Interactive maps with R
Posted by Armando Brito Mendes | Filed under software, visualização
Bibliotecas para construir mapas com alguma interação no R
You can make static maps in R relatively well, if you know what packages to use and what to look for, but there isn’t much direct interaction with your graphics. rMaps is a package that helps you create maps that you can mouse over and zoom in to.
Don’t get too excited though. A scan of the docs shows that it’s basically a wrapper around JavaScript libraries Leaflet, DataMaps and Crosslet, so you could learn those directly instead, and you’d be better for it in the long run if you plan to make more maps. But if you’re just working on a one-off or must stay in R because your life depends on, rMaps might be an option.
Tags: data mining, desnvolvimento de software, mapas, R-software
A fábrica de Lego e o Lean Six Sigma
Posted by Armando Brito Mendes | Filed under materiais ensino, planeamento, videos
Uma animação com exemplo de aplicação do lean six sigma
Neste vídeo, uma fábrica de Lego cuja situação era de caos e desastre torna-se um exemplo de gestão, após a aplicação dos conceitos de Lean Six Sigma.
Tags: análise de sistemas, definição, gestão de projetos, modelos empresariais
The Dangers of Bling Data Visualizations
Posted by Armando Brito Mendes | Filed under estatística, visualização
Excelente de descrição de erros em visualização
The Dangers of Bling Data Visualizations
Given the volume of information that’s pouring into the enterprise from so many disparate sources, knowledge workers need to be able to visualize information in order to analyze it and extrapolate insights effectively.
When business users can visualize information, they’re able to process it more effectively and make faster and better decisions, according to Aberdeen research. Business users are constantly seeking the best ways to understand the data behind the data. If a monthly sales figure is low, what are the reasons the sales team is underperforming? The most effective way to help business users understand the data behind the data is by making it visual for them.
Data visualization has recently made its way into the mainstream by the way of infographics, business intelligence dashboards and, in some cases, statistical graphics. However, today data visualization comes in many forms and more often than not there might be too much “bling” incorporated into these data representations, leaving an audience with nothing more than a pretty picture. In this article, we contrast some good and bad examples of visualizations via examination of the salient features of the graphical displays. We will also demonstrate how poorly designed visualizations can lead to erroneous decisions.
Tags: big data, data mining, Estat Descritiva
Learn R interactively with the swirl package
Posted by Armando Brito Mendes | Filed under estatística, materiais ensino, software
Um pacote R para construir lições interativas
swirl is a software package for the R statistical programming language. Its purpose is to teach users statistics and R simultaneously and interactively.
Tags: data mining, desnvolvimento de software, R-software, software estatístico
How R came to be
Posted by Armando Brito Mendes | Filed under estatística, software, videos
Uma entrevista sobre como surgiu o R
How R came to be
Statistician John Chambers, the creator of S and a core member of R, talks about how R came to be in the short video below. Warning: Super nerdy waters ahead.
Tags: desnvolvimento de software, R-software, software estatístico
History through the president’s words
Posted by Armando Brito Mendes | Filed under visualização
Uma excelente visualização baseada em Text Mining
History through the president’s words
By Kennedy Elliott, Richard Johnson and Ted Mellnik, Published: Jan. 28, 2014
Since 1900, there have been 116 State of the Union addresses, given by 20 presidents, with some presidents giving two addresses a year. Studying their choice of words, over time, provides glimpses of change in American politics—“communism” fades, “terrorism” increases—and evidence that some things never change (“America” comes up steadily, of course. As does “I.”). Wayne Fields, a professor of English and American Culture Studies at Washington University in St. Louis, and Mark Liberman, a linguist at the University of Pennsylvania, offered their analysis of the meaning behind the words the presidents used.
Download graphic
Tags: belo, data mining, text mining
Como otimizar um processo de negócio
Posted by Armando Brito Mendes | Filed under Investigação Operacional, software
Business Process Management (BPM) explicado por um consultor
Neste artigo apresentarei uma técnica prática e eficaz para o aprimoramento dos processos corporativos, o mapeamento de processos. Esta técnica é apenas a ponta do iceberg de um tema muito mais abrangente denominado Business Process Management (BPM), ou Gestão por Processos de Negócio. Explicarei brevemente a metodologia de BPM, seus benefícios e ferramentas, mas o foco de nossa conversa é o primeiro passo desta metodologia o MAPEAMENTO DE PROCESSOS.
Tags: análise de sistemas, definição, modelos empresariais, qualidade
Docear – The Academic Literature Suite
Posted by Armando Brito Mendes | Filed under materiais para profissionais, refs bibliográficas, software
Excelente software de gestão documental para escrever teses \ artigos
Docear is a unique solution to academic literature management, i.e. it helps you organizing, creating, and discovering academic literature. Among others, Docear offers:
- A single-section user-interface that allows the most comprehensive organization of your literature. With Docear, you can sort documents into categories; you can sort annotations (comments, bookmarks, and highlighted text from PDFs) into categories; you can sort annotations within PDFs; and you can view multiple annotations of multiple documents, in multiple categories – at once.
- A ‘literature suite concept‘ that combines several tools in a single application (pdf management, reference management, mind mapping, …). This allows you to draft your own papers, assignments, thesis, etc. directly in Docear and copy annotations and references from your collection directly into your draft.
- A recommender system that helps you to discover new literature: Docear recommends papers which are free, in full-text, instantly to download, and tailored to your information needs.
And did we mention that Docear is free, open source, available for Windows, Linux, and Mac OS X, and not evil?
Tags: gestão de projetos, motores de busca, text mining
In flight: see the planes in the sky right now
Posted by Armando Brito Mendes | Filed under visualização
Espantosa visualização de todos os aviões no ar, neste momento
To mark 100 years of passenger air travel, our stunning interactive uses live data to show every one of the thousands of commercial planes currently in the air, charts the history of aviation since 1914, and asks what comes next for the industry.
Kiln and the Guardian explored the 100-year history of passenger air travel, and to kick off the interactive is an interactive map that uses live flight data from FlightStats. The map shows all current flights in the air right now. Nice.
Be sure to click through all the tabs. They’re worth the watch and listen, with a combination of narration, interactive charts, and old photos.
And of course, if you like this, you’ll also enjoy Aaron Koblin’s classic Flight Patterns.
Tags: belo, big data, data mining
Music Timeline
Posted by Armando Brito Mendes | Filed under visualização
Mais uma excelente visualização interativa de dados dos labs da google
Two Google research groups, Big Picture and Music Intelligence, got together and made a music timeline baby.
The Music Timeline shows genres of music waxing and waning, based on how many Google Play Music users have an artist or album in their music library, and other data (such as album release dates). Each stripe on the graph represents a genre; the thickness of the stripe tells you roughly the popularity of music released in a given year in that genre. (For example, the “jazz” stripe is thick in the 1950s since many users’ libraries contain jazz albums released in the ’50s.) Click on the stripes to zoom into more specialized genres.
As you’d expect, the initial view is a stacked area chart that represents the popularity of genres over time, which feels fairly familiar, but then you interact with the stacks and it gets more interesting and almost surprisingly fast. The best part is the pointers to specific albums as you mouse over.
Tags: belo, big data, data mining, DW \ BI
