Avoiding over fitting in decision trees, Computer Engineering

Assignment Help:

Avoiding Over fitting - Artificial intelligence

As  we  discussed  in  the last  lecture,  over fitting  is  a  normal  problem  in machine learning. Decision trees suffer from that, because they are skilled to stop when  they  have  completely  classify  all  the  training  data,  i.e.,  every  branch  is complete  just  far sufficient to  suitably  categories  the  examples important to  the branch. Various ways to overcoming over fitting in decision trees have been used. As summarized by Tom Mitchell, these attempts fit into two types:

·       Stop growing the tree before it reaches excellence.

  • Allow the tree to complete grow, and then post-prune some of the branches from it.

The second approach has been found to be more useable in practice. Both methods boil down to the question of shaping the right tree size. See Chapter 3 of Tom Mitchell's book for more detailed explanation of over fitting  prevention in decision tree knowledge.

 


Related Discussions:- Avoiding over fitting in decision trees

What is delegation, What is Delegation? A delegate acts like a strongly...

What is Delegation? A delegate acts like a strongly type function pointer. Delegates can raise the methods that they reference without making explicit calls to those methods. D

How can we use metropolitan area network, Q. How can we use Metropolitan Ar...

Q. How can we use Metropolitan Area Network? A MAN, essentially a bigger versions of a LAN is designed to extend over an entire city. It may be single network like a cable tele

Select statements linked to a logical database, One cannot use SELECT state...

One cannot use SELECT statements in a report program linked to a Logical Database   False. You can use th SELECT statements.

How free-space is managed using bit vector implementation, How free-space i...

How free-space is managed using bit vector implementation? The free-space list is executed as a bit map or bit vector. Each block is shown by 1 bit. If the block is free, the b

How putchar function is used within a c program, How putchar function is us...

How putchar function is used within a C Program ? The following program reads each character in the first line of input entered at the terminal's keyboard. It uses putchar to d

What is the working set of a process, What is the working set of a process?...

What is the working set of a process? The set of pages that are referred by the method in the last "n", references, where "n" is called the window of the working set of the pro

Differentiate between time sharing & batch operating system, Differentiate ...

Differentiate between Batch Operating System and Time Sharing Operating System? Batch operating systems : A batch is a sequence of jobs. Such batch is submitted to batch proce

Show the mips addressing modes, Q. Show the MIPS Addressing Modes? MIP...

Q. Show the MIPS Addressing Modes? MIPS Addressing Modes MIPS employs various addressing modes: 1. Uses Register as well asimmediate addressing modes for operations.

What interface is extended by awt event listeners, All AWT event listeners ...

All AWT event listeners expand the java.util.EventListener interface.

Mplement a second-order low-pass filter using the finite dif, you will impl...

you will implement a second-order low-pass filter using the finite difference method. The finite difference method is a useful mathematical method that is used to numerically solve

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