Building a Holographic Digit Classifier with NumPy and MNIST
In this post, we’ll explore how to build a simple, yet powerful, holographic memory system to classify handwritten digits from the popular MNIST dataset . Using NumPy , we’ll create a system that represents digits as holographic encodings —dense vector representations—and compares new images using cosine similarity . This approach draws inspiration from vector symbolic architectures (VSAs) and holographic reduced representations (HRRs) used in associative memory and cognitive modeling. 📦 Step 1: Organizing the Dataset Assume you have MNIST digit data where each digit ( 0 to 9 ) is stored in its own folder. Each image has been preprocessed and saved as a .npy file (a NumPy array), possibly as a vector encoding or 2D array. Folder structure: python-repl Copy Edit /mnist_vectors/ ├── 0/ │ ├── img_0.npy │ └── ... ├── 1/ │ └── ... ... ├── 9/ 🧪 Step 2: Create the Holographic Memory File We’ll create a single file ( digit_holograms.npz ) that stores a prototype ve...