Data Technologies and Applications 

 - Emerald 
 - Quarterly 
 - Vol 54 No. 2, 2020 
<br/><br/> The discrete Fourier transformation (DFT) has been proven to be a successful method for<br/>determining whether a discrete time series is seasonal and, if so, for detecting the period. This paper deals<br/>exclusively with rare data, in which instances occur periodically at a low frequency 
<br/><br/><label>ISSN: </label>2514-9288 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rare data--Discrete data
<br/><br/><label>LC Class. No.: </label>https://www.emerald.com/insight/publication/issn/2514-9288/vol/54/iss/2