Classifying Handwritten Digits using MNIST Dataset

The goal of this data science project is to take an image of a handwritten single digit, and determine what that digit is.

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What will you learn

  • Unzipping folders and loading the dataset

  • Visualizing different images available in the dataset

  • Using the summary function for basic EDA

  • Understanding left-skew and right-skew of the dataset

  • Preprocessing the train dataset for initial predictions

  • Apply ensemble model Random Forest for predictions

  • Use the Importance function in R for extracting the necessary features

  • Plotting graphs for feature versus MeanDecresedGini

  • Hyper-parameter tuning Random Forest and selecting the best parameters for this model

  • Plotting graphs for against parameters and OOB errors

  • Importing FNN library and using K-nearest neighbors as the training model

  • Importing XGBoost and converting Dataset into DMatrix for performing predictions

  • Defining parameters and performing Cross Folds validation using XGBoost model

  • Predicting using XGBoost and saving the predictions in form of CSV

  • Installing h2o package for using complete RAM and CPU cores available

  • Initializing an h2o cluster

  • Initializing a DeepLearning Neural Networks model

  • Defining , Understanding parameters and Training Neural Networks for predictions

  • Plotting Confusion matrix and interpreting the result

  • Predicting the result and saving it in the form of CSV

  • Shutting down the h2o created cluster

Project Description

Data scientists looking for their first machine learning or data science project begin by trying the handwritten digit recognition problem. The Digit Recognizer data science project makes use of the popular MNIST database of handwritten digits, taken from American Census Bureau employees. The dataset consists of already pre-processed and formatted 60,000 images of 28x28 pixel handwritten digits. With the use of image recognition techniques and a chosen machine learning algorithm, a program can be built to accurately read the handwritten digits with 95% accuracy. The accuracy rate can be higher based on the chosen machine learning algorithm,

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Curriculum For This Mini Project

 
  27-Feb-2016
04h 29m