Regarding Pharmacophore Mapping in DS 4.1

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Hi all,

I am new to Discovery Stusio 4.1. I am trying to build a pharmacophore model for a training set of 20 inhibitors. How ever I am unable to prdict the cost function of generating the pharamcophore. Do I need to give the IC50 values of the inhibitors to generate this??Can any one please help me out to resolve this.

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