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REBEL: A Reinforcement Learning RL Algorithm that Reduces the Problem of RL to Solving a Sequence of Relative Reward Regression Problems on Iteratively Collected Datasets
Initially designed for continuous control tasks, Proximal Policy Optimization (PPO) has become widely used in reinforcement learning (RL) applications, including fine-tuning generative models. However, PPO’s effectiveness relies on multiple heuristics for stable...
Trotting robots reveal emergence of animal gait transitions
A four-legged robot trained with machine learning has learned to avoid falls by spontaneously switching between walking, trotting, and pronking -- a milestone for roboticists as well as biologists interested in animal locomotion.
Hippocrates: An Open-Source Machine Learning Framework for Advancing Large Language Models in Healthcare
Artificial intelligence (AI) is transforming healthcare, bringing sophisticated computational techniques to bear on challenges ranging from diagnostics to treatment planning. In this dynamic field, large language models (LLMs) are emerging as powerful tools capable of...
Meet Electric Atlas: A New Era of Robotics by Boston Dynamics
Boston Dynamics has been at the forefront of robotics innovation for decades, and its latest offering—the fully electric Atlas robot—marks a significant milestone in the field. As it announces the retirement of its hydraulic Atlas, a new era begins with an electric...
Gradformer: A Machine Learning Method that Integrates Graph Transformers (GTs) with the Intrinsic Inductive Bias by Applying an Exponential Decay Mask to the Attention Matrix
Graph Transformers (GTs) have successfully achieved state-of-the-art performance on various platforms. GTs can capture long-range information from nodes that are at large distances, unlike the local message-passing in graph neural networks (GNNs). In addition, the...
GPT-4.5 or GPT-5? Unveiling the Mystery Behind the ‘gpt2-chatbot’: The New X Trend for AI
Artificial intelligence is constantly advancing, and there’s always something new to be excited about. A few moments ago, a cutting-edge AI model called “gpt2-chatbot” was making waves in X’s AI community (Twitter). This new large language model (LLM) has generated a...
