[HN Gopher] Genetically synthesized supergain broadband wire-bun...
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Genetically synthesized supergain broadband wire-bundle antenna
Author : sharpshadow
Score : 43 points
Date : 2024-07-26 05:42 UTC (5 days ago)
(HTM) web link (www.nature.com)
(TXT) w3m dump (www.nature.com)
| drwu wrote:
| This looks like just _a little bit_ advanced trivial
| optimizations for reducing size of high gain antennae. Usually I
| expect to find such articles in IEEE Transactions on Antennas and
| Propagation.
|
| What is the reason that it appears on Nature? Just because the
| genetic methods become the hype (again)?
| verdverm wrote:
| Perhaps they are having their Eureqa moment
|
| https://www.science.org/doi/10.1126/science.1165893
|
| https://en.m.wikipedia.org/wiki/Eureqa
| baq wrote:
| For those who're only distantly aware of the kind of problem
| this solves (like me), the wikipedia link further elaborates:
|
| https://en.wikipedia.org/wiki/Symbolic_regression
|
| and turns out there's a Python package
|
| https://github.com/MilesCranmer/PySR
|
| I've needed something like this at least once (but IIRC no
| more than twice ;) ), so I'm glad to know what to look for
| next time, thanks for the rabbit hole!
| verdverm wrote:
| The Science paper launched my PhD topic. I asked a
| professor what they did for research, they listed a bunch
| of boring things... saw that and then asked "Did you see
| that talk about evolving equations? Do you want to work on
| that?" I was like hell yes!
|
| (Hod gave a talk at our uni about all his research topics)
|
| I wrote a deterministic algorithm for SymReg that
| outperforms genetic programming.
|
| https://github.com/verdverm/pypge
| semi-extrinsic wrote:
| Note that this is not in the journal _Nature_ , but the
| considerably lower impact _Nature Communications Engineering_.
|
| It's so new that it does not yet have an impact factor, but
| Nature themselves say it's less prestigious than their second-
| tier journal _Nature Communications_.
|
| The name is also super weird, because you could well be led to
| believe the journal is about Communications Engineering, but it
| is actually Communications on Engineering.
| Havoc wrote:
| Disappointed that it doesn't look weird & alien :(
| jonathanlydall wrote:
| Initially I misread "supergain" as "supergrain" in the title and
| was especially intrigued.
| twic wrote:
| This antenna has a uniquely high Q factor (quinoa).
| progbits wrote:
| See also this funky looking antenna NASA made with genetic
| algorithm in 2006:
|
| https://en.m.wikipedia.org/wiki/Evolved_antenna#/media/File%...
| twic wrote:
| Genetic optimisation seems like an odd choice here. The
| fundamental operation of genetic optimisation is crossing over -
| taking two solutions, and picking half the parameters from one,
| and half from the other. This makes sense if parameters make
| independent contributions to fitness. But the case of antenna
| design, surely that's exactly what they don't? The position of
| each element relative to the other elements matters enormously.
| If you had two decent antenna designs, cut both in half, and
| glued the halves together, i would expect that to be a crappy
| antenna.
|
| It would be interesting to see an evaluation of genetic
| optimisation vs more conventional techniques like simplex or
| BOBYQA, or anything else in NLopt.
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(page generated 2024-07-31 23:02 UTC)