CybAI news

arXiv:2406.00120v1 Announce Type: new Abstract: Reward Machines provide an automata-inspired structure for specifying instructions, safety constraints, and other temporally extended reward-worthy behaviour. By exposing complex reward function structure, they enable counterfactual learning updates that have resulted in impressive sample efficiency gains. While Reward Machines have been employed in both tabular and deep RL settings, they have typically relied on a ground-truth interpretation of the domain-specific vocabulary that form the building blocks of the reward function. Such ground-truth interpretations can be elusive in many real-world settings, due in part to partial observability or noisy sensing. In this paper, we explore the…

arXiv:2406.00239v1 Announce Type: new Abstract: Research in neural models inspired by mammal's visual cortex has led to many spiking neural networks such as pulse-coupled neural networks (PCNNs). These models are oscillating, spatio-temporal models stimulated with images to produce several time-based responses. This paper reviews PCNN's state of the art, covering its mathematical formulation, variants, and other simplifications found in the literature. We present several applications in which PCNN architectures have successfully addressed some fundamental image processing and computer vision challenges, including image segmentation, edge detection, medical imaging, image fusion, image compression, object recognition, and remote sensing. Results achieved in these…

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(Maksim-Kabakou/Shutterstock) Databricks today announced the acquisition of Tabular, the commercial outfit behind the Apache Iceberg table format, which competes with Databricks’ own Delta format, paving the way for Databricks customers to enjoy more uniformity and less incompatibilities in their data lakehouse environments. The deal reportedly was valued at more than $1 billion. Open table formats have become the new battleground for control of data lakehouses, those data platforms that blend the scalability and flexibility of data lakes with the ACID transactionality and reliability of traditional data warehouses. Apache Hudi, Apache Iceberg, and Databricks’ Delta have been locked in a three-way…