The R Package knnwtsim: Nonparametric Forecasting With a Tailored Similarity Measure
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Publication:113617
DOI10.48550/ARXIV.2112.06266arXiv2112.06266MaRDI QIDQ113617
Author name not available (Why is that?)
Publication date: 12 December 2021
Abstract: The R package knnwtsim provides functions to implement k nearest neighbors (KNN) forecasting using a similarity metric tailored to the forecasting problem of predicting future observations of a response series where recent observations, seasonal or periodic patterns, and the values of one or more exogenous predictors all have predictive value in forecasting new response points. This paper will introduce the similarity measure of interest, and the functions in knnwtsim used to calculate, tune, and ultimately utilize it in KNN forecasting. This package may be of particular value in forecasting problems where the functional relationships between response and predictors are non-constant or piece-wise and thus can violate the assumptions of popular alternatives. In addition both real world and simulated time series datasets used in the development and testing of this approach have been made available with the package.
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