Wednesday, May 8, 2013

Sparse matrix multiplication in SQL

This actually could work reasonably well:

image

Source: http://research.microsoft.com/en-us/um/redmond/events/escience2012/Bill_Howe.pdf

Other links:

7 comments:

  1. It worked perfectly, and it's the answer to an assignment question in that very online course. I found this blog by Googling around for a hint, but the answer was in the lecture itself. Now, if only I could understand why this works...

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    Replies
    1. are you talking about data science course ? :)

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    2. Indeed s/he was.

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  2. It's been a great class so far.

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    Replies
    1. Hi KD I haven't yet got the answer right, can you help me ?

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    2. I just saw this post sorry, did you figure it out?

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  3. What public FORTRAN routines would you recommend for a small (5 x 5) sparce matrix ???

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