Search Results for author: Evangelos Spiliotis

Found 7 papers, 2 papers with code

Exploring the representativeness of the M5 competition data

no code implementations4 Mar 2021 Evangelos Theodorou, Shengjie Wang, Yanfei Kang, Evangelos Spiliotis, Spyros Makridakis, Vassilios Assimakopoulos

The main objective of the M5 competition, which focused on forecasting the hierarchical unit sales of Walmart, was to evaluate the accuracy and uncertainty of forecasting methods in the field in order to identify best practices and highlight their practical implications.

Marketing Time Series +1

The future of forecasting competitions: Design attributes and principles

no code implementations9 Feb 2021 Spyros Makridakis, Chris Fry, Fotios Petropoulos, Evangelos Spiliotis

Forecasting competitions are the equivalent of laboratory experimentation widely used in physical and life sciences.

Applications

Model selection in reconciling hierarchical time series

1 code implementation21 Oct 2020 Mahdi Abolghasemi, Rob J Hyndman, Evangelos Spiliotis, Christoph Bergmeir

However, when dealing with hierarchical time series, apart from selecting the most appropriate forecasting model, forecasters have also to select a suitable method for reconciling the base forecasts produced for each series to make sure they are coherent.

Model Selection Time Series +1

Hierarchical forecast reconciliation with machine learning

no code implementations3 Jun 2020 Evangelos Spiliotis, Mahdi Abolghasemi, Rob J. Hyndman, Fotios Petropoulos, Vassilios Assimakopoulos

First, the proposed method allows for a non-linear combination of the base forecasts, thus being more general than the linear approaches.

BIG-bench Machine Learning Decision Making

Déjà vu: forecasting with similarity

2 code implementations31 Aug 2019 Yanfei Kang, Evangelos Spiliotis, Fotios Petropoulos, Nikolaos Athiniotis, Feng Li, Vassilios Assimakopoulos

Instead of extrapolating, the future paths of the similar reference series are aggregated and serve as the basis for the forecasts of the target series.

Methodology Applications

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