hello ,
i have question about detect seasonality i...

# generalm

marah othman

06/14/2023, 3:01 PMhello ,
i have question about detect seasonality in time series is there any method to know if i have seasonality in my data without plotting and graph ? i mean somthing static
thank you

f

fede (nixtla) (they/them)

06/14/2023, 3:10 PMHi **@marah othman**! Here’s a discussion on the topic. In particular, the image attached. You can calculate the strength of the seasonality using the tsfeatures library and computing the

`stl_features`

function.m

marah othman

06/14/2023, 11:33 PMare you using in neuralforcast library this feature to train the models ?

s

Sapna Mishra

06/16/2023, 5:26 PMb

Bartosz Bohaterewicz

06/20/2023, 8:37 AMACF, sort by descending and look at the second coefficient

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marah othman

06/20/2023, 8:45 AMthe second coefficient you mean the second lag ? and could explain why the second coefficient ?

b

Bartosz Bohaterewicz

06/20/2023, 10:00 AMbecause ACF starts at lag of 0 (first) which will always equal to 1 due to the fact that you are correlating TS with itself.
In addition you can look at the index higher than 6 in case of daily data (weekly) and apply custom r-value threshold

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marah othman

06/20/2023, 10:11 AMmu data is hourly so you told me to see the second and now you told me see the 6 so i am little confuse

b

Bartosz Bohaterewicz

06/20/2023, 10:32 AMwhat kind of seasonal lag are you expecting to see in your dataset?

m

marah othman

06/20/2023, 12:31 PMhow can determine this ?

marah othman

06/20/2023, 12:38 PMmy seasonality each 6 days or even every day i am really not very sure because it different when i take the frequency for 1 hour or for one day or five day

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