Viewing profile — lowdanie
lowdanie
HN member- Joined
- Sun, Dec 01, 2019, 1:53 PM UTC
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About lowdanie
Recent public activity
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Comment #46726059
From my understanding, accurate simulations at the electron level (post Hartree Fock / DFT) are currently limited to 100 atoms (on a gpu cluster this can take hours or days). Maybe…
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Comment #46719468
Theoretically yes, but the method that is currently implemented (Hartree Fock) is notoriously inaccurate for molecular interactions. For example it does not predict the Van Der Waa…
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Comment #46719415
Thanks!
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Comment #46719412
Thanks!
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Comment #46719407
The short answer is yes, but either memory (if the electron integrals are cached) or runtime (if they are not cached) currently scales like O(n^4) where n is the number of atoms. I…
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Comment #46719273
In a nutshell, the only approximation in Hartree Fock is the assumption that the electronic wave function has a very specific form. Namely, that it is a Slater determinant of orbit…
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Comment #46718550
Since the gradients are computed with jax, the library can be used to differentiate with respect to all inputs including nuclear charge and basis set parameters (exponents and cont…
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Comment #46631472
https://www.daniellowengrub.com/
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Comment #44190613
Thanks!
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Comment #40274104
One related concept is “partially homomorphic encryption” ( https://en.wikipedia.org/wiki/Homomorphic_encryption#Partial... ). These are encryption schemes that are homomorphic und…
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Comment #40193141
Thanks! I completely agree that it is possible to homomorphically evaluate b - much more easily using homomorphic addition and multiplication. However, wouldn't we still need some …
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Comment #27082517
As other commenters have mentioned, it is common practice to use such an approach to find genes that are associated with a disease (GWAS). But finding a correlated gene is only the…
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Comment #26631151
Yes, the even healthy cells are constantly transporting protein fragments to the cell surface but the immune system learns to ignore these as it is developing. In addition, B and T…
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Comment #26630988
There is a system that transports protein fragments to the cell surface and “presents” them to the immune cells: https://en.m.wikipedia.org/wiki/Antigen_presentation
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Comment #26362306
In some sense you have described our microbiome :)
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