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What is the Difference Between Lazy and Eager Learning?

Answer: Lazy learning defers the computation of predictions until needed, relying on instance-specific information, while eager learning precomputes a model during training, making predictions faster but potentially requiring more memory.

Lazy learning and eager learning are two contrasting approaches in machine learning, primarily referring to the handling of model construction and prediction. Let’s delve into the details of the differences between lazy and eager learning:

Aspect Lazy Learning Eager Learning
Timing of Model Building The model is built during prediction. The model is built before prediction.
Data Dependency Relies heavily on the training data during prediction. Less dependent on training data during prediction.
Computational Efficiency Faster during training, but slower during prediction due to real-time model building. Slower during training, but faster during prediction due to pre-built model.
Example k-Nearest Neighbors (KNN) Decision Trees, Support Vector Machines (SVM), Neural Networks
Memory Usage Less memory usage during training, but more during prediction. More memory usage during training, but less during prediction.

Conclusion:

In summary, the choice between lazy and eager learning depends on factors such as the size of the dataset, computational resources, adaptability to new data, and the trade-off between memory usage and prediction speed. Each approach has its strengths and weaknesses, making them suitable for different types of machine learning tasks.


 


Reffered: https://www.geeksforgeeks.org

AI ML DS

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