Classification is a core supervised learning technique in data mining that assigns predefined labels to data points based on their features. The goal is to predict the category or class of new data points by learning from a labeled training dataset. Classification is widely used for tasks such as ...
• Classification, where a model or
classifier is constructed to predict class
(categorical) Labels
• Training Phase & Testing Phase
• Supervised learning and unsupervised
learning
• The accuracy of a classifier on a given
test set is the percentage of test set
tuples that are correctly classified by the
classifier
Dr.Priya Govindarajan
,Decision Tree Induction
• Decision tree induction is the learning of decision trees from class-labeled training tuples.
• Decision Tree is a Supervised learning technique that can be used for both classification an
problems, but mostly it is preferred for solving Classification problems. It is a tree-structur
where internal nodes represent the features of a dataset, branches represent the decision ru
leaf node represents the outcome.
• A decision tree simply asks a question, and based on the answer (Yes/No), it further split
subtrees.
Dr.Priya Govindarajan
, Example: Suppose there is a candidate who has a job offer and wants to decide whether he should accep
or Not.
Dr.Priya Govindaraj
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller mithun3. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.49. You're not tied to anything after your purchase.
