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Introduction to Feature Engineering in Machine Learning
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In this video, we will learn about feature engineering in Machine Learning.
Feature engineering is a critical task that data scientists have to perform prior to training AI/ML models.
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As a data scientist, you may need to:
- Highlight important information in the data
- Remove/isolate unnecessary information (e.x.: outliers).
- Add your own expertise and domain knowledge to alter the data.
Feature engineering is an art of introducing new features that weren’t existing before. Data scientists spend 80% of their time performing feature engineering. The remaining 20% is the easy part which includes training the model and performing hyperparameters optimization.
Performing proper feature engineering is crucial to improve AI/ML model performance.
As a data scientist, you need to answer the following questions:
- What are the capabilities of the ML model I have?
- Which features should I select?
- Can I add my domain knowledge to use less features?
- Can I come up with new features from the data I have at hand?
- What should I put in the missing data locations?
It is important to choose features that are most relevant to the problem.
Adding new features that are unnecessary will increase the computational requirements needed to train the model (curse of dimensionality).
There are numerous techniques that could be used to reduce the number of features (compress/encode the data) such as Principal Component Analysis (PCA).
Thanks.
#featureengineering #machinelearning
Feature engineering is a critical task that data scientists have to perform prior to training AI/ML models.
Check out top-rated Udemy courses here:
10 days of No Code AI Bootcamp
Modern Artificial Intelligence with Zero Coding
Python & Machine Learning for Financial Analysis
Modern Artificial Intelligence Masterclass: Build 6 Projects
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As a data scientist, you may need to:
- Highlight important information in the data
- Remove/isolate unnecessary information (e.x.: outliers).
- Add your own expertise and domain knowledge to alter the data.
Feature engineering is an art of introducing new features that weren’t existing before. Data scientists spend 80% of their time performing feature engineering. The remaining 20% is the easy part which includes training the model and performing hyperparameters optimization.
Performing proper feature engineering is crucial to improve AI/ML model performance.
As a data scientist, you need to answer the following questions:
- What are the capabilities of the ML model I have?
- Which features should I select?
- Can I add my domain knowledge to use less features?
- Can I come up with new features from the data I have at hand?
- What should I put in the missing data locations?
It is important to choose features that are most relevant to the problem.
Adding new features that are unnecessary will increase the computational requirements needed to train the model (curse of dimensionality).
There are numerous techniques that could be used to reduce the number of features (compress/encode the data) such as Principal Component Analysis (PCA).
Thanks.
#featureengineering #machinelearning
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