CODEWITHSUNDEEP
machine-learninglibsvmdataformat
Shokan Iliyas
Shokan Iliyas

Reputation: 41

description of SVM file format

I have a data set that is on SVM format. There is simple of one row:

-1 4:0.0788382 5:0.124138 6:0.117647 11:0.428571 16:0.1 17:0.749633 18:0.843029 19:0.197344 21:0.142856 22:0.142857 23:0.142857 28:1 33:0.0555556 41:0.1 54:1 56:1 64:1 70:1 72:1 74:1 76:1 82:1 84:1 86:1 88:1 90:1 92:1 94:1 96:1 1

Could somebody give a description of this file pls? How to read this format? Thank you!

Upvotes: 0

Views: 1869

Answers (1)

Prune
Prune

Reputation: 77847

This isn't specific to SVM; it's a generic columnar format. The first entry (-1 in this example) is the label for the observation. The other entries are pairs of feature_number : value entries.

In your given observation, the label (classification) is -1 (likely "bad event"). The first four features (0-3) have no value. Features 4-6 have the indicated values; 7-10 are missing. This continues through the end of the line. I'm not sure what the trailing 1 value means; this syntax is new to me.

Upvotes: 1

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