1. Calculate the distance (dissimilarly) between two data objects with three continuous numeric attributes: O1 (5.0, 4.0, 2.0) and O2 (3.0, 5.0, 0.0). Show calculations and final results. Manhattan distance (O1, O2) = Euclidean distance (O1, O2) =

in weka What is the purpose of splitting the data set into a training data set and a test data set?Why some people split the data into training and testing?

1. The following model is used by a books-are-us data warehouse:

Time (Time_id, Month, Year)

Customer_Demographics (Dem_id, Age_group, Min_age, Max_age, Gender)

Facts (Time_id, Dem_id, Total_Sales_Amount, No_of_books_sold)

Write an SQL query to list the total books purchased by female customers (Gender = F) in December 2015.