The iron ML notebook
  • The iron data science notebook
  • ML & Data Science
    • Frequent Questions
      • Discriminative vs Generative models
      • Supervised vs Unsupervised learning
      • Batch vs Online Learning
      • Instance-based vs Model-based Learning
      • Bias-Variance Tradeoff
      • Probability vs Likelihood
      • Covariance vs Correlation Matrix
      • Precision vs Recall
      • How does a ROC curve work?
      • Ridge vs Lasso
      • Anomaly detection methods
      • How to deal with imbalanced datasets?
      • What is "Statistically Significant"?
      • Recommendation systems methods
    • Statistics
      • The basics
      • Distributions
      • Sampling
      • IQR
      • Z-score
      • F-statistic
      • Outliers
      • The bayesian basis
      • Statistic vs Parameter
      • Markov Monte Carlo Chain
    • ML Techniques
      • Pre-process
        • PCA
      • Loss functions
      • Regularization
      • Optimization
      • Metrics
        • Distance measures
      • Activation Functions
      • Selection functions
      • Feature Normalization
      • Cross-validation
      • Hyperparameter tuning
      • Ensemble methods
      • Hard negative mining
      • ML Serving
        • Quantization
        • Kernel Auto-Tuning
        • NVIDIA TensorRT vs ONNX Runtime
    • Machine Learning Algorithms
      • Supervised Learning
        • Support Vector Machines
        • Adaptative boosting
        • Gradient boosting
        • Regression algorithms
          • Linear Regression
          • Lasso regression
          • Multi Layer Perceptron
        • Classification algorithms
          • Perceptron
          • Logistic Regression
          • Multilayer Perceptron
          • kNN
          • Naive Bayes
          • Decision Trees
          • Random Forest
          • Gradient Boosted Trees
      • Unsupervised learning
        • Clustering
          • Clustering metrics
          • kMeans
          • Gaussian Mixture Model
          • Hierarchical clustering
          • DBSCAN
      • Cameras
        • Intrinsic and extrinsic parameters
    • Computer Vision
      • Object Detection
        • Two-Stage detectors
          • Traditional Detection Models
          • R-CNN
          • Fast R-CNN
          • Faster R-CNN
        • One-Stage detectors
          • YOLO
          • YOLO v2
          • YOLO v3
          • YOLOX
        • Techniques
          • NMS
          • ROI Pooling
        • Metrics
          • Objectness Score
          • Coco Metrics
          • IoU
      • MOT
        • SORT
        • Deep SORT
  • Related Topics
    • Intro
    • Python
      • Global Interpreter Lock (GIL)
      • Mutability
      • AsyncIO
    • SQL
    • Combinatorics
    • Data Engineering Questions
    • Distributed computation
      • About threads & processes
      • REST vs gRPC
  • Algorithms & data structures
    • Array
      • Online Stock Span
      • Two Sum
      • Best time to by and sell stock
      • Rank word combination
      • Largest subarray with zero sum
    • Binary
      • Sum of Two Integers
    • Tree
      • Maximum Depth of Binary Tree
      • Same Tree
      • Invert/Flip Binary Tree
      • Binary Tree Paths
      • Binary Tree Maximum Path Sum
    • Matrix
      • Set Matrix Zeroes
    • Linked List
      • Reverse Linked List
      • Detect Cycle
      • Merge Two Sorted Lists
      • Merge k Sorted Lists
    • String
      • Longest Substring Without Repeating Characters
      • Longest Repeating Character Replacement
      • Minimum Window Substring
    • Interval
    • Graph
    • Heap
    • Dynamic Programming
      • Fibonacci
      • Grid Traveler
      • Can Sum
      • How Sum
      • Best Sum
      • Can Construct
      • Count Construct
      • All Construct
      • Climbing Stairs
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  • 0 - 1 Normalization
  • Z-score Normalization

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  1. ML & Data Science
  2. ML Techniques

Feature Normalization

0 - 1 Normalization

xj[i]=xj[i]−min(xj)max(xj)−min(xj)x_j^{[i]} = \frac{x_j^{[i]} - min(x_j) }{max(x_j) - min(x_j)} xj[i]​=max(xj​)−min(xj​)xj[i]​−min(xj​)​

Z-score Normalization

More recommended when using DL methods (due to the zero-centering)

xj[i]=xj[i]−mean(xj)std(xj)x_j^{[i]} = \frac{x_j^{[i]} - mean(x_j) }{std(x_j)} xj[i]​=std(xj​)xj[i]​−mean(xj​)​
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Last updated 3 months ago

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