For instance, you know that age is not a linear function with the income. When people are young, their income is usually lower than mid-age. After retirement, a household uses their saving, meaning a decrease in income. To capture this pattern, you can add a square to the age feature ...
foreachPartition作用于每一个时间间隔的RDD中的每一个partition, foreach作用于每一个时间间隔的RDD中的每一个元素。 Foreach与ForeachPartition都是在每个partition中对iterator进行操作,不同的是,foreach是直接在每个partition中直接对iterator执行foreach操作,而传入的function只是在foreach内部使用,而foreachPartition是...