Search: domain:perplexity.ai #ai

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2025-10-07

22003m Academic

AI breakthrough enables solving Einstein's field equations

www.perplexity.ai/page/ai-breakthrough-enables-solvin-l2E6.UfvSP2IECJcBxEsQg

This new approach to physics-informed neural networks (PINNs) enables robust solutions for stiff and high-dimensional differential equations by combining multi-head architectures and unimodular regularization. The multi-head strategy allows a single neural net to solve an entire family of equations simultaneously, improving generalization and handling noisy or sparse data. Unimodular regularization, leveraging ideas from differential geometry, stabilizes training and allows the system to efficiently uncover unknown or missing physical laws.

Applications are wide-ranging:

  • Astrophysics and Relativity: Direct solution of Einstein Field Equations and the modeling of complex spacetime geometries.

  • Climate Science: Modeling atmospheric dynamics and coupled climate models that involve many scales and stiff systems.

  • Chemical Kinetics and Biology: Simulation and inference in biochemical networks, metabolic pathways, and reaction-diffusion systems with rapid and slow processes intertwined.

  • Engineering: Fluid dynamics (including turbulent and reactive flows), aerodynamics, material deformation, and control systems where traditional solvers fail due to stiffness or sensitivity.

  • Environmental Science: Predictive modeling for air pollution, PM2.5 evolution, and other multi-timescale diffusion-advection problems.

The net result: faster, more accurate, and more versatile model training and simulation for any field that relies on solving or inferring complex differential equations under challenging data or physical constraints.

Refs:

[1] EPINN: Physics-Informed Neural Network with exponential activation functions for solving stiff ODEs

[2] Solving stiff ordinary differential equations using physics informed neural networks (PINNs): simple recipes to improve training of vanilla-PINNs

[3] Stiff neural ordinary differential equations

[4] Stabilize physics-informed neural networks for stiff differential equations: Re-spacing layer

[5] Mixing Differential Equations and Neural Networks for Physics-Informed Learning

[6] Training stiff neural ordinary differential equations with implicit single-step methods

2025-09-24

2175Academic

Qualcomm unveils 18-core Snapdragon X2 Elite processors

www.perplexity.ai/page/qualcomm-unveils-18-core-snapd-MlYSCIA4Qn.RjCEZcSfenQ

Qualcomm's new Snapdragon X2 Elite chips deliver major leaps in performance, efficiency, and AI, featuring up to 18 CPU cores, a 5GHz boost, and 80 TOPS neural processing. Devices with these chips—promising multi-day battery life—are expected in early 2026. However, market adoption faces hurdles, including limited Windows ARM compatibility and entrenched competition from Intel and AMD. Qualcomm is committed to a long-term PC strategy with ambitious sales goals, but success depends on overcoming these software and ecosystem challenges.

21742m Academic

Google study reveals 90% of developers now use AI tools

www.perplexity.ai/page/google-study-reveals-90-of-dev-vMUOJVcJRi.k4mJkXO4RAA

Artificial intelligence has reached near-saturation in software engineering, with over 90% of developers and companies integrating AI tools into their workflows. The adoption is largely fueled by significant productivity gains, improved code quality, and streamlined development processes—AI support ranges from automated code generation to bug fixes and architectural recommendations. However, mass adoption exposes persistent industry-wide challenges, including data privacy and security concerns, unclear returns on investment, integration complexity with legacy systems, and a notable shortage of in-house AI expertise.

Despite daily reliance on AI, trust in automated output remains stubbornly low among developers, who prefer using AI as an assistive resource rather than replacing human judgment. Ethical questions and fears of diminished critical thinking, particularly among junior engineers, add to organizational hesitancy. Entry-level roles are impacted as tech workforce trends show shrinking demand, with job postings for new graduates sharply down since 2022. To manage these challenges, leading firms have crafted frameworks focused on communication, feedback, and cultural readiness. As software engineering moves toward full AI integration, success will increasingly depend on balancing rapid innovation with governance, transparency, and the growth of human expertise

21732m Academic

Gore unveils AI system tracking deadly pollution from 660M sources

www.perplexity.ai/page/gore-unveils-ai-system-trackin-hXmQ5fmKSvGahV.erJ_EFQ

In September 2025, Climate TRACE, led by Al Gore, launched a groundbreaking AI-powered tool that tracks the sources and dispersion of toxic particulate pollution (PM2.5) across 2,500 cities and 660 million assets worldwide. Utilizing 300 satellites, 30,000 ground sensors, and advanced atmospheric models, this system identifies “super emitter” facilities responsible for the largest share of health-threatening pollution. Nearly 1.6 billion urban residents are exposed to emissions mapped by the system, which highlights direct neighborhood impacts and global hotspots like Karachi, Guangzhou, Seoul, and New York City. The data shows that these emissions cause millions of premature deaths annually, linked to severe diseases and chronic health risks. By making pollution visible at a local level and naming its sources, the tool empowers global public health action and accelerates pressure to curb fossil fuel usage, transforming environmental transparency and accountability through technology.

21722m Academic

Workslop

www.perplexity.ai/page/stanford-study-attributes-miss-.mc.leNlQpCpZgk8jzDRiA

The hidden costs of AI-generated work go far beyond initial productivity gains, according to recent research from Stanford University and industry publications. While companies invest heavily in generative AI tools, studies show that up to 40% of employees encounter “workslop” — polished-looking but low-value AI outputs that require nearly two hours per incident to fix. For large employers, this inefficiency translates to millions in lost productivity each year as time is spent correcting, rewriting, or clarifying material.

Beyond finances, misuse of AI strains workplace relationships and trust. Many employees feel annoyed, confused, or offended by poor AI-generated drafts, and recipients often view senders as less creative or capable, harming future collaboration. Technical teams also face increased debugging, refactoring, and security risks, as AI-generated code can introduce hidden flaws and technical debt that destabilize systems over time. The true cost to organizations lies in shifting cognitive and correctional burdens downstream, often masking inefficiencies and eroding team dynamics, undermining the hoped-for benefits of AI productivity.

2025-09-22

21683m Academic

AI weather models deliver faster, more accurate forecasts

www.perplexity.ai/page/ai-weather-models-deliver-fast-IaoPgQn1RZaWl82Ksik3CA

ECMF AI forecasts

AI-powered weather forecasting has reached a global turning point in 2025, driven by new models, technologies, and collaborations among technology leaders and meteorological agencies. The main technological breakthrough is the replacement of traditional physics-based numerical models with deep learning systems capable of processing vast atmospheric data rapidly and producing high-accuracy forecasts with far lower computational costs.

Prominent models include Cambridge’s Aardvark, ECMWF’s AIFS, Google DeepMind’s GraphCast and GenCast, Microsoft’s Aurora, Huawei’s Pangu-Weather, and Climavision’s Horizon AI suite. Aardvark, for instance, can issue global and local forecasts in minutes on a desktop while using just 10% of input data and outperforming the U.S. GFS system. GenCast, published by Google DeepMind, outperformed ECMWF’s own ensemble system on over 97% of targets and demonstrated specific superiority in storm tracking and prediction speed. Microsoft’s Aurora is operational at top European centers and is notable for its ability to forecast not only weather but also other Earth systems like ocean dynamics and air quality.

The main industry players are Google (DeepMind), Microsoft, Huawei, ECMWF, and Climavision, together with key university research groups like Cambridge. Tech giants have made forecasts 1,000 times more energy efficient, requiring only a fraction of supercomputer resources, which democratizes access for developing regions without large computational facilities.

AI now assimilates real-time data from satellites, radars, and ground sensors to generate forecasts almost instantly—crucial for extreme weather warnings and emergency response. Ensemble forecasting using AI, such as that from GenCast and Horizon AI, allows for hundreds of scenario simulations, improving confidence in predicting rare, high-impact events.

The impact extends to agriculture, energy, logistics, and disaster management, leading to safer societies and greater resilience in the face of climate extremes. As research integrates more physics-based knowledge, AI models are also beginning to improve rare event prediction and long-range outlooks, with expanding commercial and humanitarian applications.

2025-07-07

2103Academic

'Mind reader' Centaur AI model accurately predicts human decision making

www.perplexity.ai/page/mind-reader-centaur-ai-model-a-JacQYBd4RrauGmJIJQtnGA

AI model trained on over ten million decisions from psychological experiments that can predict human behavior with unprecedented accuracy, even in entirely new situations it has never encountered before, potentially revolutionizing our understanding of human cognition and decision-making processes.