Artificial Intelligence

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Stonehenge just got stranger: Archaeologists confirm massive man-made ring of pits underground

New research has confirmed that a vast ring of Neolithic pits, more than a mile wide and over 4,000 years old, was deliberately engineered near Stonehenge, not formed by nature. Using cutting-edge dating and soil-analysis techniques, researchers argue it reflects an ancient belief system inscribed into the land itself. The discovery suggests Stonehenge’s builders shaped […]

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How We Learn Step-Level Rewards from Preferences to Solve Sparse-Reward Environments Using Online Process Reward Learning

In this tutorial, we explore Online Process Reward Learning (OPRL) and demonstrate how we can learn dense, step-level reward signals from trajectory preferences to solve sparse-reward reinforcement learning tasks. We walk through each component, from the maze environment and reward-model network to preference generation, training loops, and evaluation, while observing how the agent gradually improves

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Google DeepMind Researchers Introduce Evo-Memory Benchmark and ReMem Framework for Experience Reuse in LLM Agents

Large language model agents are starting to store everything they see, but can they actually improve their policies at test time from those experiences rather than just replaying context windows? Researchers from University of Illinois Urbana Champaign and Google DeepMind propose Evo-Memory, a streaming benchmark and agent framework that targets this exact gap. Evo-Memory evaluates

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