09:59 the future of community
radically easier to create new communities
easier to find members to scale
people look to nurture small communities for growth
it's so easy to find places to gather together!
focusing on people connecting with each other and bootstrapping communities
People & Company
as the public web becomes too crowded, entertainers continue to build in public, but the rest of us look for smaller, more private spaces; connecting everyone means that nobody has a true community, so people are driving towards smaller, intentionally brewed community groups
how to bootstrap
tools are cruel and disconnected
what are the 'best practices' for starting a small community? evetns? meetups? traditions? customs? subgroups? how can these be encouraged? mandated?
21:16 learned sorting algorithm case
build a CDF of the data
put each item into position estimated by the CDF
use sorting algorithm very efficient with nearly sorted arrays
scan for nearest vacant slot
list of elements for each position
spill bucket merged to the end of the array
'experimentally', spill bucket worked the best
lost to radix sort because of a sequential cache; make it cache efficient? use model prediction to bin the elements, not just insert them!
first phase: cascading fucket sort, making predictions to put input elements into one of f ordered buckets
after buckets of size t, each are sorted using the model predictions to put elements in the right position within the bucket concat the buckets in order merge and sort the spilled bucket with the others!
linear spline fitting for training what is this? learn it if you want to come back! leads to faster training and fewer key slots used