Schlieper, P.* ; Dombrowski, M.* ; Nguyen, A.* ; Zanca, D.* ; Eskofier, B.M.
     
    
        
Data-centric benchmarking of neural network architectures for the univariate time series forecasting task.
    
    
        
    
    
        
        Forecasting 6, 718-747 (2024)
    
    
    
      
      
	
	    Time series forecasting has witnessed a rapid proliferation of novel neural network approaches in recent times. However, performances in terms of benchmarking results are generally not consistent, and it is complicated to determine in which cases one approach fits better than another. Therefore, we propose adopting a data-centric perspective for benchmarking neural network architectures on time series forecasting by generating ad hoc synthetic datasets. In particular, we combine sinusoidal functions to synthesize univariate time series data for multi-input-multi-output prediction tasks. We compare the most popular architectures for time series, namely long short-term memory (LSTM) networks, convolutional neural networks (CNNs), and transformers, and directly connect their performance with different controlled data characteristics, such as the sequence length, noise and frequency, and delay length. Our findings suggest that transformers are the best architecture for dealing with different delay lengths. In contrast, for different noise and frequency levels and different sequence lengths, LSTM is the best-performing architecture by a significant amount. Based on our insights, we derive recommendations which allow machine learning (ML) practitioners to decide which architecture to apply, given the dataset’s characteristics.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Data Synthesis ; Deep Learning ; Model Selection ; Neural Networks ; Time Series ; Univariate Forecasting
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2024
    
 
    
        Prepublished in Year
        0
    
 
    
        HGF-reported in Year
        2024
    
 
    
    
        ISSN (print) / ISBN
        2571-9394
    
 
    
        e-ISSN
        2571-9394
    
 
    
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	    Volume: 6,  
	    Issue: 3,  
	    Pages: 718-747 
	    Article Number: ,  
	    Supplement: ,  
	
    
 
    
        
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            Publisher
            MDPI
        
 
        
            Publishing Place
            St Alban-anlage 66, Ch-4052 Basel, Switzerland
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
    
        Institute(s)
        Institute of AI for Health (AIH)
    
 
    
        POF-Topic(s)
        30205 - Bioengineering and Digital Health
    
 
    
        Research field(s)
        Enabling and Novel Technologies
    
 
    
        PSP Element(s)
        G-540008-001
    
 
    
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        Erfassungsdatum
        2024-10-04