Hi team I m using the cross validation function and it seems Nixtla Community #timegpt

Hi team, I'm using the cross validation function ...

Vidar Ingason

10/18/2024, 1:06 PM

Hi team, I'm using the cross validation function and it seems that the cutoff point is incorrect. I have monthly data but the cutoff seems to be in seconds:

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> nixtla_client_cross_validation(
+     df = timegpt_tbl,
+     h  = 3,
+     n_windows = 5)
Frequency chosen: M
   unique_id         ds              cutoff       y TimeGPT
1      <tel:000122023-07-01|00012 2023-07-01> 1970-01-01 05:25:09 4691367 4763307
2      <tel:000122023-08-01|00012 2023-08-01> 1970-01-01 05:25:09 4632109 4660824
3      <tel:000122023-09-01|00012 2023-09-01> 1970-01-01 05:25:09 3925616 4002058
4      <tel:000122023-10-01|00012 2023-10-01> 1970-01-01 05:26:41 3282128 3235828
5      <tel:000122023-11-01|00012 2023-11-01> 1970-01-01 05:26:41 2579690 2739404
6      <tel:000122023-12-01|00012 2023-12-01> 1970-01-01 05:26:41 2446004 2606284

Marco

10/18/2024, 2:17 PM

Using the Python or R SDK?

Vidar Ingason

10/18/2024, 2:18 PM

✅ 1

Marco

10/18/2024, 2:20 PM

@Mariana Menchero, can you take a look? I haven't worked on the R SDK!

Mariana Menchero

10/18/2024, 4:23 PM

thanks @Marco let me take a look

🙌 1

Mariana Menchero

10/18/2024, 10:27 PM

Hi @Vidar Ingason are you using the

as.Date()

function? If yes, can you try with

as.POSIXct()

instead or leave the ds column as characters?

Mariana Menchero

10/19/2024, 12:16 AM

We just pushed a one line of code change that should fix this issue. However, if you have some time, please let us know if you were using the

as.Date()

function. I believe that was the problem, but would like confirmation to prevent further issues. Regards.

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