Query regarding negative values

[sharathkumaranbu]

In the training and testing dataset, values for most of the numerical columns like duration, src_bytes etc.. are negative. What does that signify ? How duration and bytes could be negative ?

[anupam.jain]

Hi

It is normalized dataset and we are using below formula to normalize it, due to which values are negative

normalized = (featurei − μi) / σi

Here, "μ" is Mean and "σ"​ is Standard Deviation

[kalyanischakravarthi]

Hello sharath,

Please go through below post for more details. It is duplicate question.

Need clarification of the input data schema

Regards
Kalyan