New fusion frameworks including explicit weighting functions for the remaining useful life prognostics

•An integrated fusion framework based on Gaussian process regression and IOWA operators has been introduced for assessing the remaining useful life;•The combination procedure is built upon three weighting schemes including exponential, logarithmic and inverse functions;•Extensive numerical simulations have been conducted with respect to various configurations;•Outcomes of the proposed techniques have been evaluated with respect to the standard IOWA method and some related works in terms of error and computation time figures of merit.