支持向量机文件格式描述
description of SVM file format
- Shokan Iliyas 问题:
- 我有一个支持向量机格式的数据集。有一个简单的行：
-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
- 有人能描述一下这个文件吗？如何阅读此格式？非常感谢。
- 回答:
- Prune - vote: 1
- 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.
- 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
- Prune - vote: 1
