mrkn

require 'json'
require 'prime'
require 'net/http'
require 'uri'

SLACK_URL = 'https://hooks.slack.com/services/....'

def post_to_slack(url, message)
    uri = URI.parse(url)
    response = Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|

mrkn

git log --pretty=format:'%ct %h %cn' | \
  sort -n | \
  ruby -e "gets;c={};while line = gets;t, _, n = line.chomp.split(' ');puts %Q(#{c[n] = n} #{Time.at(t.to_i).strftime('%Y%m%dT%H%M%S')}) unless c[n];end"

mrkn

mrkn

===== LIMIT=1000 =====
Calculating -------------------------------------
Mysql2Test.test_pluck_by_arrow(n)    64.717M bytes -     100.000 times
         Mysql2Test.test_pluck(n)   154.227M bytes -     100.000 times

Comparison:
Mysql2Test.test_pluck_by_arrow(n):  64716800.0 bytes
         Mysql2Test.test_pluck(n): 154226688.0 bytes - 2.38x  larger

===== LIMIT=2000 =====

mrkn

julia> function dot(a, b)
         s = zero(eltype(a))
         for i in 1:endof(a)
           s += a[i] * b[i]
         end
         return s
       end
dot (generic function with 1 method)

julia> a = ones(100000); b = ones(100000);

mrkn

```
$ python
Python 3.6.4 (default, Apr  3 2018, 09:35:44)
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.39.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from mxnet.gluon.parameter import ParameterDict
>>> pd1 = ParameterDict()
>>> pd2 = ParameterDict()
>>> pd1.get('a')
Parameter a (shape=None, dtype=<class 'numpy.float32'>)

mrkn

compiling arrow-nmatrix.c
arrow-nmatrix.c: In function ‘garrow_type_to_nmatrix_dtype’:
arrow-nmatrix.c:57:8: error: ‘GARROW_TYPE_BOOL’ undeclared (first use in this function)
   case GARROW_TYPE_BOOL:
        ^
arrow-nmatrix.c:57:8: note: each undeclared identifier is reported only once for each function it appears in
arrow-nmatrix.c:34:3: warning: enumeration value ‘GARROW_TYPE_BOOLEAN’ not handled in switch [-Wswitch-enum]
   switch (arrow_type) {
   ^
arrow-nmatrix.c: In function ‘nmatrix_dtype_to_garrow_data_type’:

mrkn

mrkn

require 'benchmark'

LEN = 10000
TRY = 1000

s0 = 'x' * 100
s1 = 'x' * 99 + 'y'

cases = {
  shuffle: Array.new(LEN) {|i| i }.shuffle,

mrkn

RubyData Tokyo Workshop 2017.10.26

RubyKaigi 2017 で実施した RubyData Workshop を東京で再演します。 Ruby でのデータサイエンスを実体験できるチャンスです。 みなさんのご参加をお待ちしております。

場所と日時

日時: 10月26日 (木) 14:00〜16:30 会場: 株式会社 Speee (東京都港区六本木4-1-4黒崎ビル5Fセミナールーム)