We deliver AI algorithm tutorials and the latest news, curated by a team of researchers from Peking University, Shanghai Jiao Tong University, Central South University, and leading AI companies such as Huawei, Kuaishou, and SenseTime. Join us in the AI alchemy—making life better!
This article explains how to apply a Deep Convolutional GAN in PyTorch to create realistic synthetic images of marine plastic, addressing dataset scarcity, detailing the network architecture, training procedure, and showing loss curves and generated samples.
This article explains the end‑to‑end deep‑learning pipeline for speech‑to‑text, covering audio digitization, preprocessing with librosa, conversion to Mel spectrograms and MFCCs, data augmentation, a CNN‑RNN architecture, CTC loss, decoding strategies and evaluation with word error rate.
This article explains the principles of variational autoencoders, starting with dimensionality reduction techniques such as PCA and standard autoencoders, highlighting their limitations for data generation, and then detailing VAE's regularized latent space, variational inference, re‑parameterization, and loss formulation.
This article walks through the design of Compact Transformers, explaining scaled dot‑product self‑attention, positional embeddings, multi‑head attention, and Vision Transformer architecture, and provides full PyTorch code so readers can train lightweight CV and NLP classifiers on a single PC.
This article explains how optimizers and learning‑rate schedulers work, how to configure their hyperparameters and parameter groups, and how to apply differential learning rates and adaptive schedules in PyTorch and Keras to improve model training and transfer‑learning performance.
This article surveys deep‑learning image captioning, detailing the image encoder, sequence decoder, attention mechanisms and multimodal designs, comparing encoder‑decoder, detection‑backbone, transformer and dense captioning architectures, and explaining generation strategies and BLEU evaluation.
This article walks through a complete Python workflow that loads the 20 Newsgroups dataset, preprocesses the documents, vectorizes them with TF‑IDF, groups them using KMeans, reduces dimensions with PCA, and visualizes the resulting clusters, illustrating each step with code and plots.
This article explains the fundamental gradient‑descent optimizers used in neural networks—SGD, Momentum, RMSProp, Adam and their variants—illustrates loss‑surface challenges such as local minima, saddle points and ravines, and shows how techniques like mini‑batching, momentum, adaptive learning rates and scheduling address these issues.
This article demonstrates how to implement DropBlock in PyTorch, explains why Dropout fails on image data, details the gamma calculation and mask generation, and shows visual comparisons that illustrate the superiority of contiguous region dropping over random pixel dropout.
The article explains the principle behind Batch Normalization, why it is essential for training deep neural networks, how it standardizes activations, the role of learnable scale and shift parameters, the computation steps during training and inference, and discusses placement strategies within a model.
