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Meschers: Geometry Processing of Impossible Objects

news.ycombinator.com Ana Dodik 2025-10-02 21:09:50

Meschers: Geometry Processing of Impossible Objects Fig. 1. The mescher is a geometry representation that allows rendering and relighting impossible objects (left), as well as performing intrinsic geometry processing operations like heat diffusion (center) and geodesic distance queries (right). Abstract Impossible objects, geometric constructions that humans can perceive but that cannot exist in real life, have been a topic of intrigue in visual arts, perception, and graphics, yet no satisfyin

Topics: geometry impossible meschers objects representation
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Contrastive Representations for Temporal Reasoning

news.ycombinator.com Unknown 2025-10-19 04:42:40

In classical AI, perception relies on learning spatial representations, while planning—temporal reasoning over action sequences—is typically achieved through search. We study whether such reasoning can instead emerge from representations that capture both spatial and temporal structure. We show that standard temporal contrastive learning, despite its popularity, often fails to capture temporal structure, due to reliance on spurious features. To address this, we introduce Contrastive Representati

Topics: crtr reasoning representations structure temporal
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All AI models might be the same

news.ycombinator.com Jack Morris 2026-01-06 23:28:49

Project CETI is a large-scale effort to decode whale speech. If AI models do learn a universal language, we might be able to use it to talk to whales. Growing up, I sometimes played a game with my friends called “Mussolini or Bread.” It’s a guessing game, kind of like Twenty Questions. The funny name comes from the idea that, in the space of everything, ‘Mussolini’ and ‘bread’ are about as far away from each other as you can get. One round might go like this: Is it closer to Mussolini or bre

Topics: compression embedding model models representation
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All AI Models Might be The Same

news.ycombinator.com Jack Morris 2026-01-07 05:28:49

Project CETI is a large-scale effort to decode whale speech. If AI models do learn a universal language, we might be able to use it to talk to whales. Growing up, I sometimes played a game with my friends called “Mussolini or Bread.” It’s a guessing game, kind of like Twenty Questions. The funny name comes from the idea that, in the space of everything, ‘Mussolini’ and ‘bread’ are about as far away from each other as you can get. One round might go like this: Is it closer to Mussolini or bre

Topics: compression embedding model models representation
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