ARIMA in Python how to Time Assortment Forecasting Piece 2(two) – Datamites Records Science Tasks

Quick simple tutorial on ARIMA time series forecasting in Python. Data : https://drive.google.com/open?id=1ytbaSkksPbdljdkzH4EjC1chGYkJuwZM
Code (jupyter) : https://drive.google.com/open?id=1Z-35uZpDfwVcPXlY-BrdvdnYczAbDkXI

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18 Antworten auf „ARIMA in Python how to Time Assortment Forecasting Piece 2(two) – Datamites Records Science Tasks“

  1. Hello Sir, Can you pls guide how we can write the program to find the pdq combination for minimum AIC value within the logic you provided at video 35:12? so we can increase the range from 0,5 to 0,10 and don't have to look for minimum AIC value manually.

    Thanks and very much appreciate you trainings.

  2. It is a waste model. All those who are happy and excited to see this model, in real world business problem you will never get a model like this which only has continuous variables. No one will take anything from this video.

  3. Why we are passing sales into AR and ARIMA model. What is the fun of making it stationary..?? If we skip those steps then also it will show same thing.. Why have you not taken sale_diff and put it into ARIMA which is a stationary series..??

  4. You 've made a mistake at the searching of AIC. If you see clearly the minimum value of AIC is 290,…. and it corresponds to the combination of (1,2,3). Just for the shake of right evaluation, otherwise your tutorial is really great. Thank you!

  5. It is just predicting the next value , not based on that particular date or time. ?
    Because for training we have taken only the values right ? So how come this prediction help us in the prediction based on particular date or time or moth??? Sir please correct
    And if it’s silly question I’m sorry for asking that

  6. I have an error when i try to fit the ARIMA model saying :"Cannot cast ufunc subtract output from dtype('float64') to dtype('int64') with casting rule 'same_kind'
    " even when i use the exact code mentioned above. Pls Help

  7. How do we un-difference forecasted values of a differenced series in python to make the forecasted values and the test values in the same units? Thanks.

  8. I liked the tutorial a lot but I am not a fan of trying out various values of p and q. You earlier showed that d will be one because 'differencing' it once removed the trend so why later we are using d as 2. And howcome q can take different values. Lags should be somewhat accurate. Isn't it.

  9. I have a data which contains positive and negative values and the difference between them is very huge
    which method can i use that data. If i use Arima model The predicted values are wrong

  10. Good video. I have one question at 10.54 min, Could you please explain If acf plot is quickly decaying positing and negative then how can we say data is stationary ?

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