Now showing items 1-10 of 18
Using grey Holt-Winters model to predict the air quality index for cties in China
The randomness, non-stationarity and irregularity of air quality index series bring the di fficulty of air quality index forecasting. To enhance forecast accuracy, a novel model combining grey accumulated generating technique ...
Relation between China’s gasoline prices and international crude oil prices
(Taylor & Francis, 2016-12-07)
China’s gasoline prices are still regulated by government although China's refined oil pricing mechanism has been reformed for many times. In this paper, proximity and similarity between China’s gasoline prices and Brent ...
Explanation of terms of grey incidence analysis models
Purpose – The purpose of this paper is to present the terms of grey incidence analysis models. Design/methodology/approach –The definitions of basic terms about various grey incidence analysis models are presented one ...
A new method to mitigate data fluctuations for time series prediction
Although the classic exponential-smoothing models and grey prediction models have been widely used in time series forecasting, this paper shows that they are susceptible to fluctuations in samples. A new fractional ...
Grey Number Sequence Forecasting Approach for Interval Analysis: A case of China's Gross Domestic Product Prediction
(Research Information Ltd, 2014)
Uncertainty Representation of Grey Numbers and Grey Sets
In the literature there is a presumption that a grey set and an interval-valued fuzzy set are equivalent. This presumption ignores the existence of discrete components in a grey number. In this paper new measurements ...
A prediction method for plasma concentration by using a nonlinear grey Bernoulli combined model based on a self-memory algorithm
The goal of this work is to present and explore the application of a novel nonlinear grey Bernoulli combined model based on a self-memory algorithm, abbreviated as SA-NGBM, for modeling single-peaked sequences of time ...
Performance evaluation of large commercial aircraft vendors
(Research Information Ltd, 2015)
The Grey system theory and expert investigation method are used to establish evaluation index system for vendor performance at development stage and mass production stage. The weight of each index is ...
Explanation of terms of grey clustering evaluation models
Purpose – The purpose of this paper is to present the terms of grey clustering evaluation models. Design/methodology/approach –The definitions of basic terms about grey clustering evaluation models are presented one ...
Grey Models and Their Roles in Data Analytics
(United Kingdom Simulation Society, 2018-06)
This paper gives an introduction to the basic concepts of grey systems, grey numbers and grey models, and discusses their roles in data analysis of data science. The necessity of small data models is demonstrated, and their ...