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奥别产と统计
@y_system!
!
2013/08/11 作成?
2014/06/08 更新
about:me
? 家や研究室ではLANケーブルなどを張り巡ら
せる担当
? トラブルシューティングに巻き込まれる
? 横须贺市民
ふだんの研究は
? センサから得られる信号を処理して…という
ようなことをしています。
!
? すみません、データを扱うようなお話はあり
ません。
Agenda
!
? インターフェイスとして
? JavaScript と統計
? 奥别产データ
インターフェイスとして
Webインターフェイス
? Webブラウザを使用して対話的な処理を行う
? UIやx11などが不要
? ex) Juliaでは主に作図用として採用
- A FRESH APPROCHTOTECHNICAL COMPUTING -
一応、サーバーは準備しました。
? 今は接続できませんが
? 同時接続数が多いと落ちるかも…。
- A FRESH APPROCHTOTECHNICAL COMPUTING -
plot(cumsum(randn(500)))
plot(x->x^2,-10,10)
- A FRESH APPROCHTOTECHNICAL COMPUTING -
なぜWebインターフェイスなの?
? 昨今のWebの進化によるもの
? クロスプラットフォーム
? Windows、OSX、Linux、スマホ…
? クラウド?コンピューティング
? HTMLは文書のためのものではない
? 作図方法が豊富になった
? SVG (Scalable Vector Graphics)に対応
? epsへの変換が容易
? Canvasタグ内で画像生成
? 3Dも描画できる。
(参考)canvasについてのデモ
三重大の奥村先生のページ
ホーム > JavaScript講座 >グラフを描く(canvas編)
http://oku.edu.mie-u.ac.jp/ okumura/javascript/graph-canvas.html
Webインターフェイスを持つ言語
? Julia
? J
? Mathematica (WITM)
? R(Rstudio)
などなど
RStudio Serverのインストール方法
http://www.rstudio.com/products/rstudio/
download-server/
に細かいことは書いてありますが….
$ sudo apt-get install r-base
$ sudo apt-get install gdebi-core
# Required only for Ubuntu, not Debian
$ sudo apt-get install libapparmor1
!
$ wget http://download2.rstudio.org/rstudio-server-0.98.507-i386.deb
$ sudo gdebi rstudio-server-0.98.507-i386.deb
ポート番号などの設定はここに!
/etc/rstudio/rserver.conf!
/etc/rstudio/rsession.conf!
!
https://support.rstudio.com/hc/en-us/articles/200552316-Con?guring-the-Server
端末の user/password でログイン
いつもどおりの搁厂迟耻诲颈辞画面が
闯补惫补厂肠谤颈辫迟と统计
JavaScriptとは?
? Javaとは違います
? Webでの挙動やUIの制御によく使われている。
(表示の書き換えなど)
? ECMAScriptとして標準化
? 並列処理は実装されつつある。
? 複雑なものはライブラリを使用して計算を行
う。
→正規分布の分布関数とか定義されるわけないし
ちなみにFirefoxでコマンド
!
!
shift F4
?Shift F4
現状
? 各ブラウザがHTML5に準拠することにより
様々なことが可能に
? Firefoxだけでなくその他のブラウザもツー
ルはいろいろあります。
ちょっとしたライブラリの紹介
? d3.js データを対話的に表示するライブラリ
? http://ja.d3js.node.ws/
ちょっとしたライブラリの紹介
? jStat グラフや確率計算などのライブラリ
? http://www.jstat.org/
? Demo版はこちら → http://stat.y-misc.org/
他にも
? svmjs
? http://cs.stanford.edu/people/karpathy/
svmjs/demo/
? 今のところ、Javascriptで計算するよりも、
計算したものをJavascriptを使ってビジュア
ル化する流れ。
奥别产データ
Webを使ってデータを取得
? よくある話ではアクセスログ解析
? e.g. データコンペなど
Webで得られるデータ
? 会員データ(素性)以外
? 使っているブラウザ?バージョン
? スマホの機種名
? OS
? IPアドレス→簡単な位置やプロバイダなど
? 国名
? ページ遷移元
!
? こんなものも↓
? 画面解像度
? バッテリー残量?など
Webページのつながりを解析
? Web上の動向を追跡するページを調べる
!
!
!
!
!
!
!
!
!
Google Analyticsのコードが読み込まれていたり
奥别产と统计
奥别产と统计
(参考) Firefoxのアドオン
http://www.mozilla.org/ja/lightbeam/
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奥别产と统计