CODEWITHSUNDEEP
libsvmsvm
Hossein
Hossein

Reputation: 41831

Is order of features in LibSVM feature vectors important?

I am considering using LibSVM and I am creating the required feature vectors. In almost all the example data there is an order for the features for example:

+1 1:3 2:1 3:5 4:2 10:8

Was wondering if this ordering is important, for example:

+1 4:2 10:8 2:1 1:3 3:5

Thanks

Upvotes: 5

Views: 667

Answers (1)

Fluchtpunkt
Fluchtpunkt

Reputation: 447

Although both of your notations are equivalent, LibSVM requires the Feature-IDs to be sorted ascendingly - I suppose this has I/O-reasons.

Upvotes: 6

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