How to develop internet apps with R and Node （如何开发互联网应用R和节点）.pdfVIP

How to develop internet apps with R and Node.js Alberto Santini Monte dei Paschi di Siena Outline ● What is ConPA? ● ConPA Architecture. ● Frontend with Yahoo! User Interface library. ● Backend with Node.js. ● node-rio, a Node.js module integrating R via Rserve. ConPA: open source finance app ConPA is an asset allocation application. It provides the optimal weights for each assets, retrieving the historical prices from Yahoo! Finance, applying the constraints and optimizing the weights with the Markowitz algorithm. It provides also the performances of the portfolio and the implied volatility of the assets. Why R and JavaScript? source: ConPA Architecture Frontend with YUI YUI is a free, open source JavaScript and CSS framework for building anything from simple non-interactive views to rich applications with URL-based routing, data binding, and full client-server synchronization. Y.io(/ConPA/getOptimalPortfolio, { method: POST, data: ptfData, // object literal containing assets, constraints, etc. on: { success: function (id, o) { // callback var res = JSON.parse(o.responseText); ... // res contains the response. } ... // handling failure callback, timeout, etc. } }); Node.js Node.js is a platform built on Chromes J