I think we should literally stop calling every linear model as an SSM. Mamba2: Sₜ = αₜSₜ₋₁ + kₜvₜᵀ GDN: Sₜ = αₜ(I − βₜkₜkₜᵀ)Sₜ₋₁ + βₜkₜvₜᵀ GDN-2: Sₜ = (I − kₜ(bₜ⊙kₜ)ᵀ)DₜSₜ₋₁ + kₜ(wₜ⊙vₜ)ᵀ GDN family is a gradient step on a local regression loss, not a discretized ODE. Umbrella term should be "linear RNNs", with SSMs as one sub-family.

🧊 Turning one image into 3D used to force a choice: "accurate on the visible surface but no backside" or "complete but misaligned with the input." World Tracing stacks 3D points per pixel into layers, capturing visible and hidden surfaces at once. Title: World Tracing: Generative Pixel-Aligned Geometry Beyond the Visible URL: 🔍 Overview World Tracing represents geometry as an ordered stack of L camera-space 3D points per pixel. Layer 0 is the visible surface, deeper layers record front-to-back intersections with surfaces hidden behind the foreground, unifying faithful reconstruction and generative completion as one layered problem. ❓ Challenges Solved Image-to-3D carried a fundamental trade-off. ・Depth estimators are pixel-accurate but stop at the visible surface ・Generative 3D models are complete but work in canonical frames, so they misalign with the input World Tracing frames this as faithful generation: accurately reconstruct the visible surface while plausibly generating the invisible. 💡 Methodology & Proposed Approach At its core is WT-DiT, a 1.7B-parameter diffusion transformer. ・Three-way factorized attention (layer-wise, ray-wise, global) preserves depth ordering and front-to-back coherence ・A mixed noise schedule handles the asymmetry between layer 0 (image-constrained, reconstruction-like) and deeper, generative layers by varying noise per layer ・Mix-training lets multilayer (3D assets) and single-layer (RGBD photos) supervision train together 🎯 Use Cases ・Text-driven 3D scene editing (training-free closed-form compositing thanks to pixel alignment) ・Geometry-conditioned novel-view video synthesis using complete hidden geometry as memory ・A TRELLIS hybrid that yields faithful meshes which reproject correctly to the input 📊 Experimental Results It outperforms prior work on object, scene, and dynamic benchmarks. ・Object visible-depth MAE 0.0149 (VGGT 0.0257) ・Complete-shape F-score@0.05 0.549 (TRELLIS 0.204) ・Scene MAE 0.0102, and best dynamic-clip Chamfer L2 at 0.0105 #3DGeneration# #ComputerVision#

NEWS: SpaceX is buying a spectrum company to get more airwaves SpaceX has a subsidiary called Starlink Spectrum Holdings. It is buying a company called Tristar License Group outright, every share of it. What it wants is what Tristar owns. Three FCC licences for radio spectrum at 1695 to 1710 MHz. Uplink only, meaning phone to tower, not tower to phone. The licences cover 62 counties across eight states, about 4% of the US population. The deal sits at the FCC under docket 26-187. The public notice is DA 26-747, released 17 July. SpaceX asks for three things beyond the transfer itself. Renew the licences. Push the deadline for actually building ground service out to July 2027. And permanently waive the terrestrial coverage requirements, offering satellite service obligations instead. That last one is the interesting part. This spectrum comes with a duty to build networks on the ground. SpaceX wants to keep the licences and drop the duty. Petitions to deny were due 17 August. Oppositions close 31 August. Replies 10 September. One outlet has written this up. Light Reading reports Tristar paid about $6M for the three licences. Source: FCC Public Notice DA 26-747, WT Docket 26-187, released 17 July 2026. Price from Light Reading, 26 August 2026.

2026, day 227 Good morning from Asia. ‘Iranian Attacks Push Hormuz Shipping Toward Tehran-Controlled Route’ (gCaptain); ‘The Iran War Is Now About Who Blinks First Under Economic Pressure’ (WSJ) - “Trump doubles down on sanctions and a blockade while Tehran bets high oil prices will force Washington to relent”; ‘Trump says he’ll hit Iran hard economically, will soon declare Hormuz ‘US territory’’ (ToI) - “US president urges Americans to accept slightly higher gas prices for the ‘great service’ of preventing Iran from obtaining nuclear bomb, dismisses concerns about conditions aboard aircraft carrier”; ‘US Readies Iran Penalties as Trump Downplays Midterms Impact’ (BBG); ‘Bessent’s Iran Threats Face China Constraint’ (BBG); ‘Two slicks appear in Gulf as huge oil spill off Oman threatens disaster’ (Reuters); ‘‘Everything will stop’ if Hezbollah gives up weapons, US envoy to Beirut says’ (Al Arabiya); ‘The price of dissent: Hezbollah’s grip on Lebanon’s Shiites’ (Ynet); ‘‘Completely unacceptable’: UK condemns Netanyahu for calling Britain an ‘Islamic republic’’ (ToI); ‘Zelenskyy calls for more sanctions on Russian defence supply chains’ (Euractiv); ‘Russia admits new petrol shortages amid ongoing long-range Ukrainian strikes’ (Euronews); ‘Patriot makers hedge on Ukraine production deal as officials question cause of hold-up’ (Defense News); ‘Pentagon inks deals with Boeing, RTX to boost production of SM-3 components’ (Defense News); ‘EU leaders are on holiday. The crises affecting the bloc aren’t.’ (Politico); ‘South Korea's Lee urges talks with North Korea to replace armistice with peace’ (Reuters); ‘Japan defence minister visits contentious Yasukuni Shrine to war dead’ (Reuters); ‘Taiwan passes annual budget after long delay, including drone spending’ (Reuters); ‘Colby: Silence on Chinese aggression is a new strategy based on war fears’ (WT); ‘Chinese magnetic sensor breakthrough may help smartwatch detect submarine 500 metres deep’ (SCMP); ‘The US’ future policymakers are questioning the standard ‘China threat’ playbook’ (SCMP); In geoeconomics, ‘GSA finds China-made tech labeled ‘Made in USA’ in federal procurement program, orders sweeping review’ (Fox); ‘U.S. Urges Apple Not to Buy Chinese Memory Chips’ (WSJ) - “Commerce Secretary Lutnick urges iPhone maker to find other solutions to AI-driven chip supply crunch”; ‘US to tell partners they must pick sides in AI race with China’ (Reuters); ‘China’s 20,000-Mile Solar Trade Route That Battled US Tariffs’ (BBG); ‘China Is Opening the First Regular Cargo Route Through the Arctic’ (WSj); ‘Open-weight Chinese AI models gain foothold in Europe despite Brussels’ trepidation’ (SCMP); ‘Data center backlash echoes fossil fuel politics’ (Axios); ‘Trump's tariffs unevenly reshape American manufacturing’ (Nikkei Asia) - “Activity has risen, but trade policies fail to bring jobs back to sector”; ‘Supertanker Pays Record $4.6 Million to Skip Panama Canal Line’ (BBG); ‘Property downturns rarely last. This one could be different’ (AFR); ‘Think house price falls are bad? The next shock could be far worse’ (AFR) - “Plunging property values have seized the national conversation, but Australia’s economic problems run much deeper – as households are sadly about to learn”; In politics, ‘France’s top court blocks social media ban for under-15s’ (Reuters); ‘Standards watchdog resumes Farage probe as rivals slam needless byelection’ (Guardian); ‘China keeps careful watch on mourning for late premier Zhu Rongji’ (FT); ‘Lula holds slim lead over Flavio Bolsonaro ahead of Brazil election’ (AJ); ‘BBC lawsuit: Channel plans to subpoena Trump family members’ (The Hill); ‘How Much Socialism Is America Willing to Swallow?’ (BBG); In markets, ‘Hanwha, Fincantieri Shares Rise as Trump Opens Navy Shipbuilding to Foreign Yards’ (Reuters); ‘OpenAI upheaval mounts as Sam Altman readies IPO push’ (FT); ‘DOJ, CFTC Investigating Iron Ore Trader Radiant World’s Deals’ (BBG)