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CM-Spade/PrefixSpan do not identify frequent sequence with major support
Posted by: saiph
Date: July 05, 2017 09:16AM

Hello,

I have the following sequence database: https://paste.ee/p/DLVu3

It is clear that

9002910008 -1 9003360008 -1 9009590008 -1 9008310008 -1 9008090008 -1 9003400008 -1 9008230008 -1 9006600008 -1 9001510008 -1

is a frequent sequence, with high support.

When I try to run CM-Spade or PrefixSpan, either with 0.1 or 0.5 minsup, I get no output.

Why?

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Re: CM-Spade/PrefixSpan do not identify frequent sequence with major support
Posted by: saiph
Date: July 05, 2017 10:17AM

OK, It seems that I cannot have items as numbers of 10 digits (max seems to be 9).

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Re: CM-Spade/PrefixSpan do not identify frequent sequence with major support
Date: July 05, 2017 07:22PM

Yes, items are encoded as integers. Normally in Java an integer is signed and on 32 bits, which means no values greater than 2,147,483,647 are accepted.

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