From 1b8ea151df33c7b383886b87cc2c28f2af23e2e5 Mon Sep 17 00:00:00 2001
From: ned <daniele.nerini@meteoswiss.ch>
Date: Fri, 31 Mar 2023 09:12:15 +0200
Subject: [PATCH] Fix performance issue with sample weights

See https://github.com/keras-team/keras/pull/17357
---
 mlpp_lib/train.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mlpp_lib/train.py b/mlpp_lib/train.py
index d3846c4..9a28530 100644
--- a/mlpp_lib/train.py
+++ b/mlpp_lib/train.py
@@ -90,7 +90,7 @@ def train(
     res = model.fit(
         x=datamodule.train.x,
         y=datamodule.train.y,
-        sample_weight=datamodule.train.w,
+        sample_weight=(datamodule.train.w,) if datamodule.train.w is not None else None,
         epochs=cfg.get("epochs", 1),
         validation_data=(datamodule.val.x, datamodule.val.y),
         callbacks=callbacks,