Forecasting (13): Holt's trend method forecast (double exponential smoothing)

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  • เผยแพร่เมื่อ 9 มี.ค. 2020
  • →Forecasting course: researchhub.org/course/foreca...
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    This video explains the concept of Holt's trend method for forecasting and demonstrates an example using excel.
    #holtTrend #trend #forecasting #researchHUB #excel
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    Published paper using forecasting methods:
    (1) ARIMA and NNAR: www.mdpi.com/1911-8074/12/2/103
    (2) ARIMA, VAR and ANN: doi.org/10.1057/s41278-020-00...
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ความคิดเห็น • 26

  • @uwenolte8578
    @uwenolte8578 4 ปีที่แล้ว +3

    Thanks very much for the great example. The only one I had found alread. Just one point. I do not get it, why you input the value for the forecast yt+1 for period march 1996 into cell I7 instead of I6. By including the time parameter t+1 it is already clear, that the forecast is for the next period. Any you also want to make sure, that the forecast for march 1996 is made in february 1996. By putting it into a cell below, you waste one forecast at the end. Also I did use the software xlstat and it also did it one cell above.

  • @freedomqwaszx1872
    @freedomqwaszx1872 3 ปีที่แล้ว +2

    it's easy to understand at the beginning, but starting from 11'15" I got lost. Why just simply put 1 to 6 to calculate future forecast, any explanation or theory behind that?

  • @marcinkoczot2059
    @marcinkoczot2059 9 หลายเดือนก่อน

    Amazing video! Thank you

  • @jussirihto2351
    @jussirihto2351 4 ปีที่แล้ว +3

    very helpful again, cheers!

  • @thagoonlprusiriyodlpru4174
    @thagoonlprusiriyodlpru4174 2 ปีที่แล้ว +1

    thank you so much

  • @arinasabilarosyida7115
    @arinasabilarosyida7115 2 หลายเดือนก่อน

    so, how to forecast for the next period? example Jan 2000

  • @AjitKumarSahi
    @AjitKumarSahi หลายเดือนก่อน

    can i get ppt used and excel sheet computation done

  • @navketan1965
    @navketan1965 ปีที่แล้ว

    Sir, If I am doing double exponential smoothing 5 period moving average with a software program--after 5 period exponential moving average is calculated say (X) does computer do second calculation with data X and (X-t1) (X-t2) (X-t3) (X-t4)- - - - forgive me,I went to college 50 years ago..(X-t1) is exponential moving average one period prior & so on.

  • @joonamikkola7800
    @joonamikkola7800 4 ปีที่แล้ว +2

    Thanks for a great lecture!

    • @RESEARCHHUB
      @RESEARCHHUB  4 ปีที่แล้ว

      Glad you enjoyed it!

  • @pskaratzas6788
    @pskaratzas6788 2 ปีที่แล้ว +1

    Great videos and very helpful! Which forecast methods do we use when we have seasonality??

    • @RESEARCHHUB
      @RESEARCHHUB  2 ปีที่แล้ว +1

      holt-winters, see th-cam.com/video/uLHOfewK9wc/w-d-xo.html

  • @mewalkwithyou7475
    @mewalkwithyou7475 3 ปีที่แล้ว +1

    thankyou but what if the last Tt's value is negative?
    I tried to forecast using holt but because of negative Tt's value my forecast value is decreasing.

    • @RESEARCHHUB
      @RESEARCHHUB  3 ปีที่แล้ว

      have you tried any other method for example HW or regression? maybe HT is not the most appropriate method for your data?

  • @abhinayrec
    @abhinayrec 4 ปีที่แล้ว +1

    What is out sample forecast? Why July didn't use June values?

    • @RESEARCHHUB
      @RESEARCHHUB  4 ปีที่แล้ว

      Please see th-cam.com/video/16IKsLlZClY/w-d-xo.html

  • @likhitanalam8395
    @likhitanalam8395 2 หลายเดือนก่อน

    Thankyou for the explanation, what if forecasts comes negative and how could we verify whether this model for our data is correct or not?

    • @RESEARCHHUB
      @RESEARCHHUB  2 หลายเดือนก่อน

      What kind of data are you forecasting?

  • @upamanyudixit8298
    @upamanyudixit8298 5 หลายเดือนก่อน

    Can you increase the Volume please.

  • @TerryBowl
    @TerryBowl 10 หลายเดือนก่อน

    Acadamic grade!

  • @durgasthan
    @durgasthan 3 ปีที่แล้ว +1

    The problem with that is the Forecast Horizon calculation where to get Forecast for future you are just multiplying with forecast horizon number

    • @RESEARCHHUB
      @RESEARCHHUB  3 ปีที่แล้ว

      This is not a problem at all. There are different approaches to forecasting, and this is one of them.

    • @user-wh4ke3rd5u
      @user-wh4ke3rd5u ปีที่แล้ว

      @@RESEARCHHUB I have a question: In double exponential smoothing, the sum of alpha and beta must= one, or not necessary?

  • @manishv9816
    @manishv9816 ปีที่แล้ว

    0:20 TT hahahahaa

  • @jamiesmandarin9792
    @jamiesmandarin9792 3 ปีที่แล้ว +3

    This is confusing, more background knowledge please and use a typing instead of writing pen, can't read.