Mean Flow Policy Optimization
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Mean Flow Policy Optimization
Announce Type: replace Abstract: Diffusion models have recently emerged as expressive policy representations for online reinforcement learning (RL). However, their iterative generative processes introduce substantial training and inference overhead. To overcome this limitation, we propose to represent policies using MeanFlow models, a class of few-step flow-based generative models, to improve training and inference efficiency over diffusion-based RL approaches.
Deep learning four decades of human migration
Abstract Human migration is a fundamental driver of global demographic change, shaping population structure, labour markets and social policy across countries1,2,3. Although long-term migration patterns are often linked to economic development4, they can shift rapidly in response to shocks such as conflict, environmental crises and political change5. Despite its importance, migration remains difficult to measure consistently: existing data are sparse, concentrated in high-income settings and...
US strikes Iran in response to Apache helicopter shootdown
US strikes Iran in response to helicopter shootdown Published June 9, 2026last updated June 9, 2026What you need to know - US Central Command announces strikes on Iran after downing of US Apache helicopter over the Strait of Hormuz - Donald Trump had earlier threatened an attack on Iran over the helicopter shootdown - Israeli airstrikes hit Tyre in southern Lebanon after the military ordered the entire city to evacuate - Donald Trump says a Middle East peace deal is in the 'final throes' -...
Middle East: Trump accuses Iran of shooting down helicopter
Middle East: Trump accuses Iran of shooting down helicopter Published June 9, 2026last updated June 9, 2026What you need to know - Donald Trump said Iran downed a US Apache helicopter over the Strait of Hormuz - Israeli airstrikes hit Tyre in southern Lebanon after the military ordered the entire city to evacuate - Donald Trump says a Middle East peace deal is in the 'final throes' - The US president says the Strait of Hormuz will reopen immediately after a deal is sealed - A US Army Apache...
US strikes Iran in response to helicopter shootdown
US strikes Iran in response to helicopter shootdown Published June 9, 2026last updated June 9, 2026What you need to know - US Central Command announces strikes on Iran after downing of US Apache helicopter over the Strait of Hormuz - Donald Trump had earlier threatened an attack on Iran over the helicopter shootdown - Israeli airstrikes hit Tyre in southern Lebanon after the military ordered the entire city to evacuate - Donald Trump says a Middle East peace deal is in the 'final throes' -...
US President Trump accuses Iran of shooting down Apache attack helicopter, says US 'must' respond. Follow DW for more.
Middle East: Trump accuses Iran of shooting down helicopter Published June 9, 2026last updated June 9, 2026What you need to know - Donald Trump said Iran downed a US Apache helicopter over the Strait of Hormuz - Israeli airstrikes hit Tyre in southern Lebanon after the military ordered the entire city to evacuate - Donald Trump says a Middle East peace deal is in the 'final throes' - The US president says the Strait of Hormuz will reopen immediately after a deal is sealed - A US Army Apache...
100 days of the Iran war: How global markets and the economy have been affected, in charts
Sunday marks 100 days since the war in the Middle East began, and the conflict continues to drive substantial volatility across all asset classes in every region of the world as a lasting peace deal remains elusive. Negotiations between the U.S. and Iran have stagnated, with Washington and Tehran sending mixed messages on the state of peace talks and both sides periodically exchanging bouts of military attacks. Nevertheless, a fragile ceasefire remains in place to allow for diplomacy to take...
Ask HN: What are tools you have made for yourself since the advent of AI?
I've made a number of ceramic molds for slumping fused glass into bowls. As well as wooden templates for ceramic mugs. I've devised a few carrying tools to move glass frit paintings from my studio down to my barn where the kilns sit without spilling the glass.