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

What is performance testing in loadrunner, Timing for both read and update ...

Timing for both read and update transactions should be gathered to verify whether system functions are being performed in an acceptable timeframe. This should be done standalone an

Poor human support - obstacle to information system, Poor human support - O...

Poor human support - Obstacle to Information System The full utility of an IS will only be realised if it is properly supported by the users. Technology is never a solution in

What is scsi, What is SCSI? Ans: It is the acronym for small computer s...

What is SCSI? Ans: It is the acronym for small computer system interface. It refers to a standard bus explained ANSI. Devices such as disks are linked to a computer via 50-wire

Microprocesseor, In8085 are of the following statements is not true.A) Co-p...

In8085 are of the following statements is not true.A) Co-processor is interfaced in max mode. B) Co-processor is interfaced in MIN mode C )Co-processor is interfaced in max/min mod

Differences between inter statement and intra statement, Differences betwee...

Differences between inter statement and intra statement delay? //define register variables reg a, b, c; //intra assignment delays initial begin a = 0; c = 0;

Summary of tasks, Summary of Tasks Task Summary attempts to show amoun...

Summary of Tasks Task Summary attempts to show amount of duration every task has spent starting from beginning of task until its completion on any processor as displayed in Fi

What are the process states in unix, What are the process states in Unix? ...

What are the process states in Unix? As a process implements it changes state according to its circumstances. Unix processes have the following states: Running : The process

Derivatives and applications of derivatives, What can you say about the exi...

What can you say about the existence of a stationary point in the interval [ 1; 3] for the function f (x) = x 2 2x 3.

What is recursing downwards, What is recursing downwards? And its ways. ...

What is recursing downwards? And its ways. The design process generally works top-down; you start with the higher level operations and proceed to describe lower level operation

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