Viewing profile — peterderivaz

I've been trying out this model on a 4090 to transcribe a Japanese grammar pdf (written in English with lots of Japanese examples) and it seems to be working very well from the sma…

Reverse engineering the graphics from the 1998 3D Populous game.

The Raspberry Pi contains a Videocore processor (I wrote the original instruction set coding and assembler and simulator for this processor). This is a general purpose processor wh…

Project Euler challenge involving Fractran: https://projecteuler.net/problem=308

In practice I would expect Knuth's DLX algorithm to be much faster, both for generating the first solution, and for counting all solutions (for any reasonable sized N). There are s…

We paid a company called Metaware to make a compiler. I believe this compiler is still in use. As it happens, while we were waiting for this compiler to be made for us, I ported GC…

It was my first job out of University to design this instruction set which may explain some of the quirkiness... Initially the instructions did all set the status flags but it caus…

Not the original poster, but one thing that confused me was that I can clearly draw a graph that cannot be two coloured with a single pen stroke if I am allowed to reverse directio…

I've found using nolearn and lasagne on top of Theano made Theano much easier to use while still being in Python with access to familiar graphics routines. lasagne gives you ways o…

I think in this formula the altitude should be in feet, while the result is in miles, so 30,000 feet actually gives 213 miles.

I ran some experiments to investigate the discrepancy. The largest differences were caused by: 1. A variable quantiser being used for HEVC, but not for VP9 (as you described) 2. Ke…

I don't know Colin's logic, but my personal reasoning would be: 1. If this were true then it gives a simple, efficient, deterministic method to test for primes. (You can compute P_…

The list is here: http://oeis.org/A013998 The first is P_(271441) with 33,150 digits

I ran into this when computing PSNR comparisons using a Numpy function that returned a numpy integer type: >>> import numpy >>> x=0 >>> y=numpy.int32(2*10**9) >>> x+=y >>> x+=y >>>…

Another similar idea is the Kempner series. If you add 1/n for all natural numbers n, then the series tends towards infinity. However, if you leave out any integers that contain a …

I enjoyed this blog post and Javascript implementation of an interactive Quantum circuit inspector. http://strilanc.com/quantum/2014/03/07/Building-your-own-Qua... It is a lower le…

The vector register file is a block of registers 64 bytes across by 64 down which can be accessed horizontally (H) or vertically (V), and in units of 16 bytes (H8), 16 shorts (H16 …

I wonder if you misunderstood his comment as a suggested method to solve the mathematical problem? The way I read it, he was suggesting a possible way of reducing the size of the D…

I've been using Anki for learning Japanese. I've particularly appreciated the decks that include audio of complete sentences and have found that it has greatly improved my ability …

Have you seen crazybump? There is a good tutorial on it at http://www.blenderguru.com/videos/the-secrets-of-realistic-t... It is a program that takes a single image and generates d…

Interestingly, Wikipedia disagrees. For a radix of 10, there is thought to be no number with a multiplicative persistence > 11: this is known to be true for numbers up to 10 to the…