Korbicz, Józef (1951- ) - red. ; Uciński, Dariusz - red.
Two types of heuristic estimators based on Parzen kernels are presented. They are able to estimate the regression function in an incremental manner. The estimators apply two techniques commonly used in concept-drifting data streams, i.e., the forgetting factor and the sliding window. The methods are applicable for models in which both the function and the noise variance change over time. Although nonparametric methods based on Parzen kernels were previously successfully applied in the literature to online regression function estimation, the problem of estimating the variance of noise was generally neglected. ; It is sometimes of profound interest to know the variance of the signal considered, e.g., in economics, but it can also be used for determining confidence intervals in the estimation of the regression function, as well as while evaluating the goodness of fit and in controlling the amount of smoothing. The present paper addresses this issue. Specifically, variance estimators are proposed which are able to deal with concept drifting data by applying a sliding window and a forgetting factor, respectively. A number of conducted numerical experiments proved that the proposed methods perform satisfactorily well in estimating both the regression function and the variance of the noise.
Zielona Góra: Uniwersytet Zielonogórski
AMCS, volume 28, number 3 (2018) ; kliknij tutaj, żeby przejść
Biblioteka Uniwersytetu Zielonogórskiego
14 lip 2025
9 lip 2025
13
https://zbc.uz.zgora.pl/repozytorium/publication/100869
| Nazwa wydania | Data |
|---|---|
| Regression function and noise variance tracking methods for data streams with concept drift | 14 lip 2025 |
Stefanowski, Jerzy Krawiec, Krzysztof Wrembel, Robert Stefanowski, Jerzy - ed. Krawiec, Krzysztof - ed. Wrembel, Robert - ed.
Shaker, Ammar Hüllermeier, Eyke Korbicz, Józef (1951- ) - red. Kowal, Marek - red.
Khémiri, Karim Ben Hmida, Fayçal Ragot, José Gossa, Moncef Korbicz, Józef (1951- ) - red. Uciński, Dariusz - red.
Merino, Javier Antón
Rafajłowicz, Ewaryst (1953- ) Pawlak, Mirosław Steland, Angsar Kummert, Anton - ed. Rafajłowicz, Ewaryst - ed.
Mzyk, Grzegorz Korbicz, Józef (1951- ) - red.
Simiński, Krzysztof Korbicz, Józef (1951- ) - red. Uciński, Dariusz - red.
Chen, Gang Yang, Zhong-Zhen Abaev, Pavel - ed. Razumchik, Rostislav - ed. Kołodziej, Joanna - ed.