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

Explain about associative memory organisations, Q. Explain about Associativ...

Q. Explain about Associative Memory Organisations? The associative memory is arranged in w words with b bits per word. In w x b array, every bit is known as a cell. Every cell

Design-centered virtual manufacturing, Design-Centered Virtual Manufacturin...

Design-Centered Virtual Manufacturing This gives manufacturing information to the designer throughout the design phase. In this observing the short term and long time definitio

Ring, Ring This is a easy linear array where the end nodes are connecte...

Ring This is a easy linear array where the end nodes are connected.  It is equivalent to a engage with wrap around connections. The data transmit in a ring is normally one dire

Dbms, what is cascading rolback?

what is cascading rolback?

What is a multiple line field, What is a multiple line field? A multipl...

What is a multiple line field? A multiple line field is a special part of field which allows the user to enter multiple lines of data into it.

What are kinds of models, What are kinds of models? Class model - Objec...

What are kinds of models? Class model - Objects in the system and their relationships. State model - Life history of the objects. Interaction model - Interactions between

Explain the term - ancestors, Explain the term - ancestors The ancestor...

Explain the term - ancestors The ancestors of modern age computer were mechanical and electro-mechanical instruments. This ancestry can be traced as back and seventeenth centur

Analysis of amdahls law, The outcomes of analysis of Amdahl's law are: 1...

The outcomes of analysis of Amdahl's law are: 1) To optimize the performance of parallel computers, modified compilers need to be developed which should aim to decrease the numb

Implementation of 4-to-1 multiplexer, Implement the Y(A, B, C) = ∑(2,3,5,6)...

Implement the Y(A, B, C) = ∑(2,3,5,6) function using 4-to-1 multiplexer.   Ans. Y(A,B,C)=∑(2,3,5,6) Here we take B,C as the select bits also A as input. To select the input we can

How are devices represented in unix, How are devices represented in UNIX? ...

How are devices represented in UNIX? All devices are shown by files called special files that are located in /dev directory. Therefore, device files and other files are named a

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