reerdna

6 ms·

1.
by reerdna 2mo ago
Cool, but I find rather than just shapes and indexes, tensors with labels are much easier to use and reason about. E.g.: { {user:bob, movie:"Heat"}:0.1, {user:alice, movie:"Frozen"}:0.9, {user:carol
2.
by reerdna 5mo ago
This brings back good memories from when a friend made C in nynorsk: https://www.pvv.ntnu.no/~andreer/nynorsk/
3.
by reerdna 6mo ago
I was able to get part way some years ago by demodulating the bitstream with gnuradio and then making small changes (like replacing one note with the next higher one) and noting the differences. So that is one possible, but probably too ine
4.
by reerdna 7mo ago
I couldn't help but laugh out loud at the notion of a "held-out test set" for addition of 10-digit numbers.
5.
by reerdna 8mo ago
No, not beyond what I already put in the twitter thread. I wanted to wait until I had some cool distributed software running on it too, but then I ran into trouble with the plan 9 wifi drivers for the rpi being unstable and so I'm stil
6.
by reerdna 8mo ago
Wanted to reply to you directly also to increase the chance you see this because I think I had exactly the same intrusive thought as you, and actually built such a cluster recently. Would love to hear what you think: https://x.co
7.
by reerdna 8mo ago
I recently built a Plan 9 cluster of 8 raspberry pi zero (2w). From my supplier (digikey) the 2W was the same price and has 4X the cores! I think it looks quite cool: https://x.com/andreer/status/200750969437469123
8.
by reerdna 1y ago
Yes, but it turns out it doesn't matter much. What _does_ matter is the huge reduction in the much more dangerous brake dust, as electric vehicles convert the kinetic energy back to the battery charge via generation instead of wasting
9.
by reerdna 1y ago
Same experience in Norway. 95%+ of new cars sold are electric. I've been riding my bike to work along the same road for 15 years. I used to have to hold my breath along some sections of my ride. Now the air in the city is almost as fre
10.
by reerdna 2y ago
For use in retrieval/RAG, an emerging paradigm is to not parse the PDF at all. By using a multi-modal foundation model, you convert visual representations ("screenshots") of the pdf directly into searchable vector representat
11.
by reerdna 3y ago
Sounds a little like this recent paper; "RAPTOR: Recursive Abstractive Processing for Tree-Organized Retrieval" https://arxiv.org/abs/2401.18059
12.
by reerdna 3y ago
Analysis by dhruv___anand in https://twitter.com/dhruv___anand/status/1752641057278550199 suggests that there are three different "resolutions" in the embeddings, for the first 512, 1024 and full 1536 di
13.
by reerdna 3y ago
You can turn this into a pocket "lisp machine" by following the instructions on http://www.ulisp.com/show?4JAO - although I don't think this can make use of the LoRa interface (yet). The hardware is cool, but
14.
by reerdna 3y ago
I've been lucky to get to work through a few of these already, they do give a decent introduction in how to use Vespa tensor expressions. I believe it's one of the most flexible ways in any vector (or other) database to express ho
15.
Revolutionizing Semantic Search with Multi-Vector HNSW Indexing in Vespa(blog.vespa.ai)
10 points by reerdna 3y ago|1 comments
16.
by reerdna 4y ago
(It later did, in https://news.ycombinator.com/item?id=35074233 )
17.
by reerdna 4y ago
Sorry to have caused you pain! I thought this video would get maybe 100 view at most, or I would have put more effort into it (like implemented paren matching in the editor first). I like lisp (and apparently it's good HN bait). But th
18.
by reerdna 4y ago
Yes, I'd love some help with it, or it would probably take me years. Schematics and stls (made in tinkercad) will be coming once I find the time. For now I'm spending too much time replying to comments but I'm enjoying the do
19.
by reerdna 4y ago
No, I did spend some time reading eink datasheets but in the end it seemed too hard for me to do on my own. There's the Kindle and Freewrite so it seems possible
20.
by reerdna 4y ago
Yes, I'm running the display SPI at 2MHz which is ~25 fps. Overclocking it to twice as fast works just fine but uses significantly more power as expected. I did not try to go further. Approximately 25%-50% of the total power depending
21.
by reerdna 4y ago
More RAM, a higher resolution display, a proper keyboard, solar power and much easier to program (for me at least). But yes, it is essentially the same sort of thing, and much more poorly made at that. :-) I loved my TI-83, wrote games and
22.
by reerdna 4y ago
Using the FPU I believe but quite inefficiently, most cycles are probably spent in integer operations and chasing linked lists for the lisp parser. http://forum.ulisp.com/t/barnsley-fern-in-ulisp/1087 48MHz is the
23.
by reerdna 4y ago
Thank you! Yes, I've had this in mind for a while, I have some pictures of beginning the first prototyping by dismembering the keyboard back in 2020, although what I was thinking at the time is not recorded. I would not be surprised if
24.
by reerdna 4y ago
Yeah, matching pretty well the advertised 5mW. But uLisp is probably not using the CPU very efficiently and so not driving it to the max that could perhaps be seen with something like a well-implemented FFT.
25.
by reerdna 4y ago
Yes, it's nearly always in active mode now. I haven't done much to use the sleep modes at all, only "sleep until next keyboard interrupt" when the program calls (get-key). Measurement, selected portion is while rendering
26.
by reerdna 4y ago
Perhaps 200 days? This was already discussed in another thread. But you wouldn't be able to read the screen in darkness, it is reflective and not backlit. I have SSHed into a Microvax II some times, this is 50 times faster. So possible
27.
by reerdna 4y ago
Yes. The Apollo3 cpu is probably at least 50-100 times faster than you'd need for that. Maybe even the emacs lisp version could be ported easily.
28.
by reerdna 4y ago
I'm pretty sure 53 characters is slightly less than ideal though :-)
29.
by reerdna 4y ago
As do I. We had a 286 which this would easily outperform. It could probably run DOOM (with dithering) quite well if someone put their mind to it.
30.
by reerdna 4y ago
Yes. A smaller, but higher resolution display is available from Adafruit, and they made a calculator tutorial for it which helped me a lot in the beginning: https://learn.adafruit.com/diy-rpn-desktop-calculator-with-c...

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