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

Propositional truth tables, Propositional truth tables: There {X\t} is...

Propositional truth tables: There {X\t} is a substitution that replaces all occurances of variable X with a term representing an object t as:  ∀X. A is true if and only

What is model, What is model?  A universe together with an assignment o...

What is model?  A universe together with an assignment of relations to relation symbol is known as a model.  A model M is a tuple (U, P1, P2..Pk), where U is the universe and P

How to clear a datagrid on a button click, How to clear a datagrid on a but...

How to clear a datagrid on a button click? You require to Clear the DataSource of the dataGrid. So try this: dataSet1.Clear(); dataGrid1.DataSource = dataSet1.TableNam

Structured analysis and design approach, Q. Structured Analysis and Design ...

Q. Structured Analysis and Design Approach? The objective of structured system analysis and design is to reduce maintenance time as well as effort. Modeling is the act of drawi

Autonomous rational an agents, Autonomous Rational an Agents: In many ...

Autonomous Rational an Agents: In many cases, it is inaccurate to talk about a single program or a single robot, as the multi-purpose and multi-tasking system of hardware and

What is the use of system.data.dlinq.dll, System.Data.DLinq.dll gives funct...

System.Data.DLinq.dll gives functionality to work with LINQ to SQL.

Single instruction and multiple data stream (simd), Single Instruction and ...

Single Instruction and Multiple Data stream (SIMD) In this organisation, multiple processing elements are working under the control of a one control unit. It has multiple data

Explain the term internet, Explain the term Internet. Internet: ...

Explain the term Internet. Internet: The Internet, an umbrella term covering countless network and services that comprise a super-network, is a global network of compute

Write the command to show the ip host table, show hosts is the command whi...

show hosts is the command which display the IP host table

Entropy - learning decision trees, Entropy - learning decision trees: ...

Entropy - learning decision trees: Through putting together a decision of tree is all a matter of choosing that attribute to test at each node in the tree. Further we shall de

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