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Unit 4-Data Science
School Revise · Class 10 Artificial Intelligence · Unit 4
Data Science
Code 417, Class 10. Data science finds meaning in data. Here we learn what it is and how a simple model works.
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What this unit is about
Data science studies data to find useful patterns and make predictions. It is a key part of the Data domain of AI.
1. Data, features and labels
Data has features (the inputs, like height and weight) and a label (the answer we want, like a category). A model learns the link between features and label.
2. A simple model
A simple model is k-nearest neighbours (kNN): to predict a new item, it looks at the closest known items and copies their answer. Similar items usually share a label.
3. Uses of data science
Data science is used for recommendations, weather forecasts, health checks and business decisions, wherever patterns in data can help.
Practise with the interactive
Explore the idea by tapping. The interactive opens right here in the lesson.
Practice set A, multiple choice
1. The inputs to a model are its …
features.
2. The answer we want to predict is the …
label.
3. A model that looks at the closest items is …
k-nearest neighbours (kNN).
4. Studying data to find patterns is …
data science.
Practice set B, short answer
1. What is data science?
Studying data to find useful patterns and make predictions.
2. What is the difference between a feature and a label?
A feature is an input; a label is the answer to predict.
3. How does k-nearest neighbours work?
It looks at the closest known items and copies their answer.
Quick summary
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Data science studies data to find patterns and make predictions, a key part of the Data domain. Data has features (inputs) and a label (the answer). A model learns the link between them. A simple model, k-nearest neighbours, predicts by looking at the closest known items and copying their answer. Data science is used for recommendations, forecasts and decisions. |
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These free Class 10 Artificial Intelligence (Code 417) notes explain data science, features and labels, the k-nearest neighbours model, and uses of data science with clear examples and practice, for CBSE students across India and the Gulf including the UAE, Saudi Arabia, Qatar, Oman, Kuwait and Bahrain.
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