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CIFAR 10 Image Classification

Image classification on the CIFAR 10 Dataset using Support Vector Machines (SVMs), Fully Connected Neural Networks and Convolutional Neural Networks (CNNs). The files are organized as follows:

SVMs_Part1 -- Image Classification on the CIFAR-10 Dataset using Support Vector Machines. Different types of kernels are used including Linear Kernel, Polynomial Kernel and the Radial Basis Function (RBF) Kernel.

SVMs_Part2_PCA -- Image Classification on the CIFAR-10 Dataset using Support Vector Machines. Principal Component Analysis (PCA) is used for dimensionality reduction. The number of dimensions are chosen based on the cumulative explained variance, as shown below:

Number of Components Percentage variance explained
150 93.1
500 98.5

Test results for the two transformations are shown below:

Number of Components Test Set Accuracy
150 40.2
500 39.6

CNNs_Part1 -- Three different types of models are used in this case.

  1. A Fully Connected Neural Network (3 Layers).
  2. A Fully Convolutional Neural Network (4 Layers).
  3. A Hybrid Model containing both convolutional and fully-connected layers.

The results are tabulated below:

Model Test Set Accuracy
Fully Connected DNN 54
Fully Convolutional NN 71
Hybrid Model 66

CNNs_Part2 -- A Python File for training the convolutional neural network on the GPU.

See "Final_Report.pdf" for an analysis of the efficacy of the various algorithms on the CIFAR-10 Image Classification task. Some of the tricks used during training (e.g. cyclic learning rates) are also discussed.

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