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Related Articles from SNS
The memory of $\omega$-regular and BC($\Sigma_2^0$) objectives
arXiv:2502.05840v4 Announce Type: replace Abstract: In the context of 2-player zero-sum infinite-duration games played on (potentially infinite) graphs, the memory of an objective is the smallest integer k such that in any game won by Eve, she has a strategy with <= k states of memory. For omega-regular objectives, checking whether the memory equals a given number k was not known to be decidable. In this work, we focus on objectives in BC(Sigma0^2), i.e. recognised by a potentially infinite...
The memory of $\omega$-regular and BC($\Sigma_2^0$) objectives
arXiv:2502.05840v3 Announce Type: replace Abstract: In the context of 2-player zero-sum infinite-duration games played on (potentially infinite) graphs, the memory of an objective is the smallest integer k such that in any game won by Eve, she has a strategy with <= k states of memory. For omega-regular objectives, checking whether the memory equals a given number k was not known to be decidable. In this work, we focus on objectives in BC(Sigma0^2), i.e. recognised by a potentially infinite...
When Does Predictive Inverse Dynamics Outperform Behavior Cloning?
arXiv:2601.21718v2 Announce Type: replace Abstract: Behavior cloning (BC) is a practical offline imitation learning method, but it often fails when expert demonstrations are limited. Recent works have introduced a class of architectures named predictive inverse dynamics models (PIDM) that combine a future state predictor with an inverse dynamics model. While PIDM often outperforms BC, the reasons behind its benefits remain unclear.
Potential-Guided Flow Matching for Vision-Language-Action Policy Improvement
arXiv:2606.04968v1 Announce Type: new Abstract: Large vision-language-action (VLA) policies are increasingly trained as conditional generative models over action chunks. Yet deployment produces mixed-quality experience-successful demonstrations, partial completions, recoverable mistakes, and failures-that is difficult to use with standard imitation. Full behavior cloning (BC) imitates failures, filtered BC discards useful sub-trajectories, and offline reinforcement learning adds a large critic.
Update-Free On-Policy Steering via Verifiers
arXiv:2603.10282v2 Announce Type: replace Abstract: In recent years, Behavior Cloning (BC) has become one of the most prevalent methods for learning manipulation from human demonstrations. Despite their successes, BC policies are often brittle and struggle with precise manipulation. To overcome these issues, we propose UF-OPS, an Update-Free On-Policy Steering method that enables the robot to predict the success likelihood of its actions and adapt its strategy at execution time.
Archaeologists find ancient matrilineal society in Turkiye’s Catalhoyuk
Archaeologists find ancient matrilineal society in Turkiye’s Catalhoyuk About 9,000 years ago, the Neolithic settlement of Catalhoyuk was an egalitarian, matrilineal society with no evidence of organised violence. Catalhoyuk, Turkiye – About an hour southeast of Konya lies one of the most exciting Neolithic finds of the 20th century – the densely populated settlement of Catalhoyuk. Occupied for 1,000 years from about 7000 to 6000 BC, Catalhoyuk has drawn archaeologists since its discovery in...
Iron Age Britons may have removed the brains of the dead
A woman interred in Scotland 2000 years ago has peculiar scrape marks inside her skull, which suggest that removing the brain after death may have been a funeral tradition in Iron Age Britain. The funerary practices in Iron Age Britain – which ran from about 800 BC until the Roman invasion of Britain in AD 43 – and the Iron Age more generally are mysterious because human remains from that long ago rarely survive. We do know that some people from this time tended to be buried alongside their...
Vancouver: A travel guide to the 2026 World Cup host city
BC Place in downtown Vancouver will host seven World Cup fixtures – including two of Canada's group games.
Ötzi's frozen remains may harbour metabolically active microbes
Some of the microbes lingering on the 5300-year-old remains of “Ötzi the Iceman” may still be metabolically active, despite being kept in icy conservation conditions. Ötzi’s mummified body was discovered in 1991 thawing out of an Alpine glacier close to the border of Austria and Italy. He is estimated to have lived at some point between 3350 and 3120 BC, and in the 35 years since he was found, studies of his remains have revealed a treasure trove of information, including that he was...
'Thought it was a toy gun': Indian man in Canada unaware of friend's Bishnoi links
Jashandeep Singh, an Indian man, who has been linked to the incidents of extortion and shooting in Canada, made some shocking revelations after his friend Arshdeep Singh was deported back to India for his direct role in criminal activities in Ontario, Alberta and BC. Jashandeep said in his immigration hearing that he was not connected to the gang, he did not even know his college friend Arshdeep was and that his only mistake was that he never asked his friend why he had a gun -- because...