2011-01-27

• ​linux.conf.au LCA 2011 - Day 4

• 大會錄影紀錄 - ​http://linuxconfau.blip.tv/

• Keynote : Eric Allman
  • 介紹 sendmail，雖然說大家都開始使用公用的電子郵件（如：Gmail、Yahoo!、Hotmail等），但為了資料隱私安全性，講者還是建議應該要自行架設 mail server。
  • 在討論串中，有人分享了以前架設的經驗 - ​How To Install Postfix, Dovecot, Amavis, ClamAV, and Spamassassin (Etch)

• <*> Advanced C Coding For Fun! - Rusty Russell
  • ​http://ccan.ozlabs.org/
• <1> Kernel development: how it goes wrong and why you should be a part of it anyway - Jonathan Corbet
  • Lesson 1 : get merged into main tree - 讓程式被納入主要核心開發
  • 開發是孤獨的，team
• <2> Orchestrating the Intelligent Web with Apache Mahout - ​Aneesha Bakharia

  /opt/mahout$ bin/mahout
  /opt/mahout$ bin/mahout kmeans -help
  

  /opt/mahout$ bin/mahout seqdirectory -i <input> -o <seq-output>
  /opt/mahout$ bin/mahout seq2sparse -i <seq-output> -o <vector-sparse>
  

  • parallel FPGrowth algorism
  • Latent Dirichlet Allocation (LDA) 可以幫忙做話題分類

	Word 1	Word 2	Word n
Topic 1	0.5	0	1
Topic 2	0	0.5	0

	Word 1	Word 2	Word n
Doc 1	1	0	0
Doc 2	0	1	0
Doc n	1	0	1

/opt/mahout$ bin/mahout lda -input <PATH>  .... (skipped)

• k-mean 的 k 分類要靠經驗，LDA 的 k 分類也是要嘗試，如果能夠結合 WordNet 的語意屬性，或許會更容易做語意網。
• Programming Collective Intelligence - ​http://oreilly.com/catalog/9780596529321
  • 
• Mahout in Action - ​http://www.manning.com/owen/
  • 
• No 3 - Identifying Manipulated Images
• No 2 - Seam Carving - Content Aware Resizing
• No 1 - Digital Face Beautification

Autonomic Computing

• ​What is autonomic computing?

  As a scientific discipline, autonomic computing encompasses the study of 
  systems that are capable of autonomously achieving desired behaviors. The 
  systems are often called self-* systems, where * is a placeholder for the 
  type of behavior. For example, self-tuned systems are capable of tuning 
  their performance as needed by their intended mission; self-protected 
  systems automatically deal with intrusion attacks. Self-managed systems 
  do not require manual configuration and updating, and self-healing systems 
  are capable of repairing themselves. Self-managed systems can also be more 
  broadly construed as being capable of managing all behaviors mentioned above.