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SpaceXAI’s Grok programming tool was uploading its users’ entire codebase to cloud storage

SpaceXAI's Grok Build AI coding tool was spotted uploading users' entire codebases to Google Cloud before it was reported, and the company turned it off. The Register reports that Cereblab published findings on Monday showing how the Grok Build CLI was packaging and uploading entire code repositories, "including files it was told not to open and secrets deleted from history," significantly more data retention than similar tools like Claude Code.

  • Cereblab found Grok Build CLI uploaded entire code repos, including forbidden files and deleted secrets.
  • SpaceXAI disabled codebase upload and promised to delete all uploaded data.
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AWS will now watch Microsoft’s cloud for you

AWS announced an expansion to Security Hub to monitor Azure resources, along with new tools for protecting AI workloads, including GuardDuty AI Protection, AI-powered investigations, and an AI inventory.

  • Security Hub now natively monitors Azure VMs, containers, functions, and identities. No platform fee. 30-day free trial.
  • GuardDuty AI Protection detects threats to Bedrock and SageMaker: anomalous invocations, prompt injection, and cost harvesting.
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We scored 1,018 real-world AI prompts. Robustness averaged 31/100

An evaluation of 1,018 real AI prompts reveals an average score of 54/100, but robustness averages only 31.5, and 96% of prompts have their weakest dimension in robustness. Only 10.5% reach 75 (the production bar). The report highlights the common 'happy path' trap in prompt engineering and offers simple improvements.

  • Robustness is the lowest-scoring dimension, averaging 31.5/100
  • 96% of prompts have robustness as their weakest dimension
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Musk promises purge after Grok Build caught sending repos to the cloud

The researcher who exposed Grok Build uploading users' entire repositories to cloud storage says the transfers have stopped after a server-side change. Musk has promised to delete all previously uploaded user data. However, the researcher says the privacy command was not the actual fix.

  • Grok Build uploaded entire Git repos including deleted secrets even when instructed not to open files.
  • xAI's server-side flag disable_codebase_upload: true stopped the uploads.
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What is Meta Prompting and How does it work?

Meta prompting is a technique where a prompt is used to create, improve, or control another prompt. It shifts the model from direct task execution to prompt design, improving consistency and scalability for repeated tasks.

  • Meta prompting asks the model to design a reusable prompt, template, checklist, or workflow before completing the task.
  • The four-step workflow: define goal, add constraints, generate reusable prompt, test and refine.
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Show HN: An open-source Claude skill that stops AI building the wrong app

An open-source Claude skill called vibe-check, created by a seasoned product manager, helps beginners go from a vague idea to a buildable blueprint, ensuring they build the right thing rather than just building it right. It includes problem discovery, idea validation, user experience mapping, tech stack recommendations, growth loop design, and produces a comprehensive plan document.

  • vibe-check is an open-source skill for AI coding tools that guides complete beginners from a vague app idea to a buildable blueprint.
  • Developed by Amer Arab, a 12-year product manager focused on 0-to-1 product discovery.
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Agent Shell – persistent AI dev boxes from shell host running since 2009

Agent Shell is a hardened Linux box you hand your AI agent root on, over SSH or browser. gVisor-sandboxed so even root inside cannot touch the host, preloaded with agents like borg, Claude Code, Codex, Gemini, and live monitoring. Built on infrastructure operated since 2009.

  • Hardened Linux server with root access for AI agents
  • gVisor sandbox isolates agent from host
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Scaling UX testing with Amazon Nova Act: A new approach to user flow analysis

Using generative AI enables parallel execution of comprehensive user flow testing at scale. This solution demonstrates how to build a cloud-deployed UX testing platform that automatically generates test scenarios from documentation, executes user flows at scale using the intelligent navigation capabilities of Nova Act, and provides actionable insights through automated analysis.

  • Amazon Nova Act uses vision to intelligently navigate interfaces, mimicking human testers.
  • Automated test scenario generation from documentation reduces manual script writing.
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Design as the Enterprise Supply‑Chain Moat

As AI and optimization become commoditized, traditional supply chain planning no longer provides competitive advantage. Research shows most organizations lack visibility into their Tier 1 suppliers. Based on an Emerj podcast series, this article explores how scenario-driven modeling, AI-accelerated scenario analysis, and unified design environments enable better decision-making under volatility.

  • Design, not planning, is the new competitive battleground; organizations must architect the decision environment rather than rely on AI-generated decisions.
  • Scenario-driven modeling allows evaluation of multiple future configurations, enhancing strategic flexibility.
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A Longitudinal Study of AI Adoption in an Enterprise

A longitudinal study of an enterprise '2x mandate' to double merged pull requests per engineer found that throughput eventually reached 2.09x the pre-mandate baseline, with gains linked to AI adoption and usage intensity. Code review was restructured, with automated review overtaking human review and reviewer load doubling.

  • In a panel of 802 developers and 196,212 pull requests, per-capita throughput doubled to 2.09x baseline.
  • Gain attributed to AI adoption and usage, not the mandate itself, via staggered difference-in-differences.
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The Ramanujan Challenge for AI

Researchers released a set of formulas for fundamental mathematical constants designed to evaluate AI mathematical skills. The problems include proven (temporarily encrypted) and unproven formulas, testing AI's reasoning capabilities.

  • New benchmark features formulas for constants like π, e, and Catalan's constant.
  • Some formulas have known proofs that are encrypted; others are unproven.
In-site article

Aevum – Free AI RPG engine for Claude with persistent factions and economy

Aevum Realm Architect is a free, LLM-powered RPG engine created by Arcanum RPGs. Players start as a serf with one copper piece and rise through trade, war, diplomacy, and intrigue to claim a throne. It features deterministic combat, a tag-based economy, and a strict feudal hierarchy enforced by the Deference Engine. Runs on ChatGPT, Claude, or Gemini.

  • Aevum Realm Architect is a free AI RPG playable on ChatGPT, Claude, and Gemini.
  • Includes a nearly 30,000-word atlas with five historically-inspired nations, named trade routes, and seasonal economics.
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Why Claude uses the browser like a drunk intern, and how to fix it

Browser agents that operate via pixel-level UI interactions are slow and unreliable. Pluno's approach is to have agents learn product-specific skills (API paths, workflows) from browser sessions, then execute tasks directly via code, achieving much higher speed and reliability.

  • Browser agents are slow because they use the wrong interface: pixels instead of structured APIs.
  • Pluno builds skills from observing browser interactions, allowing agents to bypass the UI and use the underlying API directly.
In-site article

High-integrity HTML extraction for AI agents (with native MCP)

Mission is a fast, robust HTML parser and CSS selector engine written in Rust, with zero dependencies, no network layer, crash immunity, and built-in MCP tool support for AI agents to extract structured data locally.

  • Zero dependencies, no network layer, safe for untrusted HTML
  • Built-in MCP server for AI agent local data extraction
In-site article

I source-reviewed 200 self-hosted AI tools for tenant isolation; 78 leaked

A security researcher source-reviewed 200+ multi-tenant AI and SaaS products for cross-tenant data exposure. 78 products had the same flaw: write endpoints had authorization checks, but adjacent read endpoints did not. The post explains the pattern, lists fixed products, and gives advice.

  • 200+ products audited; 78 had cross-tenant data leaks.
  • Flaw pattern: write endpoints check ownership, read siblings don't.
In-site article

Don't let an AI chatbot pick your password, ever

Are AI-generated passwords truly random? Research suggests AI passwords are far less secure than you might think.

  • AI chatbots like Claude, ChatGPT, and Gemini produce passwords with noticeable patterns, reducing randomness.
  • In tests, AI-generated passwords showed high repetition rates and omitted many characters.
In-site article

Google’s Demis Hassabis says it’s time for a global AI watchdog — led by the US

Demis Hassabis, CEO of Google DeepMind, proposes a global AI watchdog with the power to halt dangerous frontier models. He argues the US should lead the effort and hopes to establish the organization by year-end.

  • Hassabis proposes an AI regulator modeled after FINRA, composed of independent experts and open-source representatives.
  • The body would evaluate frontier models pre-release and coordinate industry-wide slowdowns if risks are too high.
In-site article

The Open Source Agent Toolkit in 2026

This article examines the open source toolkits for building AI agents in 2026, analyzing key layers like orchestration, memory, protocols, and browser control, and offering strategies for choosing the right tools based on constraints such as latency, audit trails, and language stack.

  • Open source agent toolkits have solved many problems by 2026, but often in multiple incompatible ways.
  • Choosing tools requires identifying dominant constraints: latency, audit trail, model portability, or language stack.
In-site article

"Is AI Making Faculty More Likely to Retire?"

A professor interviewed by the Chronicle of Higher Education asserts that AI is one of the top four reasons faculty are rushing to retire, citing untenable work conditions, institutional chaos, political assault, and AI's embrace across academia as part of a larger effort to dismantle democratic higher education.

  • AI is among four key drivers pushing faculty to retire early, alongside worsening work conditions, institutional instability, and right-wing political attacks.
  • Widespread adoption of AI by students, faculty, and administrators is eroding faculty autonomy and the core of education.
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Synthetic Sincerity review – Marc Isaacs’ AI interrogation grapples with identity and existence

A combination of fact and fiction leaves the celebrated documentarian’s puzzling project about software training wanting for depth. Marc Isaacs’ new film is a curious, intriguing, semi-sincere affair that I couldn’t make friends with. It is an odd, shallow piece of work about artificial intelligence that is itself exasperatingly artificial, a self-aware docudrama hybrid.

  • Marc Isaacs’ new film Synthetic Sincerity is a self-aware docudrama hybrid about AI. It pretends to license characters from his previous documentaries to a fictional AI lab. The film features actors and scripted conversations with an AI avatar. The review criticizes it as shallow and lacking depth in exploring AI creation.
In-site article

Vizro: Upload spreadsheets. Get answers in minutes

Vizro is an AI-powered iOS app that turns CSV or Excel files into interactive dashboards in minutes. It offers automated analysis, natural language queries, story mode, and easy sharing, all for $9.99/month.

  • Upload a spreadsheet and AI automatically generates dashboards, charts, and KPIs.
  • Ask questions in plain English and get answers grounded in your data.
In-site article

AI coding agents should optimize for less owned code

As AI makes code generation cheap, costs shift from generation to ownership. To avoid technical debt, coding agents need an open-source intelligence layer that helps them reuse trusted components before generating new code.

  • Most modern software is assembled from existing open-source components; new code is a small fraction.
  • Current AI systems reward code generation but ignore maintenance costs, leading to technical debt.
In-site article

Learning from experience instead of curated datasets

This article contrasts learning from curated datasets with learning from raw experience. It shows that SGD and its variants absorb noise in online data streams, failing to learn only predictable components. The IDBD algorithm, however, can selectively assign credit and learn only useful associations. Extensions to neural networks (NetworkIDBD) demonstrate similar advantages on the NoisyMNIST task. The authors argue that better credit assignment algorithms are needed for online continual learning.

  • Experience-based data streams contain both predictable and unpredictable components, unlike curated datasets.
  • SGD-based algorithms tend to absorb noise, failing to distinguish predictable targets.
In-site article

Mistral AI Releases Robostral Navigate: An 8B Model Enabling Robots to Navigate Complex Environments Using a Single RGB Camera

Mistral AI introduced Robostral Navigate, an 8B embodied navigation model. It moves robots from a plain-language instruction using only a single RGB camera, with no LiDAR or depth sensors. The model reaches 76.6% success on R2R-CE validation unseen through a pointing method, prefix-caching training, and CISPO online reinforcement learning.

  • Robostral Navigate is Mistral AI's first 8B model for embodied navigation.
  • Achieves 76.6% success on R2R-CE validation unseen using only a single RGB camera.
In-site article

What Anthropic's latest AI discovery does–and doesn't–show

Anthropic's new research reveals a hidden 'J-space' inside LLMs where words influence reasoning without appearing in output, offering insight into model decision-making but also raising questions about anthropomorphization.

  • Anthropic discovered a hidden internal space (J-space) in LLMs filled with words that affect reasoning but don't appear in output.
  • The research uses brain-like analogies, which are controversial but convenient for understanding.
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Show HN: Benchmark your eng team's AI agent maturity in 5 minutes

A free benchmarking tool to evaluate your engineering team's AI agent maturity in 5 minutes. Based on hundreds of discussions with engineering leaders, it uses a 1-5 scale covering from suggestions only to fully autonomous multi-hour workflows.

  • Data collected from hundreds of discussions with engineering leaders
  • Free tool, takes about 5 minutes to complete
In-site article

The Lies They're Telling Towns and Tribes About the Benefits of AI Data Centers

This article debunks common lies from AI data center proponents, such as claims of innovation and job creation. It argues that these projects primarily bring pollution, water strain, and few local jobs, and criticizes media and corporate think tanks for misleading communities. The author warns that broken regulations make it difficult to hold tech companies accountable.

  • AI data centers do not bring the promised influx of innovative businesses and jobs; most jobs are temporary construction. They also increase local electricity costs and strain water resources.
  • Companies target poorly regulated areas, including tribal lands, to bypass oversight. The long-term local benefits are minimal.
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Show HN: Rqshc – A C++/x64 assembly image compressor with its own RQI format

RQSHC V64I is a native Windows image compression research tool that uses a proprietary RQI format. It supports PNG, PPM, BMP input and achieves ~33% size reduction with very high SSIM. The core is built with C++17 and x64 assembly with AVX2 optimizations. Free for non-commercial use.

  • RQSHC is a Windows-only image compressor using its own RQI file format.
  • Achieves average 33% size reduction with SSIM ~0.9995 in tests.
In-site article

Copyright law is now the biggest battleground in Australia's AI boom

Copyright law is a key obstacle for AI companies investing in Australia. Creators accuse AI firms of using their work without permission, while tech groups argue the law blocks investment. The government considers multiple reform options but has not decided.

  • Australia's copyright law may expose AI companies to infringement risks as training AI models involves copying large amounts of copyrighted material.
  • Creators and tech groups disagree on copyright reform: creators want compensation, while tech groups argue reform could attract investment.
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A Comprehensive Survey and Systematic Real-World Evaluation of Embodied Vision-and-Language Navigation

This survey systematically reviews the state of the art in embodied Vision-and-Language Navigation (VLN), organizing methods along two orthogonal dimensions: action paradigms (hierarchical vs. monolithic) and model paradigms (discriminative vs. generative). The authors conduct a real-world evaluation on a physical robotic platform across ten diverse scenes, revealing a significant simulation-to-real gap: a monolithic RGB-only method achieves 61% success in simulation but drops to 22% in the real world, while a hierarchical framework attains 51% real-world success. Key challenges in perception, decision-making, and control are highlighted.

  • Proposes a two-dimensional taxonomy for VLN methods: action paradigms (hierarchical/monolithic) and model paradigms (discriminative/generative).
  • Systematic real-world evaluation on a physical robot across ten scenes shows substantial sim-to-real gap.
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Maximizing Human Efficiency in Large-Scale Robot Post-Training via VLAC-Cut Guided Pipeline

This paper proposes a human-efficient post-training pipeline that enables a small number of human operators to supervise multiple robots through specialized division of labor and automatic trajectory segmentation using VLAC-CUT. Validated on four real-world manipulation tasks, the final policies achieve 80%-95% success rates and improve task throughput by 1.7x-4.2x over the base model.

  • Proposes a human-efficient post-training pipeline with role specialization to reduce task switching and training costs.
  • Introduces VLAC-CUT, an automatic trajectory segmentation tool for filtering useful rollout data.
In-site article

A Risk-Field Enhanced Closed-Loop Digital Twin Framework for Autonomous Driving Safety Validation

This paper proposes a risk-field enhanced closed-loop digital twin framework for safety validation of autonomous driving systems. The framework integrates physical data acquisition, virtual reconstruction, risk-aware scenario generation, and algorithm evaluation, using a driving risk field as a unified intermediate representation to identify high-risk scenarios and provide safety guidance for reinforcement learning policies. Experiments show the method improves targeted validation and interpretability, but its effectiveness is bounded by model fidelity and sim-to-real transfer.

  • Proposes a risk-field enhanced closed-loop digital twin framework
  • Driving risk field as unified representation for multiple risks
In-site article

OmniSCS: Omni Safety-Critical Scenario Synthesis for Autonomous Driving via a Fully Editable Driving World

OmniSCS proposes an innovative system for generating photorealistic safety-critical scenarios (SCS) with high physical fidelity, enabling closed-loop simulation testing. It consists of a Fully Editable Driving World Construction module and an SCS Synthesis module that preserve data fidelity during scene editing. Experiments on nuScenes, Waymo, and KITTI datasets show that OmniSCS outperforms state-of-the-art methods in edited scene fidelity and supports real-time (13Hz) closed-loop testing, providing a safer and more cost-effective solution for autonomous driving development.

  • OmniSCS includes two core modules: Fully Editable Driving World Construction and SCS Synthesis.
  • It maintains high fidelity in agent appearance and background during scene editing using dual-strategy agent reconstruction and depth-refinement background reconstruction.
In-site article

LLM-Centric Agentic AI for UAV Swarms: Architecture, Enabling Technologies, and Open Problems

UAV swarms have potential in SAR and environmental monitoring but face limitations in situational awareness, connectivity, and cybersecurity. This paper proposes LAUS, an LLM-centric agentic AI framework integrating perception, memory, reasoning, and action for adaptive swarm behavior. It reviews enabling technologies, analyzes threats like Priority Manipulation Attacks, and identifies open challenges including hallucination-resistant reasoning, onboard LLM deployment under SWaP constraints, and standardized security benchmarks.

  • Proposes LAUS, an LLM-centric agentic AI architecture for autonomous UAV swarms.
  • Reviews enabling technologies: edge computing, 5G/6G, multimodal intelligence, and cybersecurity.
In-site article

SWIFT: A Small-World Interaction Framework for Flow-Aware Trajectory Prediction in Autonomous Driving

Researchers propose SWIFT, a unified framework integrating small-world networks with traffic flow theory for trajectory prediction in autonomous driving. It introduces structural inductive biases via a Small-World Interaction Network and a Flow Regime Encoder, outperforming baselines on nuScenes, MoCAD, and NGSIM datasets, with improved generalization and robustness.

  • SWIFT combines small-world networks and traffic flow theory for structured trajectory prediction.
  • The framework includes a Small-World Interaction Network and a Flow Regime Encoder for adaptive interactions.
In-site article

Saturation-Aware Robust Trajectory Optimization for Reusable Launch Vehicles via Differentiable Physics

A new differentiable physics framework for robust trajectory optimization of reusable launch vehicles introduces a Differentiable Particle Tube Control (DPTC) scheme that integrates actuator saturation constraints. Monte Carlo simulations show improved robustness over conventional methods by proactively managing performance trade-offs.

  • DPTC scheme optimizes both nominal trajectory and feedback policy using end-to-end backpropagation.
  • Hard actuator projection operators embedded into computational graph prevent saturation-induced instability.
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Learning High-Level Decision Making with an Interaction-Aware Attention-Based Network in Autonomous Driving

Proposed DecisionPerceiver architecture projects dynamic agent features into a fixed-size latent space, regulating granularity with latent queries, improving scalability. Evaluated across three driving scenarios shows consistent gains and generalization.

  • DecisionPerceiver handles dynamic inputs via fixed-size latent space, avoiding quadratic complexity.
  • Finer discretization of action set enhances interaction awareness gains.
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RoboNav-Arm: Agentic AI-Driven Navigation and Obstacle Avoidance for Robotic Manipulator in Cluttered Environments

A new framework called RoboNav-Arm enables robotic manipulators to safely navigate and avoid obstacles in cluttered environments using agentic AI. It combines real-time obstacle detection, semantic reporting, central coordination, and adaptive motion planning, tested in Gazebo simulations.

  • RoboNav-Arm uses an environment module for real-time obstacle detection and 3D localization.
  • A central coordination module manages tool invocation and task monitoring.
In-site article

EgoSteer: A Full-Stack System Towards Steerable Dexterous Manipulation from Egocentric Videos

EgoSteer is a full-stack system that enables steerable dexterous manipulation by pre-training a VLA model on 9.6K hours of egocentric human videos and post-training on robots. It achieves robust execution of free-form instructions across 40+ tasks, with failure recovery and few-shot adaptation to long-horizon tasks like box folding at 75%+ success.

  • EgoSteer scales dexterous VLA pre-training from 9.6K hours of egocentric human videos with 9x throughput improvement.
  • The system integrates EgoSmith data pipeline, unified robot stack, and world-model-enhanced VLA.
In-site article

Compression Asymmetry and Trajectory Binding in Noise-Anchored Diffusion Inversion

Real-image diffusion inversion faces a quality-cost trade-off. This paper reveals two mechanisms: element-wise compression asymmetry and trajectory binding, leading to Noise-Anchored Reverse Correction (NARC), a training-free method that outperforms baselines with drastically reduced storage.

  • Diffusion noise shows element-wise compression asymmetry: int8 full-dimensional anchors preserve reconstruction, while low-dimensional subspaces fail.
  • Inversion is trajectory-bound and requires both matched forward anchor and trained score network.
In-site article

Towards Real-World Wearable Motion Reconstruction

A paper accepted at ECCV 2026 presents a new approach to wearable motion capture that works with any combination of consumer devices like smartphones and smartwatches, introducing the WHIP model and a comprehensive dataset spanning 50 activities, along with a systematic study of sensor complementarity.

  • Proposes WHIP model for full-body motion reconstruction from arbitrary wearable sensor subsets
  • Introduces large-scale multi-modal dataset with consumer-grade sensors and ground-truth 3D motion across 50 activities
In-site article

A Generalized Deep Non-negative Matrix Factorization Approach for SAR Automatic Target Recognition

This paper proposes a Generalized Deep Non-negative Matrix Factorization (G-DNMF) method for SAR automatic target recognition. It overcomes the error accumulation and local optima problems of layer-by-layer decomposition in existing DNMF methods by deriving globally optimal update rules using the Lagrangian multiplier method. Experiments on MSTAR and OpenSARship datasets show improved stability and recognition performance over existing DNMF algorithms.

  • Proposes G-DNMF to avoid layer-by-layer decomposition issues.
  • Uses Lagrangian multiplier method for global optimality.
In-site article

Time Imprint: Learning Time-Aware Representations in Multi-Modal Knowledge Graphs

Multi-Modal Knowledge Graphs (MMKGs) enrich entities with modalities like text and images, but entities with highly similar multi-modal features remain hard to distinguish. Temporal information can serve as an additional modality for disambiguation, yet existing approaches rarely treat time as a separate modality due to sparse temporal semantics and noise from multiple timestamps. This paper proposes Time Imprint, a framework that treats time as an entity-level modality and aligns temporal, textual, and visual representations via a three-view contrastive objective. It also designs a compact timestamp subset selection with attention pooling to balance specificity and robustness. Experiments on three MMKG benchmarks show state-of-the-art link prediction, with Hits@1 improvements up to 6.07% overall and 58% on the top-1% ambiguous samples.

  • Treats time as a separate modality in multi-modal knowledge graphs with three-view contrastive alignment.
  • Addresses multi-timestamp ambiguity via compact timestamp subset selection and attention pooling.
In-site article

Knowledge-Constrained Shape Optimization with a Mixture-of-Experts Neural Operator for High-Confidence Design

This paper proposes a knowledge-constrained shape optimization framework that translates expert knowledge and user intent into quantifiable parameters for DFFD-based deformation operators. A Mixture-of-Experts Neural Operator (MoE-NO) improves drag prediction and trend consistency on heterogeneous datasets. Experiments show MoE-NO achieves 1.16% MAPE and 94.34% trend accuracy, with CFD-validated drag reductions of 4-10%.

  • Proposes knowledge-constrained shape optimization framework translating expert constraints into quantifiable parameters
  • Develops Mixture-of-Experts Neural Operator (MoE-NO) for improved prediction on heterogeneous datasets
In-site article

ReflectWorld-MM: An Entity-Oriented Multi-Media Memory System for Open-Ended Video Streams

A new AI system called ReflectWorld-MM enables assistants to continuously process and remember open-ended video streams by organizing memory around persistent entities rather than frames, achieving state-of-the-art results on six benchmarks.

  • ReflectWorld-MM organizes video memory around entities, not frames, improving long-term tracking.
  • The system has three components: perception front-end, hierarchical long-term memory, and a real-world realization.
In-site article

RSLoRA: Training-free Rank Allocation for LoRA via Representational Sensitivity Probing

RSLoRA is a training-free, gradient-free method for allocating LoRA ranks based on activation-space geometry. It introduces virtual representational probing to identify high-sensitivity layers, outperforming state-of-the-art allocators like AdaLoRA and GoRA.

  • RSLoRA eliminates the need for iterative training-time adjustments and backward gradients.
  • It uses Effective Rank and Fréchet Distance to measure manifold displacement from structured low-rank noise.
In-site article

Cross-Subject Modeling for Widefield Calcium Imaging via Atlas-Aligned Spatiotemporal Tokenization

WiCAT, a multi-subject model using self-supervised pretraining, outperforms single-session models and enables zero-shot behavior decoding on unseen subjects in widefield calcium imaging.

  • WiCAT introduces an atlas-grounded tokenization scheme without session-specific components, learning globally shared spatiotemporal representations.
  • The pretrained model supports lightweight downstream decoding and transfers across subjects, tasks, and datasets.
In-site article

Unified Backbone Refinement for Diffusion Models via Internal-Latent Analysis

Researchers propose DUNE, a training-free framework that refines diffusion models by detecting and suppressing early-stage fluctuations in deep latents, reducing artifacts and hallucinations while improving fidelity across both U-Net and Transformer backbones.

  • DUNE identifies and mitigates artifacts by analyzing abrupt early-stage fluctuations in deep latent variables.
  • The framework operates without retraining, using an EMA-based criterion for detection and backbone-specific suppression.
In-site article

Cost of Reasoning in non-English Languages: A Case Study on Japanese

This paper investigates the feasibility of training a reasoning language model in Japanese. By applying GRPO to a Japanese continually pretrained model based on Qwen-3-Swallow-8B, the authors find that reasoning-language control is achievable, yet performance at best matches English-reasoning baselines. On Japanese cultural benchmarks, the model performs worse, indicating that reasoning in Japanese does not automatically improve culturally relevant tasks.

  • Explores training a reasoning model to reason in Japanese.
  • Developed a Japanese-reasoning variant of Qwen-3-Swallow-8B using GRPO.
In-site article

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