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Checking dataset empty (#647)

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* Checking dataset empty

* add dataset checker
This commit is contained in:
you-n-g
2021-10-14 23:35:12 +08:00
committed by GitHub
parent 9a175d7507
commit 334b92ace7
21 changed files with 47 additions and 0 deletions
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qlib/contrib/model/double_ensemble.py
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@@ -64,6 +64,8 @@ class DEnsembleModel(Model, FeatureInt):
df_train, df_valid = dataset.prepare(
["train", "valid"], col_set=["feature", "label"], data_key=DataHandlerLP.DK_L
)
if df_train.empty or df_valid.empty:
raise ValueError("Empty data from dataset, please check your dataset config.")
x_train, y_train = df_train["feature"], df_train["label"]
# initialize the sample weights
N, F = x_train.shape