Data Engineering, Algorithms, Data, Data Structures, Probability.
+---+----+---+----+---+---+---+----+ | 1| 0| 0| 1| 0| 0| 0| 0| +---+----+---+----+---+---+---+----+ | 0| 2| 0| 0| 0| 0| 0| 1| +---+----+---+----+---+---+---+----+ | 0| 0| 0| 1| 1| 0| 1| 0| +---+----+---+----+---+---+---+----+ Now, let’s say we want to estimate the frequency of the item "apple" in