AI • Machine Learning • Tech on Instagram: "AlexNet’s convolutional blocks learn hierarchical feature detectors that become increasingly abstract as data flows deeper through the network. Early convolutional layers respond to simple patterns such as edges and color contrasts, while deeper layers activate strongly for more complex, class-specific structures—for example, facial contours or object parts. We can visualize these internal responses by forwarding an input image through the network and

AI • Machine Learning • Tech on Instagram: "AlexNet, introduced by Alex Krizhevsky and colleagues in 2012, was one of the first deep convolutional neural networks (CNNs) to achieve breakthrough performance on large-scale image recognition tasks, such as the ImageNet competition. To prevent overfitting—a common problem where a model learns training data too specifically and performs poorly on new data—AlexNet used several key techniques. One major method was dropout, which randomly “turns off” so