Document-Term Matrix Discussion

User Generated

cxfgnyva

Computer Science

Description

8. Discuss why a document-term matrix is an example of a data set that has asymmetric discrete or asymmetric continuous features.

10. Discuss the difference between the precision of a measurement and the terms single and double precision, as they are used in computer science, typically to represent floating-point numbers that require 32 and 64 bits, respectively.

22. Discuss how you might map correlation values from the interval [-1,1] to the interval [0,1]. Note that the type of transformation that you use might depend on the application that you have in mind. Thus, consider two applications:clustering time series and predicting the behavior of one time series given another.

27. Show that the distance measure defined as the angle between two data vectors,x and y, satisfies the metric axioms given on page 70. Specifically, d(x, y) : arccos(cos(x,y)).

User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Explanation & Answer

check the assignment

1

Running Head: DATA MINING

Data Mining
Student’s Name:
Institution:
Date:

DATA MINING

2
Data Mining

Question 8
The shorter entry of a document-term model is referred to as to the many times in which term j
appears in a document. In many cases, some items have a limited fraction of many terms
possible, and therefore zero entries become non-meaningful when comparing materials. This
makes the document-term matrix to have asymmetric discrete featu...


Anonymous
I use Studypool every time I need help studying, and it never disappoints.

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4

Similar Content

Related Tags