[英]RuntimeError: quantile() q tensor must be same dtype as the input tensor in pytorch-forecasting
沒有錯誤
錯誤是
文件 c:\Users\josepeeterson.er\Miniconda3\envs\pytorch\lib\site-packages\pytorch_forecasting\metrics\base_metrics.py:979,在 DistributionLoss.to_quantiles(self, y_pred, quantiles, n_samples) 977 除了 NotImplementedError: #ImplementedError依靠經驗得出分位數 978 個樣本 = torch.sort(self.sample(y_pred, n_samples), -1).values --> 979 個分位數 = torch.quantile(samples, torch.tensor(quantiles, device=samples.device) , dim=2).permute(1, 2, 0) 980 返回分位數
RuntimeError: quantile() q 張量必須與輸入張量具有相同的 dtype
如何將它們設置為相同的數據類型? 這發生在內部。 我無法控制這一點。 我沒有使用任何 GPU。
帶有輸入數據的 .csv 文件的鏈接是https://github.com/JosePeeterson/Demand_forecasting數據只是每 4 小時從帶有參數 (9,0.5) 的負二元分布中采樣的。 兩者之間的時間都為零。 我只是想看看 DeepAR 是否可以學習這種模式。
from pytorch_forecasting.data.examples import generate_ar_data
import matplotlib.pyplot as plt
import pandas as pd
from pytorch_forecasting.data import TimeSeriesDataSet
from pytorch_forecasting.data import NaNLabelEncoder
from pytorch_lightning.callbacks import EarlyStopping, LearningRateMonitor
import pytorch_lightning as pl
from pytorch_forecasting import NegativeBinomialDistributionLoss, DeepAR
import torch
from pytorch_forecasting.data.encoders import TorchNormalizer
data = [pd.read_csv('1_f_nbinom_train.csv')]
data["date"] = pd.Timestamp("2021-08-24") + pd.to_timedelta(data.time_idx, "H")
data['_hour_of_day'] = str(data["date"].dt.hour)
data['_day_of_week'] = str(data["date"].dt.dayofweek)
data['_day_of_month'] = str(data["date"].dt.day)
data['_day_of_year'] = str(data["date"].dt.dayofyear)
data['_week_of_year'] = str(data["date"].dt.weekofyear)
data['_month_of_year'] = str(data["date"].dt.month)
data['_year'] = str(data["date"].dt.year)
max_encoder_length = 60
max_prediction_length = 20
training_cutoff = data["time_idx"].max() - max_prediction_length
training = TimeSeriesDataSet(
data.iloc[0:-620],
time_idx="time_idx",
target="value",
categorical_encoders={"series": NaNLabelEncoder(add_nan=True).fit(data.series), "_hour_of_day": NaNLabelEncoder(add_nan=True).fit(data._hour_of_day), \
"_day_of_week": NaNLabelEncoder(add_nan=True).fit(data._day_of_week), "_day_of_month" : NaNLabelEncoder(add_nan=True).fit(data._day_of_month), "_day_of_year" : NaNLabelEncoder(add_nan=True).fit(data._day_of_year), \
"_week_of_year": NaNLabelEncoder(add_nan=True).fit(data._week_of_year), "_year": NaNLabelEncoder(add_nan=True).fit(data._year)},
group_ids=["series"],
min_encoder_length=max_encoder_length,
max_encoder_length=max_encoder_length,
min_prediction_length=max_prediction_length,
max_prediction_length=max_prediction_length,
time_varying_unknown_reals=["value"],
time_varying_known_categoricals=["_hour_of_day","_day_of_week","_day_of_month","_day_of_year","_week_of_year","_year" ],
time_varying_known_reals=["time_idx"],
add_relative_time_idx=False,
randomize_length=None,
scalers=[],
target_normalizer=TorchNormalizer(method="identity",center=False,transformation=None )
)
validation = TimeSeriesDataSet.from_dataset(
training,
data.iloc[-620:-420],
# predict=True,
stop_randomization=True,
)
batch_size = 64
train_dataloader = training.to_dataloader(train=True, batch_size=batch_size, num_workers=8)
val_dataloader = validation.to_dataloader(train=False, batch_size=batch_size, num_workers=8)
# save datasets
training.save("training.pkl")
validation.save("validation.pkl")
early_stop_callback = EarlyStopping(monitor="val_loss", min_delta=1e-4, patience=5, verbose=False, mode="min")
lr_logger = LearningRateMonitor()
trainer = pl.Trainer(
max_epochs=10,
gpus=0,
gradient_clip_val=0.1,
limit_train_batches=30,
limit_val_batches=3,
# fast_dev_run=True,
# logger=logger,
# profiler=True,
callbacks=[lr_logger, early_stop_callback],
)
deepar = DeepAR.from_dataset(
training,
learning_rate=0.1,
hidden_size=32,
dropout=0.1,
loss=NegativeBinomialDistributionLoss(),
log_interval=10,
log_val_interval=3,
# reduce_on_plateau_patience=3,
)
print(f"Number of parameters in network: {deepar.size()/1e3:.1f}k")
torch.set_num_threads(10)
trainer.fit(
deepar,
train_dataloaders=train_dataloader,
val_dataloaders=val_dataloader,
)
需要將樣本投射到 torch.tensor 中,如下所示。 然后保存這個 base_metrics.py 並重新運行上面的代碼。
except NotImplementedError: # resort to derive quantiles empirically
samples = torch.sort(self.sample(y_pred, n_samples), -1).values
quantiles = torch.quantile(torch.tensor(samples), torch.tensor(quantiles, device=samples.device), dim=2).permute(1, 2, 0)
return quantiles
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