Bulan: Agustus 2019

Buku Gratis Data Mining

Berikut ini beberapa buku data mining yang nampaknya bagus (dari situs http://christonard.com/12-free-data-mining-books/):

  1. An Introduction to Statistical Learning with Applications in R by James, Witten, Hastie & Tibshirani – . 426 Pages.
  2. The Elements of Statistical Learning by Hastie, Tibshirani & Friedman – 745 Pages.
  3. A Programmer’s Guide to Data Mining by Ron Zacharski –
  4. Probabilistic Programming & Bayesian Methods for Hackers by Cam Davidson-Pilson –
  5. Think Bayes, Bayesian Statistics Made Simple by Allen B. Downey –. 195 Pages.
  6. Data Mining and Analysis, Fundamental Concepts and Algorithms by Zaki & Meira –  599 Pages.
  7. An Introduction to Data Science by Jeffrey Stanton –  195 Pages.
  8. Machine Learning by Chebira, Mellouk & others –  422 Pages.
  9. Machine Learning – The Complete Guide –
  10. Bayesian Reasoning and Machine Learning by David Barber – 648 Pages.
  11. A Course in Machine Learning by Hal Daumé III – . 189 Pages.
  12. Information Theory, Inference and Learning Algorithms by David J.C. MacKay – 628 Pages.
  13. Modeling with Data by Ben Klemens –  454 Pages.
  14. Mining of Massive Datasets by Rajaraman & Ullman . 493 Pages

Instalasi Redmine 3.4.4-stable di Ubuntu 18.04.03

At the moment of writing this article, default installation in Ubuntu 18.04.03 will give you Redmine version 3.4.4.-stable

Installing Redmine 3.4.4-stable in 18.04.03
Use live server ISO (ubuntu-18.04.3-live-server-amd64.iso)

# reference: How to Install Redmine on Ubuntu step by stepapt-get update
apt-get upgrade

# install dependencies
apt install apache2 software-properties-common ruby-rmagick mysql-server mysql-client mysql-common ruby-dev build-essential libmysqlclient-dev libssl-dev gcc libmysqlclient-dev libapache2-mod-passenger libmagickcore-dev
apt install imagemagick-6.q16
apt-get install redmine redmine-mysql

# there may be questions from installer. Refer to Howto Install Redmine on Ubuntu www.redmine.org/projects/redmine/wiki/howto_install_redmine_on_ubuntu_step_by_step for explanation

# Next step is to upgrade all gems. It will take sometime to update all gems.

gem update

# possible error: connection problem.
# example erro message: Updating roadie
ERROR: Error installing roadie:
Unable to resolve dependency: user requested ‘roadie (= 3.5.0)’

gem install bundler

vi /etc/apache2/mods-available/passenger.conf

existing file:

<IfModule mod_passenger.c>
PassengerRoot /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini
PassengerDefaultRuby /usr/bin/ruby
</IfModule>

Create symlink:

ln -s /usr/share/redmine/public /var/www/html/redmine

edit as follows:

<IfModule mod_passenger.c>
PassengerDefaultUser www-data
PassengerRoot /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini
PassengerDefaultRuby /usr/bin/ruby
</IfModule>

edit file:

vi /etc/apache2/sites-available/000-default.conf

add the following lines:

<Directory /var/www/html/redmine>
RailsBaseURI /redmine
PassengerResolveSymlinksInDocumentRoot on
</Directory>

Create Gemlock file:

touch /usr/share/redmine/Gemfile.lock
chown www-data:www-data /usr/share/redmine/Gemfile.lock

service apache2 restart

browse to your website:

http://192.168.0.205/redmine/

with username: admin,
password: admin

You can check Redmine information in by following the menu : [Administration] -> [Information]

It will show something like this:

Default administrator account changed
Attachments directory writable
Plugin assets directory writable (./public/plugin_assets)
RMagick available (optional)
ImageMagick convert available (optional)

Environment:
Redmine version 3.4.4.stable
Ruby version 2.5.1-p57 (2018-03-29) [x86_64-linux-gnu]
Rails version 4.2.10
Environment production
Database adapter Mysql2
SCM:
Git 2.17.1
Filesystem
Redmine plugins:
no plugin installed

 

Redmine 3.4.4-stable

Instalasi Redmine 4.01 di Ubuntu 19.04

Prosedur instalasi Redmine di Ubuntu secara umum dapat dibaca di http://www.redmine.org/projects/redmine/wiki/howto_install_redmine_on_ubuntu_step_by_step , namun untuk setiap versi Ubuntu ada kemungkina perbedaan-perbedaan kecil.

Instalasi Aplikasi Pendukung

Berikut ini proses instalasi aplikasi pendukung Redmine:

apt-get update
apt-get remove cryptsetup-initramfs #optional, karena kadang-kadang kalau apt-get upgrade jadi macet di sini
apt-get upgrade
apt-get install apache2 software-properties-common ruby-rmagick mysql-server mysql-client mysql-common
apt-get install ruby-dev build-essential libmysqlclient-dev libssl-dev gcc libmysqlclient-dev
apt-get install libapache2-mod-passenger # untuk integrasi apache-passenger
 

apt-get install imagemagick libmagickcore-dev libmagickwand-dev
apt-get install libmagickcore-dev # untuk rmagick , menghindari pesan "ERROR: Can't install RMagick 4.0.0." https://stackoverflow.com/questions/28324439/cant-install-rmagick-0-0-0-cant-find-magick-config
 

apt-get install redmine redmine-mysql
gem update
gem install bundler
bundle update

Konfigurasi Apache

edit file /etc/apache2/mods-available/passenger.conf 

existing:

PassengerRoot /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini PassengerDefaultRuby /usr/bin/ruby

ditambah “PassengerDefaultUser www-data” menjadi:

PassengerDefaultUser www-data
PassengerRoot /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini PassengerDefaultRuby /usr/bin/ruby

tambahkan symlink:

ln -s /usr/share/redmine/public /var/www/html/redmine

edit file /etc/apache2/sites-available/000-default.conf , tambahkan sebagai berikut:

<Directory /var/www/html/redmine>
    RailsBaseURI /redmine
    PassengerResolveSymlinksInDocumentRoot on
</Directory>

Tambahkan file lock untuk Gemfile

touch /usr/share/redmine/Gemfile.lock
chown www-data:www-data /usr/share/redmine/Gemfile.lock

Restart Apache supaya konfigurasi dibaca ulang:

service apache2 restart

cek di browser:

ke alamat http://192.168.0.203/redmine

default username: admin, default password: admin
setelah login akan diminta untuk mengganti password

Pengecekan

Tampilan Administrator -> Information

Redmine 4.01 Information

 

LVIS Challenge 2019

Facebook has just introduced a great dataset and corresponding machine learning challenge at same time. The dataset is named LVIS (Large Vocabulary Instance Segmentation).

This is a great visual instance dataset.

Sample dataset

The challenge: https://www.lvisdataset.org/challenge

Today, rigorous evaluation of general purpose object detectors is mostly performed in the few category regime (e.g. 80) or when there are a large number of training examples per category (e.g. 100 to 1000+). LVIS provides an opportunity to enable research in the setting where there are a large number of categories and where per-category data is sometimes scarce.
Given that state-of-the-art deep learning methods for object detection perform poorly in the low-sample regime, we believe that our dataset poses an important and exciting new scientific challenge.

The dataset: https://www.lvisdataset.org/dataset

Source: https://twitter.com/facebookai/status/1159548405867139074