First, we downloaded several Gene Expression Omnibus (GEO) datasets and combined them into a meta-GEO dataset. 
Gene Expression Omnibus
The least absolute shrinkage selection operator regression and support vector machine-recursive feature elimination were used to select the best signs to construct a PCOS diagnostic model. 
least absolute shrinkage selection operator regression
The least absolute shrinkage selection operator regression and support vector machine-recursive feature elimination were used to select the best signs to construct a PCOS diagnostic model. 
support vector machine-recursive feature elimination