Search found 20 matches

by james123
Sun Oct 27, 2013 9:17 am
Forum: Estimation
Topic: how to estimate realized volatility using intraday data
Replies: 10
Views: 18900

Re: how to estimate realized volatility using intraday data

It seems like we need to use "while" or "for" command,

The key problems are two:

1. how to sum up the daily r squart value.
2. how to store the estimated daily realized volatility.
by james123
Sun Oct 27, 2013 8:28 am
Forum: Estimation
Topic: how to estimate realized volatility using intraday data
Replies: 10
Views: 18900

Re: how to estimate realized volatility using intraday data

hi, here is the new version: !start=0 if !start>=0 and !start<500 then series r smpl 1/04/2013+!start 1/04/2013+!start r=log(close)-log(close(-1)) series r2 r2=r*r series v v =@sum(r2) save series volatility !start=!start+1 else !start>=500 endif but the " if cycle" does not work, meanwhil...
by james123
Sun Oct 27, 2013 7:11 am
Forum: Estimation
Topic: how to estimate realized volatility using intraday data
Replies: 10
Views: 18900

Re: how to estimate realized volatility using intraday data

hi, I try to program the realized volatility as the following ( assume these are 500 days need to be estimated): !start=0 if !start>=0 and !start<500, then smpl 1/04/2013+!start 1/04/2013+!start r=log(close)-log(close(-1)) r2=r*r v =sum(r2) save series volatility !start+1 else !start >=500 endif but...
by james123
Sun Oct 27, 2013 5:06 am
Forum: Estimation
Topic: how to estimate realized volatility using intraday data
Replies: 10
Views: 18900

Re: how to estimate realized volatility using intraday data

hi, turbador, Thank you for your reply, but I still think the above program is not fully correct. In order to get realized volatility from daily high frequency data, I think we need to use "if language" to contorl the daily time rolling. The steps to calculate RV are the following: 1: calc...
by james123
Wed Oct 23, 2013 10:39 pm
Forum: Estimation
Topic: how to estimate realized volatility using intraday data
Replies: 10
Views: 18900

Re: how to estimate realized volatility using intraday data

hi, I do not quite understand the floowing Eviews sentence

"series r = nrnd/100" what does this sentence mean?

I attached the data in this reply, can you have a look and help me to estimate the daily realized volatility by using 5 mins interval close price?

thanks a lot
by james123
Wed Oct 23, 2013 7:51 pm
Forum: Estimation
Topic: how to estimate realized volatility using intraday data
Replies: 10
Views: 18900

Re: how to estimate realized volatility using intraday data

thank you trubador.

:D
by james123
Wed May 22, 2013 12:46 pm
Forum: Estimation
Topic: how to estimate realized volatility using intraday data
Replies: 10
Views: 18900

Re: how to estimate realized volatility using intraday data

Hi, can anyone write a code to calculate the following, I attached it in the word document. And this is the fomular to calculate the realized volatility.
by james123
Mon May 13, 2013 11:59 am
Forum: Estimation
Topic: recursive cointegration test
Replies: 0
Views: 2688

recursive cointegration test

Does anyone know how to perform a recursive cointegration test on Eviews 7?
by james123
Sat Apr 13, 2013 4:06 am
Forum: Data Manipulation
Topic: data selection
Replies: 0
Views: 2477

data selection

Hi, currently I have minute to minute stock index futuresans spot return. I want to re-arrange the data. My original data is order as the following format: 4/19/2012 02:31 0.061260 4/19/2012 02:32 0.000000 4/19/2012 02:33 -0.038283 4/19/2012 02:34 -0.030637 ...... But I want to re-rerange it as foll...
by james123
Tue Apr 09, 2013 3:29 am
Forum: Data Manipulation
Topic: average for 5 mins interval
Replies: 11
Views: 11490

Re: average for 5 mins interval

Hi, thank you for these replies. I think we both can not understand each other percisely. :)
But still appreciate you effects to try to help.

Many Thanks
by james123
Mon Apr 08, 2013 4:10 pm
Forum: Data Manipulation
Topic: average for 5 mins interval
Replies: 11
Views: 11490

Re: average for 5 mins interval

Thank you for your reply. Basically, there is no model. I want to test whether the average value of 5 mins interval can generally forecaste the other day's trend of 5 mins interval. According to the intraday periodicity characteristic, there should be a high forecast ability by using average, I gues...
by james123
Mon Apr 08, 2013 12:40 pm
Forum: Data Manipulation
Topic: average for 5 mins interval
Replies: 11
Views: 11490

Re: average for 5 mins interval

Thank you for your helps, and I am wanding how to perform the following: we have already performed to calculate the average for the 5 mins interval. Some averages show positive, and others show negative. Then, suppose we only care about, on average, either the price go up or go down (either positive...
by james123
Mon Apr 08, 2013 11:53 am
Forum: Data Manipulation
Topic: average for 5 mins interval
Replies: 11
Views: 11490

Re: average for 5 mins interval

Thank you so much, the results are the exactly I need. Thank you again. :D
by james123
Mon Apr 08, 2013 11:04 am
Forum: Data Manipulation
Topic: average for 5 mins interval
Replies: 11
Views: 11490

Re: average for 5 mins interval

Sure, and here it is.
by james123
Mon Apr 08, 2013 11:02 am
Forum: Estimation
Topic: MGARCH Diagonal BEKK results & Volatility spillovers
Replies: 20
Views: 45187

Re: MGARCH Diagonal BEKK results & Volatility spillovers

Maybe this is the reason to call the Diagonal BEKK, not the original BEKK. Due to reduce the amount of the coefficients. I guess.

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