Hubble

Science

Hubble study finds nearby galaxies with the fastest winds let the smallest fraction of ionizing radiation escape

A University of Michigan-authored account says the result challenges a proposed role for supernova-driven winds in reionization.

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3 Sources, 2h ago, first seen 2h ago

AI

Three variables are claimed to predict verbatim memorization in language models

Christopher Potts says Jing Huang’s Hubble model suite experiments use frequency, recency and hardness; hardness has comparatively low predictive value.

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15 Sources, 5d ago, updated 5d ago

Dot plot addressing whether memorized sequences can be predicted without training the full model. Headline: “Largely yes, with Frequency and Recency doing most of the work.” Four rows show AUC-ROC (0.5 = chance, 1.0 = perfect) for a linear predictor of verbatim extraction, one mark per Hubble model (1B or 8B params; 100B or 500B tokens). All three features: 0.82–0.94. Frequency alone: 0.81–0.93. Recency alone: 0.82–0.90. Hardness alone: 0.51–0.55, barely above chance. In every row the 1B/500B model scores lowest and the 1B/100B model highest. Footnote: held-out strings, mean of 5 seeds; Frequency = copies of the string, Recency = steps since last copy, Hardness = NLL on models that never saw it.

Science

Hubble spots a 10-sided atmospheric wave around Saturn’s south pole

NASA says this is the first large, regular-sided jet pattern observed in Saturn’s southern hemisphere.

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1 Source, 42d ago, first seen 42d ago

Science

Hubble reportedly spots a rare 10-sided wave around Saturn’s south pole

A user’s space-news roundup says scientists are watching the developing wave closely because shapes like it don’t appear often.

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1 Source, 43d ago, first seen 43d ago

Recent posts

Hubble study finds nearby galaxies with the fastest winds let the smallest fraction of ionizing radiation escape

Three variables are claimed to predict verbatim memorization in language models

Hubble spots a 10-sided atmospheric wave around Saturn’s south pole

Hubble reportedly spots a rare 10-sided wave around Saturn’s south pole

Hubble

Recent posts

Hubble study finds nearby galaxies with the fastest winds let the smallest fraction of ionizing radiation escape

Three variables are claimed to predict verbatim memorization in language models

Hubble spots a 10-sided atmospheric wave around Saturn’s south pole

Hubble reportedly spots a rare 10-sided wave around Saturn’s south pole