From: Jamie Lokier <jamie@shareable.org>
To: Piet Delaney <piet@www.piet.net>
Cc: George Anzinger <george@mvista.com>,
Clayton Weaver <cgweav@email.com>,
linux-kernel@vger.kernel.org
Subject: Re: Circular Convolution scheduler
Date: Tue, 14 Oct 2003 10:46:55 +0100 [thread overview]
Message-ID: <20031014094655.GC24812@mail.shareable.org> (raw)
In-Reply-To: <1066120643.25020.121.camel@www.piet.net>
Piet Delaney wrote:
> circular convolution is used with the Fast Fourier Transform.
> The frequency data goes from -N/2 ...0 ,,,, +N/2,
> multiplying in the frequency domain is the same as
> convolving in the time or space domain. The result of multiplying
> a time series by say a filter is the same as convolving it
> with the FFT of the filter. Both domains wrap around with the
> FFT, so the normal convolution associated with the Fourier
> transform is replace with the circular convolution.
>
> Many prediction algorithms are based on digital signal processing.
> The Kalman filter for example was used by Harvey for forecasting
> financial markets. The kernel likely has lots of time series that
> could be used for system identification for predicting how to best
> use system resources.
Ok, but what is "circular convolution scheduling"?
-- Jamie
next prev parent reply other threads:[~2003-10-14 9:49 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-06 16:17 Circular Convolution scheduler Clayton Weaver
2003-10-07 22:19 ` George Anzinger
2003-10-14 8:37 ` Piet Delaney
2003-10-14 9:46 ` Jamie Lokier [this message]
2003-10-14 10:06 ` Nick Piggin
2003-10-14 10:18 ` Jamie Lokier
2003-10-14 10:28 ` Nick Piggin
2003-10-16 8:34 ` Piet Delaney
2003-10-16 9:03 ` Nick Piggin
2003-10-21 18:09 ` bill davidsen
-- strict thread matches above, loose matches on Subject: below --
2003-10-07 20:47 Clayton Weaver
2003-10-16 1:51 Clayton Weaver
2003-10-21 18:44 ` bill davidsen
2003-10-21 20:15 ` Richard B. Johnson
2003-10-21 20:54 ` bill davidsen
2003-10-19 8:50 Clayton Weaver
2003-10-21 18:51 ` bill davidsen
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