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Pulse of the Nation: U.S. Mood Throughout the Day inferred from Twitter

Pulse of the Nation: U.S. Mood Throughout the Day inferred from Twitter
Click for high-resolution PDF version (11MB) Video A time-lapse video of the maps, cycled twice, is available below (best viewed at 720p): Mood Variations A number of interesting trends can be observed in the data. First, overall daily variations can be seen (first graph), with the early morning and late evening having the highest level of happy tweets. Similar variations were discovered independently by Michael Macy and Scott Golder, and first reported in the talk "Answers in Search of a Question" at the New Directions in Text Analysis Conference in May 2010. Weekly Variations Weekly trends can be observed as well, with weekends happier than weekdays. About the Data and Visualization The plots were calculated using over 300 million tweets (Sep 2006 - Aug 2009) collected by MPI-SWS researchers [1], represented as density-preserving cartograms. About Cartograms A cartogram is a map in which the mapping variable (in this case, the number of tweets) is substituted for the true land area. Coverage

Search engine data visualisations « Search insights I’ve decided I need a single place to put all of the search engine data visuals that I’ve been working on. The visuals are made up of thousands of actual queries put into search engines by UK users over the course of a year. This gives us an idea of ‘search demand’ which can/may/should equal actual, offline demand for a topic. Feel free to republish however please link to this blog and also to James Webb who helped to create them.

The geography of Tweets Give every Twitter user a brush and they will paint you the world — if they geotag their Tweets. Those of us on the Visual Insights team are obsessed with the patterns that emerge from aggregated Tweets over time. A continuing curiosity is about the geographical shapes that surface in geotagged Tweets. Physics Simulations and Artwork Here is a 3D view of a hydrogren atom in the 4f state. The left image was made in C++ using a technique described by Krzysztof Marczak to make it volumetric like a cloud of smoke. The right image was made in Mathematica by adding 2D cross-sectional layers.

Command Line Shell For SQLite Small. Fast. Reliable.Choose any three. The SQLite project provides a simple command-line utility named sqlite3 (or sqlite3.exe on windows) that allows the user to manually enter and execute SQL statements against an SQLite database. This document provides a brief introduction on how to use the sqlite3 program. Visualized: Over 4 Million Micro-Loans Fly Around the Globe Kiva is a company that facilitates micro-loans between people from all over the world; incidentally, nothing to do with the Finnish KiVA. With the help of this non-profit, anyone can donate as little as $25 or as much as the sum of any single loan — you can read the stories of many different people seeking financial support across the globe; there are students, farmers, entrepreneurs and those looking to improve their physical living conditions. Kiva released a video visualizing the micro-loans that happened across the world in its five-year lifespan — a total of 4 million loans in 4 minutes: 620,000 lenders funding 615,000 entrepreneurs. Get inspired, and make a loan today — it’s a simple way to help a real person.

Twitter StreamGraphs A StreamGraph is shown for the latest 1000 tweets which contain the search word. The default search query is 'data visualization' but a new one can be typed into the text box at the top of the application. You can also enter a Twitter ID preceded by the '@' symbol to see the latest tweets from that user. Data visualization Data visualization or data visualisation is viewed by many disciplines as a modern equivalent of visual communication. It is not owned by any one field, but rather finds interpretation across many (e.g. it is viewed as a modern branch of descriptive statistics by some, but also as a grounded theory development tool by others). It involves the creation and study of the visual representation of data, meaning "information that has been abstracted in some schematic form, including attributes or variables for the units of information".[1] A primary goal of data visualization is to communicate information clearly and efficiently to users via the information graphics selected, such as tables and charts. Effective visualization helps users in analyzing and reasoning about data and evidence. It makes complex data more accessible, understandable and usable.

Tutorial on Bayesian Networks with Netica 1. What is a Bayes net? A Bayes net is a model. It reflects the states of some part of a world that is being modeled and it describes how those states are related by probabilities. The model might be of your house, or your car, your body, your community, an ecosystem, a stock-market, etc. Absolutely anything can be modeled by a Bayes net.

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