Grok 4.1 Fast's compelling dev access and Agent Tools API overshadowed by Musk glazing

Elon Musk's frontier generative AI startup xAI formally opened developer access to its Grok 4.1 Fast models last night and ...
eLife

Synaptic density and relative connectivity conservation maintain circuit stability across development

The authors have performed a potentially valuable new kind of analysis in connectomics, mapping to an interesting developmental problem of synaptic input to sensory neurons. While the analysis itself ...
IEEE

Global Asymptotic Stabilization Control for Uncertain Nonlinear Systems With Input Quantization and Unknown Output Function

Abstract: In this article, a global output feedback control scheme is developed for a class of uncertain nonlinear systems subject to input quantization and unknown output function. By employing a ...
GitHub

Missing unit tests and mismatched output in audio_utils (e.g., spectrogram, window_function) vs Python tests

I've been digging into the audio preprocessing in transformers.js and noticed an issue: There are currently no unit tests for the audio_utils module in the JS implementation. The output of spectrogram ...
IEEE

Data-Driven Input-Output Control Barrier Functions

Abstract: Control Barrier Functions (CBFs) offer a framework for ensuring set invariance and designing constrained control laws. However, crafting a valid CBF relies on system-specific assumptions and ...
InfoWorld

The best new features and fixes in Python 3.13

Python 3.11 introduced the Specializing Adaptive Interpreter. When the interpreter detects that some operations predictably involve the same types, those operations are “specialized.” The generic ...
PNAS

The Hill function is the universal Hopfield barrier for sharpness of input–output responses

Biological systems can process information without expending energy, and the limit to what can be achieved in this way is known as a Hopfield barrier. We characterize this barrier for the sharpness of ...