Forwarded from Hacker News (yahnc_bot)
Nokia launches DIY repairable budget Android phone https://www.theguardian.com/technology/2023/feb/25/nokia-launches-diy-repairable-budget-android-phone
the Guardian
Nokia launches DIY repairable budget Android phone
Nokia G22 has removable back and standard screws allowing battery swap in less than five minutes at home
Forwarded from Hacker News (yahnc_bot)
Help! Is This Arabic? https://isthisarabic.com/
Isthisarabic
Help, is this Arabic?
For some reason, you're in charge of implementing Arabic into your project, but you don't know Arabic. Now what?
Forwarded from Hacker News (yahnc_bot)
Speedy transactions in multicore in-memory databases http://muratbuffalo.blogspot.com/2023/02/speedy-transactions-in-multicore-in.html
Blogspot
Speedy Transactions in Multicore In-Memory Databases
This paper is from SOSP'13. The Polyjuice paper, which we studied last week, built on the Silo codebase and commit protocol, which led me ...
Forwarded from Hacker News (yahnc_bot)
Zig's Curious Multi-Sequence for Loops https://kristoff.it/blog/zig-multi-sequence-for-loops/
kristoff.it
Zig's Curious Multi-Sequence For Loops
Loris Cro's Blog
Forwarded from Hacker News (yahnc_bot)
Lessons from the Debian/OpenSSL Fiasco (2008) https://research.swtch.com/openssl
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煎蛋网
用全等的、面积为1的瓷砖无缝铺砌二维平面,则使周长最小的瓷砖,形状为何?
把问题推广到三维空间里,又如何呢
Forwarded from Lobste.rs
How the 8086 processor determines the length of an instruction
Comments
via gwoplock@users.lobste.rs (gwoplock)
Comments
via gwoplock@users.lobste.rs (gwoplock)
Righto
How the 8086 processor determines the length of an instruction
The Intel 8086 processor (1978) has a complicated instruction set with instructions ranging from one to six bytes long. This raises the q...
Forwarded from Hacker News (yahnc_bot)
AMD Zen2 ymm registers rolling back https://lkml.org/lkml/2023/2/22/33
Forwarded from Hacker News (yahnc_bot)
Reverse-engineering the ModR/M addressing microcode in the Intel 8086 processor https://www.righto.com/2023/02/8086-modrm-addressing.html
Righto
Reverse-engineering the ModR/M addressing microcode in the Intel 8086 processor
One interesting aspect of a computer's instruction set is its addressing modes, how the computer determines the address for a memory acce...
Forwarded from Lobste.rs
ArkType: The first isomorphic type system for TS/JS
Comments
via cherryblossom@users.lobste.rs (cherryblossom)
Comments
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ArkType
TypeScript's 1:1 validator, optimized from editor to runtime
Forwarded from &'a ::rynco::UntitledChannel (Rynco Maekawa)
使用脑电波活动作为输入运行 Stable Diffusion 进行高分辨率图像重建
https://sites.google.com/view/stablediffusion-with-brain/
摘要
从人脑活动重建视觉体验为研究大脑如何表示世界、解释计算机视觉模型与我们的视觉系统之间关系提供了一种独特的方式。虽然近年来深度生成模型已被应用于此任务,但实现高语义保真度的真实图像重建仍是一个具有挑战性的问题。在本文中,我们提出了一种基于扩散模型(Diffusion Model,DM)的新方法,通过功能性磁共振成像(fMRI)获得的人脑活动来重建图像。我们依赖于一种名为 Stable Diffusion 的潜在空间扩散模型(Latent Diffusion Model,LDM)。该模型降低了扩散模型的计算成本,同时保持了其高生成性能。我们还通过研究LDM的不同组成部分(如潜在向量Z、条件输入C和去噪U-Net的不同元素)与不同的脑功能联系起来,表征了LDM的内部机制。我们展示了我们的方法可以简单地重建高保真度的高分辨率图像,无需进行任何额外的训练和微调复杂的深度学习模型。我们还从神经科学的角度提供了对不同LDM组件的定量解释。总体而言,我们的研究提出了一种有前景的从人脑活动恢复图像的方法,并为理解扩散模型提供了一个新的框架。
(摘要由 ChatGPT 翻译)
https://sites.google.com/view/stablediffusion-with-brain/
摘要
从人脑活动重建视觉体验为研究大脑如何表示世界、解释计算机视觉模型与我们的视觉系统之间关系提供了一种独特的方式。虽然近年来深度生成模型已被应用于此任务,但实现高语义保真度的真实图像重建仍是一个具有挑战性的问题。在本文中,我们提出了一种基于扩散模型(Diffusion Model,DM)的新方法,通过功能性磁共振成像(fMRI)获得的人脑活动来重建图像。我们依赖于一种名为 Stable Diffusion 的潜在空间扩散模型(Latent Diffusion Model,LDM)。该模型降低了扩散模型的计算成本,同时保持了其高生成性能。我们还通过研究LDM的不同组成部分(如潜在向量Z、条件输入C和去噪U-Net的不同元素)与不同的脑功能联系起来,表征了LDM的内部机制。我们展示了我们的方法可以简单地重建高保真度的高分辨率图像,无需进行任何额外的训练和微调复杂的深度学习模型。我们还从神经科学的角度提供了对不同LDM组件的定量解释。总体而言,我们的研究提出了一种有前景的从人脑活动恢复图像的方法,并为理解扩散模型提供了一个新的框架。
(摘要由 ChatGPT 翻译)
Google
Stable Diffusion with Brain Activity
Accepted at CVPR 2023
Yu Takagi* 1,2 , Shinji Nishimoto 1,2
1. Graduate School of Frontier Biosciences, Osaka University, Japan
2. CiNet, NICT, Japan
Yu Takagi* 1,2 , Shinji Nishimoto 1,2
1. Graduate School of Frontier Biosciences, Osaka University, Japan
2. CiNet, NICT, Japan