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svm-scale returns an empty feature file in case of a single instance #178
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it's correct. This means the instance is scaled to the zero vector
…On 2021-09-20 17:49, MTawfik wrote:
Hello, I did train a 3 classes model using RBF kernel with 13 features
and 1104 instances which is attached as "Full_Train.txt [1]" and when
scaled between -1 and 1 it succeeds but it scales on the y-axis
"Full_Train_scaled.txt [2]". And when I scale a file with a single
detection or instance during deployment "Classify.txt [3]" it returns
an empty feature file with only the label left "Classify_scale.txt
[4]".
The command I'm using
./svm-scale -l -1 -u 1 Classify.txt>Classify_scale.txt
If you can please tell me if I'm doing something wrong or how to scale
over the feature array and produce a scaled single instance file.
Thanks in Advance.
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Links:
------
[1] https://github.com/cjlin1/libsvm/files/7194722/Full_Train.txt
[2]
https://github.com/cjlin1/libsvm/files/7194784/Full_Train_scaled.txt
[3] https://github.com/cjlin1/libsvm/files/7194805/Classify.txt
[4] https://github.com/cjlin1/libsvm/files/7194813/Classify_scale.txt
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Well, when I scale a group of instances together, they produce the scaled values not equal to zero vector, but when I scale only one instance of them alone, the scaled values are zero vector, so why is this happening? |
If the input is a set with many instances we can calculate max/min of
each feature.. But this isn't the case for a single instance
…On 2021-09-20 18:38, MTawfik wrote:
Well, when I scale a group of instances together, they produce the
scaled values not equal to zero vector, but when I scale only one
instance of them alone, the scaled values are zero vector, so why is
this happening?
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Ok Thanks for your help. |
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Hello, I did train a 3 classes model using RBF kernel with 13 features and 1104 instances which is attached as "Full_Train.txt" and when scaled between -1 and 1 it succeeds but it scales on the y-axis "Full_Train_scaled.txt". And when I scale a file with a single detection or instance during deployment "Classify.txt" it returns an empty feature file with only the label left "Classify_scale.txt".
The command I'm using
If you can please tell me if I'm doing something wrong or how to scale over the feature array and produce a scaled single instance file.
Thanks in Advance.
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