brain of mat kelcey...


high performance ML with JAX

September 12, 2021 at 12:30 PM | categories: jax, talk

did a talk ay pycon on jax. check out the recording!

evolved channel selection

March 01, 2021 at 10:20 PM | categories: projects, ga, jax

rather than use all 13 channels in a multi spectral image for classification can we train a model that is robust to all combos, at all resolutions, and use a genetic algorithm to choose which are the most valuable? (spoiler; yes)

crazy large batch sizes

February 14, 2021 at 10:30 PM | categories: quick_hack, tpu, jax

a quick hack to see how fast we can get a v3-32 pod slice cranking with a global batch size of 170,000; tl-dr pretty fast!

solving y=mx+b... with jax on a tpu pod slice

February 07, 2021 at 01:00 PM | categories: tpu, ensemble_nets, jax, projects, haiku

a 4 (and a bit) part tutorial / colab / screencast series starting with jax fundamentals working up a data parallel approach to running on a cloud tpu pod slice... all focused on solving the toughest problem in machine learning; 1d y=mx+b

out of distribution detection using focal loss

December 02, 2020 at 01:00 PM | categories: objax, jax, projects

a series of small experiments on using focal loss to do out of distribution detection

dithernet very slow movie player

October 21, 2020 at 10:30 PM | categories: gan, jax, projects, objax

a GAN experiment to generate dithers for an eink screen minimising pixel change between frames for a very slow movie player.

ensemble networks

September 17, 2020 at 06:30 AM | categories: objax, projects, ensemble_nets, jax

ensemble nets; using jax vmap to batch over not just the inputs of a model but also sets of multiple models parameters.

metric learning for image similarity search in objax

September 02, 2020 at 12:00 PM | categories: objax, jax

an objax tutorial on using metric learning for image similarity.

a jax random embedding ensemble network

June 15, 2020 at 06:30 AM | categories: ensemble_nets, jax

random embedding networks can be used to generate weakly labelled data for metric learning and they see a large benefit from being run in ensembles. can we represent these ensembles as a single forward pass in jax? why yes! yes we can!

popular posts...

ensemble nets : training ensembles as a single model using jax on a tpu pod slice(sept 2020)


bnn : counting bees with a rasp pi (may 2018)


drivebot : learning to do laps with reinforcement learning and neural nets (feb 2016)


wikipedia philosophy : do all first links on wikipedia lead to philosophy? (aug 2011)


cartpole++ : deep RL hacking with a complex 3d cart pole environment (aug 2016)


malmomo : deep RL hacking on minecraft with malmo (jan 2017)


some papers from my time at google research / brain...

my honours thesis

the co-evolution of cooperative behaviour (1997) evolving neural nets with genetic algorithms for communication problems.

old projects...