:
library("remotes")
install_github("cran/MFF")

Install by package version:
library("remotes")
install_version("MFF", "0.1.0")



Attach the package and use:
library("MFF")
Maintained by
Nihat Tak
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2026-02-13
Latest Update: 2026-02-13
Description:
Implements Meta Fuzzy Functions (MFFs) for regression Tak and Ucan (2026) <doi:10.1016/j.asoc.2026.114592> by aggregating predictions from multiple base learners using membership weights learned in the prediction space of validation set. The package supports fuzzy and crisp meta-ensemble structures via Fuzzy C-Means (FCM) Tak (2018) <doi:10.1016/j.asoc.2018.08.009>, Possibilistic FCM (PFCM) Tak (2021) <doi:10.1016/j.ins.2021.01.024>, and k-means, and provides a workflow to (i) generate validation/test prediction matrices from common regression learners (linear and penalized regression via 'glmnet', random forests, gradient boosting with 'xgboost' and 'lightgbm'), (ii) fit cluster-wise meta fuzzy functions and compute membership-based weights, (iii) tune clustering-related hyperparameters (number of clusters/functions, fuzziness exponent, possibilistic regularization) via grid search on validation loss, and (iv) predict on new/test prediction matrices and evaluate performance using standard regression metrics (MAE, RMSE, MAPE, SMAPE, MSE, MedAE). This enables flexible, interpretable ensemble regression where different base models contribute to different meta components according to learned memberships.
How to cite:
Nihat Tak (2026). MFF: Meta Fuzzy Functions. R package version 0.1.0, https://cran.r-project.org/web/packages/MFF. Accessed 15 Mar. 2026.
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