Hi,
I want to clear all symbols but i want to keep just J and GradientDescent in this group.
 
?Global`*
 Global`
A   i n   x x4  \[Alpha]$    $3 $8
bfp J   n$    X  X$   \[Theta]  $4   
cp  lp   predict1  x1   y \[CapitalTheta] $5  
ex1data1    m  predict2 x2  y$   \[Theta]$ $6  
GradientDescent m$  sf   x3    \[Alpha]   \[CapitalTheta]$  $7
Is there a clever way to achieve this rather than use
ClearAll[A, i, n, ...]
Thanks