From f0b9a10cb812dba6f2564eae2116b7985c132700 Mon Sep 17 00:00:00 2001
From: Leonid Kostrykin <void@evoid.de>
Date: Tue, 16 Jul 2024 09:26:36 +0000
Subject: [PATCH] Remove `self.w`

---
 superdsm/dsm.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/superdsm/dsm.py b/superdsm/dsm.py
index 594bf7d..eedbf31 100644
--- a/superdsm/dsm.py
+++ b/superdsm/dsm.py
@@ -337,7 +337,7 @@ def grad(self, params):
         grad = np.sum([term1 * q for q in self.q], axis=1)
         term1_sparse = coo_matrix(term1).transpose(copy=False)
         if self.smooth_mat.shape[1] > 0:
-            grad2  = (self.w.reshape(-1)[None, :] @ self.smooth_mat.multiply(term1_sparse)).reshape(-1)
+            grad2  = self.smooth_mat.multiply(term1_sparse).sum(axis=0).reshape(-1)
             grad2 += self.alpha * (params.ξ / self.term2)
             grad   = np.concatenate([grad, grad2])
         return grad