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

Specifying research problems, Specifying Research Problems: In our age...

Specifying Research Problems: In our agent terminology or in technique history, a problem to be solved is a specific and justified manner where the agent has starts with the b

Describe the lists used in html, Q. Describe the LISTS used in html? Li...

Q. Describe the LISTS used in html? Lists are used when data are to be mentioned in form of points such as: causes of a particular issue, list of items etc. Lists break up mono

Explain real time systems, Q. Explain Real time system? A real time sys...

Q. Explain Real time system? A real time system defines an interactive processing system with severe time limitations. A real-time system is used whenever there are rigid time

How many tables can an append structure be assigned, To how many tables can...

To how many tables can an append structure be assigned. One table can be assigned to append structure.

Explain the following the address instruction, Explain the following the ad...

Explain the following the address instruction?  Three-address instruction-it can be represented as add a,b,c Two-address instruction-it can be shown as Add a,b

Single instruction and single data stream (sisd), Single Instruction and Si...

Single Instruction and Single Data stream (SISD) In this organisation, sequential implementation of instructions is executed by one CPU having a single processing element (PE

What is compact disk recordable, Q. What is Compact Disk Recordable? To...

Q. What is Compact Disk Recordable? To accommodate applications in which just one or a small number of copies of a set data is required write-once read-many CD called as CD Rec

Diiferentiate between ROM and PROM, Diiference between ROM and PROM. R...

Diiference between ROM and PROM. ROM: It also called Read Only Memory is a Permanent Memory. The data is permanently stored and cannot be changed in Permanent ROM. This can o

Where do you set automatic correlation options, Automatic correlation from ...

Automatic correlation from web point of sight can be set in recording options and correlation tab. Here we can enable correlation for the whole script and choose either issue onlin

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