复制来自http://spark.apache.org/docs/latest/mllib-data-types.html
A labeled point is represented by LabeledPoint.
Refer to the LabeledPoint Python docs for more details on the API.
from pyspark.mllib.linalg import SparseVector
from pyspark.mllib.regression import LabeledPoint
# Create a labeled point with a positive label and a dense feature vector.创建带有正标签和密集特征向量的标记点。
pos = LabeledPoint(1.0, [1.0, 0.0, 3.0])
# Create a labeled point with a negative label and a sparse feature vector.
neg = LabeledPoint(0.0, SparseVector(3, [0, 2], [1.0, 3.0]))