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

Scope of expert system, The scope of the experts system is very limite...

The scope of the experts system is very limited. It cannot work outside the field it is being used. The users knowledge is required to adjust to new situation. To reduce

Discuss program testing and debugging in detail, Discuss program testing an...

Discuss program testing and debugging in detail. In program debugging and testing significant steps are as follows: a. For the program, construction of test data b. Analy

Illustrate shift micro-operations, Q. Illustrate Shift Micro-operations? ...

Q. Illustrate Shift Micro-operations? Shift is a valuable operation that can be used for serial transfer of data. These operations can also be used along with other (arithmetic

What is dvd and dvd-rom, DVD is a new technology very same to compact discs...

DVD is a new technology very same to compact discs. A DVD looks just like an ordinary compact disc, though a DVD can hold up to 25 times as much as a CD!! That's 18 gigabytes!! Thi

Utility functions - artificial intelligence, Utility Functions - artificial...

Utility Functions - artificial intelligence: A goal based on an agent for playing chess is infeasible: at every moment it decides which move to play next, it sees whether that

Explain the major consideration of laptop computers, Explain the major cons...

Explain the major consideration of laptop One of the major considerations when buying a laptop is battery life. This can rely on a number of things though one major factor is p

What the first part of the address identifies in e-mailbox, The first part ...

The first part of the address in electronic mailbox identifies? The first part of address in E-Mail identifies the user's mail box.

What is a user diagram protocol, UDP (User Diagram Protocol) is? It is ...

UDP (User Diagram Protocol) is? It is both Connectionless and Message Oriented.

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