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Crossfilter Fast Multidimensional Filtering for Coordinated Views Crossfilter is a JavaScript library for exploring large multivariate datasets in the browser. Crossfilter supports extremely fast (<30ms) interaction with coordinated views, even with datasets containing a million or more records; we built it to power analytics for Square Register, allowing merchants to slice and dice their payment history fluidly. Since most interactions only involve a single dimension, and then only small adjustments are made to the filter values, incremental filtering and reducing is significantly faster than starting from scratch. Crossfilter uses sorted indexes (and a few bit-twiddling hacks) to make this possible, dramatically increasing the performance of live histograms and top-K lists.
The Open Source Definition Open source doesn't just mean access to the source code. The distribution terms of open-source software must comply with the following criteria: 1. Free Redistribution The license shall not restrict any party from selling or giving away the software as a component of an aggregate software distribution containing programs from several different sources.
KoBoSync User Guide KoBoSync is a post processor and is used after data collection to synchronize data from the Android devices onto a local computer, and then to aggregate individual survey records into a simple database. The Comma Separated Value data can be imported into many kinds of analytical software packages (R, SPSS, or SAS). The CSV can be viewed easily in Excel or another spreadsheet software. Data ware house Comercio Minorista Utilizan grandes sistemas de Procesamiento Paralelo Masivo para acceder a meses o años de historia transaccional tomada directamente en los puntos de venta de cientos, o miles, de sucursales. Con esta información detallada pueden efectuar en forma más precisa y eficiente actividades de compra, fijación de precios, manejo de inventarios, configuración de góndolas, etc. Las promociones y las ofertas de cupones son seguidas, analizadas y corregidas. Modas y tendencias son cuidadosamente administradas a efectos de maximizar utilidades y reducir costos de inventario. El stock es reasignado por sucursales o regiones según ventas y tendencias.
Emgu CV: OpenCV in .NET (C#, VB, C++ and more) Open Source : avantages et inconvénients Quelle différence entre logiciel libre et Open Source ? Le logiciel libre est distribué avec son code source. Une licence définit légalement les conditions de copie et de redistribution pour que le logiciel reste libre. L'Open Source repose davantage sur une logique commerciale. The R Project for Statistical Computing ¿Qué es Big Data? Todos formamos parte de ese gran crecimiento de datos Ricardo Barranco FragosoPublicado en 18-06-2012 1. Introducción El primer cuestionamiento que posiblemente llegue a su mente en este momento es ¿Qué es Big Data y porqué se ha vuelto tan importante?
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