Validation data: How it works and why you need it - Machine Learning Basics Explained

What is a validation dataset and how is it different from the training and test data? In this video I go through the definition, explain everythin with an example and tell you about some of the dangers of not splitting your data properly :)

TIMESTAMPS:
0:00 Train-test Split
00:37 Quick definition
00:59 Training vs Validation on example
2:41 Recap
3:17 Test data
4:52 Recap

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[sourabhtiwri]

What is the best percentage for all the 3 data to accept the model

[abdullahfrat]

teacher can you share this presenantion?

[shrinidhig]

I still do not get the difference between validation and test data... validation data is also a new set of data for the model right. which it has never seen before. so is test data. the result of the validation and test data will be more of less the same. As I've understood test data is just a 2nd layer of testing after validation data. is that correct ?