feat: adds F1 and roc_auc_score

src/linalg/mod.rs

@@ -22,6 +22,8 @@ pub trait BaseVector<T: FloatExt>: Clone + Debug {
     fn set(&mut self, i: usize, x: T);
 
     fn len(&self) -> usize;
+
+    fn to_vec(&self) -> Vec<T>;
 }
 
 pub trait BaseMatrix<T: FloatExt>: Clone + Debug {

src/linalg/naive/dense_matrix.rs

@@ -27,6 +27,11 @@ impl<T: FloatExt> BaseVector<T> for Vec<T> {
     fn len(&self) -> usize {
         self.len()
     }
+
+    fn to_vec(&self) -> Vec<T> {
+        let v = self.clone();
+        v
+    }
 }
 
 #[derive(Debug, Clone)]

src/linalg/nalgebra_bindings.rs

@@ -22,6 +22,10 @@ impl<T: FloatExt + 'static> BaseVector<T> for MatrixMN<T, U1, Dynamic> {
     fn len(&self) -> usize {
         self.len()
     }
+
+    fn to_vec(&self) -> Vec<T> {
+        self.row(0).iter().map(|v| *v).collect()
+    }
 }
 
 impl<T: FloatExt + Scalar + AddAssign + SubAssign + MulAssign + DivAssign + Sum + 'static>
@@ -384,6 +388,12 @@ mod tests {
         assert_eq!(5., BaseVector::get(&v, 1));
     }
 
+    #[test]
+    fn vec_to_vec() {
+        let v = RowDVector::from_vec(vec![1., 2., 3.]);
+        assert_eq!(vec![1., 2., 3.], v.to_vec());
+    }
+
     #[test]
     fn get_set_dynamic() {
         let mut m = DMatrix::from_row_slice(2, 3, &[1.0, 2.0, 3.0, 4.0, 5.0, 6.0]);

src/linalg/ndarray_bindings.rs

@@ -27,6 +27,10 @@ impl<T: FloatExt> BaseVector<T> for ArrayBase<OwnedRepr<T>, Ix1> {
     fn len(&self) -> usize {
         self.len()
     }
+
+    fn to_vec(&self) -> Vec<T> {
+        self.to_owned().to_vec()
+    }
 }
 
 impl<T: FloatExt + ScalarOperand + AddAssign + SubAssign + MulAssign + DivAssign + Sum>
@@ -351,6 +355,12 @@ mod tests {
         assert_eq!(3, v.len());
     }
 
+    #[test]
+    fn vec_to_vec() {
+        let v = arr1(&[1., 2., 3.]);
+        assert_eq!(vec![1., 2., 3.], v.to_vec());
+    }
+
     #[test]
     fn from_to_row_vec() {
         let vec = arr1(&[1., 2., 3.]);