__ is a professional social networking site where you can find past and present colleagues and classmates, connect with appropriate people when seeking a new job or business opportunity, or get answers from industry experts.

________ is a web based application

A) Google Drive B) StarOffice C) Calligra D) LibreOffice

What are the accuracy, precision, recall, and F1-measure of the new decision tree?

Following is a data set that contains two attributes, X and Y , and two class
labels, “+” and “?”. Each attribute can take three different values: 0, 1, or 2.

The concept for the “+” class is Y = 1 and the concept for the “?” class is
X = 0 ? X = 2.