def test_NNEstimator_works_with_VectorAssembler_multi_input(self):
if self.sc.version.startswith("2"):
from pyspark.ml.linalg import Vectors
from pyspark.ml.feature import VectorAssembler
from pyspark.sql import SparkSession
spark = SparkSession \
.builder \
.getOrCreate()
df = spark.createDataFrame(
[(1, 35, 109.0, Vectors.dense([2.0, 5.0, 0.5, 0.5]), 1.0),
(2, 58, 2998.0, Vectors.dense([4.0, 10.0, 0.5, 0.5]), 2.0),
(3, 18, 123.0, Vectors.dense([3.0, 15.0, 0.5, 0.5]), 1.0)],
["user", "age", "income", "history", "label"])
assembler = VectorAssembler(
inputCols=["user", "age", "income", "history"],
outputCol="features")
df = assembler.transform(df)
x1 = ZLayer.Input(shape=(1, ))
x2 = ZLayer.Input(shape=(2, ))
x3 = ZLayer.Input(shape=(
2,
2,
))
user_embedding = ZLayer.Embedding(5, 10)(x1)
flatten = ZLayer.Flatten()(user_embedding)
dense1 = ZLayer.Dense(2)(x2)
gru = ZLayer.LSTM(4, input_shape=(2, 2))(x3)
merged = ZLayer.merge([flatten, dense1, gru], mode="concat")
zy = ZLayer.Dense(2)(merged)
zmodel = ZModel([x1, x2, x3], zy)
criterion = ClassNLLCriterion()
classifier = NNClassifier(zmodel, criterion, [[1], [2], [2, 2]]) \
.setOptimMethod(Adam()) \
.setLearningRate(0.1) \
.setBatchSize(2) \
.setMaxEpoch(10)
nnClassifierModel = classifier.fit(df)
print(nnClassifierModel.getBatchSize())
res = nnClassifierModel.transform(df).collect()
def test_nnEstimator_multiInput_cols(self):
from pyspark.ml.linalg import Vectors
from pyspark.sql import SparkSession
spark = SparkSession \
.builder \
.getOrCreate()
df = spark.createDataFrame(
[(1, 35, 109.0, Vectors.dense([2.0, 5.0, 0.5, 0.5]), 1.0),
(2, 58, 2998.0, Vectors.dense([4.0, 10.0, 0.5, 0.5]), 2.0),
(3, 18, 123.0, Vectors.dense([3.0, 15.0, 0.5, 0.5]), 1.0),
(4, 18, 123.0, Vectors.dense([3.0, 15.0, 0.5, 0.5]), 1.0)],
["user", "age", "income", "history", "label"])
x1 = ZLayer.Input(shape=(1, ))
x2 = ZLayer.Input(shape=(2, ))
x3 = ZLayer.Input(shape=(
2,
2,
))
user_embedding = ZLayer.Embedding(5, 10)(x1)
flatten = ZLayer.Flatten()(user_embedding)
dense1 = ZLayer.Dense(2)(x2)
gru = ZLayer.LSTM(4, input_shape=(2, 2))(x3)
merged = ZLayer.merge([flatten, dense1, gru], mode="concat")
zy = ZLayer.Dense(2)(merged)
zmodel = ZModel([x1, x2, x3], zy)
criterion = ClassNLLCriterion()
est = Estimator.from_bigdl(model=zmodel,
loss=criterion,
optimizer=Adam(learningrate=0.1),
feature_preprocessing=[[1], [2], [2, 2]])
est.fit(df,
epochs=1,
batch_size=4,
feature_cols=["user", "age", "income", "history"])
res = est.predict(df,
feature_cols=["user", "age", "income", "history"])
res_c = res.collect()
assert type(res).__name__ == 'DataFrame'
def _to_tensor(self):
flatten = zlayers.Flatten()
return flatten(self.model_inputs[0].zvalue)