What is Overfitting and Underfitting in Machine Learning?

Sam Malik 2 min read 0 views
What is Overfitting and Underfitting in Machine Learning?

When building ML models, two common problems occur:

Overfitting

Overfitting happens when a model learns the training data too well, including noise and outliers.
It performs very well on training data but poorly on new data.

Underfitting

Underfitting happens when a model is too simple and fails to capture patterns in data.

How to Prevent Overfitting?

  • Use more data

  • Apply cross-validation

  • Use regularization (L1/L2)

  • Prune decision trees

A good model balances bias and variance for better generalization.

Top Machine Learning Algorithms Every Engineer Should Know

Here are some essential ML algorithms:

  1. Linear Regression – Used for predicting continuous values.

  2. Logistic Regression – Used for classification problems.

  3. Decision Trees – Easy to interpret and powerful.

  4. Random Forest – Ensemble method improving accuracy.

  5. K-Means Clustering – Popular clustering algorithm.

  6. Neural Networks – Foundation of deep learning.

Mastering these algorithms builds a strong ML foundation.

Why Machine Learning is the Future of Technology

Machine Learning is reshaping the world. From self-driving cars to AI chatbots, ML systems are becoming smarter every day.

Industries using ML:

  • Healthcare (disease prediction)

  • Finance (fraud detection)

  • Cybersecurity (threat detection)

  • E-commerce (recommendation systems)

As data continues to grow exponentially, Machine Learning will play an even bigger role in decision-making and automation.

Learning ML today means preparing for tomorrow’s technology landscape.

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