The quadratic complexity of self-attention constrains Large Language Models (LLMs) in processing long contexts, a capability essential for many advanced applications. Context compression aims to alleviate this computational bottleneck while retaining critical semantic information. However, existing approaches often fall short: explicit methods may compromise local detail, whereas implicit methods can suffer from positional biases, information degradation, or an inability to capture long-range semantic dependencies. We propose AdmTree, a novel framework for adaptive, hierarchical context compression with a central focus on preserving high semantic fidelity while maintaining efficiency. AdmTree dynamically segments input based on information density, utilizing gist tokens to summarize variable-length segments as the leaves of a semantic binary tree. This structure, together with a lightweight aggregation mechanism and a frozen backbone LLM (thereby minimizing new trainable parameters), enables efficient hierarchical abstraction of the context. By preserving fine-grained details alongside global semantic coherence, mitigating positional bias, and dynamically adapting to content, AdmTree robustly retains the semantic information of long contexts.

A flotilla of uncrewed wolf pack drone boats has successfully been used to escort warships in a Royal Navy and Army trial. The Navy said it was a milestone demonstration of how it could utilise such technology in a real-life scenario. With camera and sensor data being fed back to Patrick Blackett, five 7.2m autonomous Rattler boats safely escorted the two ships playing the role of foreign warships during the 72-hour milestone training exercise, it said. The demonstration was a culmination of months of trials by the Navy's Disruptive Capabilities and Technology Office (DCTO) and the Fleet Experimentation Squadron (FXS). Each of the Rattler boats were operated by a two-person team, with one responsible for piloting the drone and the other monitoring and operating onboard systems, as well as helping to manage live data streams.

Fox News contributor Brett Velicovich demands U.S. defenses'adapt' to modern warfare after Ukraine's drone strikes on'The Story.' As sixth-generation fighter programs ramp up, military insiders are divided over whether future warplanes need pilots at all. The Pentagon is pouring billions into next-generation aircraft, pushing the boundaries of stealth and speed. But as America eyes a future of air dominance, one question looms large: Should Americans still be risking their lives in the cockpit? Autonomous drones backed by AI are progressing faster than many expected, and that has some defense leaders rethinking the role of the pilot.

Two people reportedly are injured after a Navy parachutist crash-landed during a performance in San Francisco. U.S. Naval officials, on Monday, identified the two crew members who died last week in a Navy jet crash near Mount Rainier in Washington state, as two 31-year-old aviators from California. The fighter jet pilots were identified as Lt. Cmdr. Evans and Wileman died when their EA-18G Growler jet from the Electronic Attack Squadron out of Whidbey Island Naval Air Station crashed on a mountainside east of Mount Rainier on Tuesday afternoon. The wreckage of the jet was located resting about 6,000 feet up in a remote, steep and heavily-wooded area, and until Sunday, the status of the crew remained a mystery without a site assessment of the debris area.

In the arid tech sphere of semiconductor manufacturing, one hardback book-sized processor stands out: Nvidia's H-100. On Friday, the Santa Clara, California, company surpassed 2tn in valuation. Where it goes next will be down to a chip named after "Amazing Grace" Hopper, a US navy rear admiral who became instrumental in the development of design and implementation of programming languages. Nvidia supplies approximately 80% of the global market in chips used in AI applications. The company's H-100 chips – the H is for Hopper – are now so valuable they have to be transported by armored car, the Wall Street Journal reported on Friday, and demand is so great that some customers are waiting as long as six months to receive it.

AI software can land a plane on a carrier deck better than you. Over 5,000 men and women crew each of America's 11 aircraft carriers, but the U.S. Navy's counting on AI to help them fight China. AI will bring carrier planes in for landings, fly unmanned tankers with fuel for combat planes, and even analyze the bug juice in the chow line. Night carrier landings are dangerous feats of combat aviation. Americans think of the "Top Gun" movies starring Tom Cruise as Maverick, an intrepid Navy pilot who can land a 32,000-lb.

Fighting fires was always dangerous. But with climate change, there have been more wildfires, which means even more risky rescue missions for local firefighting squads. That's why multiple different companies and teams of scientists are working to develop robots that can scope out burning buildings before human firefighters have to enter. The latest entrant is FireBot, a remote-controlled robot that can withstand temperatures as high as 650 degrees Celsius. At that scalding temperature, a firefighter wearing a protective suit can only withstand about 15 minutes of exposure.

Jets can be flown by A.I. and can even take off, land and participate in dogfights. It's no secret at this point that AI is taking over many industries fast, and it certainly has its positives and negatives. Some are concerned with how using this technology will impact jobs for humans, while others are thrilled to see how tasks will get done much more efficiently. CLICK TO GET KURT'S FREE CYBERGUY NEWSLETTER WITH SECURITY ALERTS, QUICK TIPS, TECH REVIEWS AND EASY HOW-TO'S TO MAKE YOU SMARTER One field that is using AI to its fullest capabilities is the U.S. Navy. Our military's defense mechanisms have improved enormously in the 21st century; however, they have never used technology quite like this.

From TikTok to Huawei routers to DJI drones, rising tensions between China and the US have made Americans--and the US government--increasingly wary of Chinese-owned technologies. But thanks to the complexity of the hardware supply chain, encryption chips sold by the subsidiary of a company specifically flagged in warnings from the US Department of Commerce for its ties to the Chinese military have found their way into the storage hardware of military and intelligence networks across the West. In July of 2021, the Commerce Department's Bureau of Industry and Security added the Hangzhou, China-based encryption chip manufacturer Hualan Microelectronics, also known as Sage Microelectronics, to its so-called "Entity List," a vaguely named trade restrictions list that highlights companies "acting contrary to the foreign policy interests of the United States." Specifically, the bureau noted that Hualan had been added to the list for "acquiring and ... attempting to acquire US-origin items in support of military modernization for [China's] People's Liberation Army." Yet nearly two years later, Hualan--and in particular its subsidiary known as Initio, a company originally headquartered in Taiwan that it acquired in 2016--still supplies encryption microcontroller chips to Western manufacturers of encrypted hard drives, including several that list as customers on their websites Western governments' aerospace, military, and intelligence agencies: NASA, NATO, and the US and UK militaries.

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. The U.S. Navy sailed its first drone boat through the strategic Strait of Hormuz on Wednesday, a crucial waterway for global energy supplies where American sailors often faces tense encounters with Iranian forces. The trip by the L3 Harris Arabian Fox MAST-13, a 41-foot speedboat carrying sensors and cameras, drew the attention of Iran's Revolutionary Guard, but took place without incident, said Navy spokesman Cmdr. Two U.S. Coast Guard cutters, the USCGC Charles Moulthrope and USCGC John Scheuerman, accompanied the drone.