[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Scatter/gather pattern [was: New XPipe Presentation Availa
At 00:45 22/02/2002 -0500, Thomas B. Passin wrote: >What is probably the best known application of a scatter-gather pattern >occurs, not in markup, not in software engineering, but in physics (or >electrical engineering depending on how you look at things). I'm referring >to the famous Fast Fourier Transform. The FFT lets you analyze the >frequency content of a waveform in time O[n log n) instead of O[n^2], which >a straightforward approach (the Discrete Fourier Transform) needs, where n >is the number of points in the waveform. > >The art is in decomposing the problem and putting it back together, and I'm >sure that remains a constant over the span of scatter-gather solutions. Yes. >Conversely, scatter-gather won't be worth the effort unless it yields >similar savings. Experience with Scatter/Gather in XML processing has shown that the benefits are well worth the effort more often than not. Any developer who has chucked an XSLT/DOM solution in favour of a SAX/Lexical solution because of memory constraints should consider Scatter/Gather rather than a rewrite. The challenge for XPipe is to make the application of the scatter/gather pattern a no-brainer. We are working on that bit. (And also actively seeking discussion on the idea of document fulcra and how best to find these animals in XML corpora.) Sean
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