Avoiding overfitting - decision tree learning , Computer Engineering

Assignment Help:

Avoiding Overfitting :

However remember there that in the previous lecture, there is over fitting that common problem in machine learning. Furthermore details to decision trees suffer from this is because they are trained to stop where they have perfectly classified all the training data that i.e., each branch is extended that is far enough to correctly categorise the examples relevant to that branch. In fact many other approaches to overcoming overfitting in decision trees have been attempted but as a summarised by Tom Mitchell there these attempts fit into two types as:

• Just stop growing the tree before it reaches perfection, and
• Now allow the tree to fully grow so then post-prune some of the branches from it.

Hence the second approach has been found to be more victorious in practice. Means that both approaches boil down to the question of determining the correct tree size. Here you can see Chapter 3 of Tom Mitchell's book for a more detailed description of overfitting avoidance in decision tree learning.


Related Discussions:- Avoiding overfitting - decision tree learning

Define http, Http Hyper Text Transfer Protocol: The WWW protocol that...

Http Hyper Text Transfer Protocol: The WWW protocol that performs the request and regain functions of a server. Generally seen as the first part of a website address. It is t

Find values of x using 7s complement, Q. Perform binary subtraction, using ...

Q. Perform binary subtraction, using 1s & 2s complement: 1) 1010-1011 2) 0.1111-0.101 3) 11.11-10.111 Q.  (192.25)10 - (C0.C)16 = (x)7 Find values of x, using 7's compl

TIME COMPLEXITY, calculate the time complexity of a=(b/c) operation in stac...

calculate the time complexity of a=(b/c) operation in stack

What is closed system, Closed System: It's isolated from environment influ...

Closed System: It's isolated from environment influences. It operates on factors within System itself. It is also described as a System which involves a feedback loop, a control e

Mobile computing, Explain the key characteristics of mobile computing appli...

Explain the key characteristics of mobile computing applications

Face detection, i want the matlab code for the following events 1. face det...

i want the matlab code for the following events 1. face detection 2. video to frame conversion 3.video shot boundary detection

Learning weights in perceptrons, Learning Weights in Perceptrons In det...

Learning Weights in Perceptrons In detail we will look at the learning method for weights in multi-layer networks next chapter. The following description of learning in percept

Bit manipulation techniques and mathematical functions, Within micro contro...

Within micro controller's software, it is very useful to be able to manipulate binary bits i.e. from ports etc. The ALU has command to shift data, rotate data, compare data, set/cl

What is relational database, What is relational database? Relational da...

What is relational database? Relational database has data that is perceived as tables. A relational DBMS manages tables of data and associated structures that enhances the func

Which address is specially used by transport layer, The addressing speciall...

The addressing specially used by Transport Layer is? The addressing particularly used through transport layer is application port address.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd