data analysis - Christophe Deschamps on Diigo

10 Nov 09

Power Pivot

Logiciel Microsoft pour faire du décisionnel à partir d'Excel 2010.

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29 Oct 09

Data360 Homepage

www.data360.org/index.aspx - Preview

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02 Oct 09

30 Resources to Find the Data You Need

Liste de ressources publiques ou privées permettant de rechercher des données (datas) dans de nombreux thèmes (géographique, monde, sport,...). Quelques liens autour du scrapping de pages web.

flowingdata.com/...rces-to-find-the-data-you-need - Preview

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24 Sep 09

Newly Declassified Files Detail Massive FBI Data-Mining Project

www.wired.com/...fbi-nsac - Preview

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08 Sep 09

How Do You Analyse A Criminal?

Un chercheur néerlandais conçoit un système probabiliste pour l'analyse de données liées aux activités criminelles.

www.sciencedaily.com/...090902122441.htm - Preview

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Within law enforcement the reliability of the data is, however, vitally important. And that is where the problem lies: the available computer models are not considered to be reliable enough.
First of all the data (for example persons) are no longer divided into classes but are organised according to the likelihood that they belong in a class.
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- Subsequently, if a classification of probability is used then the quality of the computer model can be guaranteed up to a desired level. Finally, an optimal computer model is designed for the reliable classification of data in more than two classes.

07 Sep 09

This We Know: Explore U.S. Government Data About Your Community

Interface d'exploration des données de data.gov

www.thisweknow.org - Preview

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30 Aug 09

ChartGo

Service de création de diagrammes en ligne

www.chartgo.com/index.jsp - Preview

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27 Aug 09

Swammer un outil de veille stratégique et d’intelligence économique

www.vincentabry.com/t-d-intelligence-economique-59 - Preview

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Swammer est un outil de Business Intelligence qui donne des tendances d’images et de notoriété en ligne. Plus précisément, Swammer est un outil de veille stratégique d’images.
Or ces mouvements ne sont que le produit de la médiatisation qui entoure les sociétés classées en bourse.

Notre réflexion est simple :

1- trouver et analyser tout ce qui se dit sur une firme cotée en bourse et qui concourent à ses performances,

2- mettre nos indicateurs de perceptions en relation avec les mouvements de son ou de ses titres,

3- établir une corrélation immédiate et porteuse de sens afin que les courtiers puissent prendre des décisions éclairées en temps réel.
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- Swammer est capable (via un moteur interne de nouvelle génération) de rechercher, catégoriser, filtrer, évaluer et analyser l’information concernant un objet surveillé (politicien, société, produit, concept…). Outre ce processus de gestion de l’information qui est spécifique à Swammer, ce dernier dispose d’une série d’indicateurs qualitatifs et quantitatifs uniques au monde.
- -il va rechercher des expressions précises sur un objet (compagnie, produit, service, personnalités…) présent sur le Web.
  
  -il synthétise l’ensemble des informations récupérées
  
  -il va immédiatement en un temps record (quelques secondes à peine) calculer des indicateurs de mesure d’images, de notoriété
  
  -il offre des indicateurs uniques sur la planète (KPI, KGI, KTI) ainsi que des indicateurs quantitatifs mais surtout qualitatifs qui permettent de donner du SENS à l’information recueillie

Spymaster Data Mining Report 2009

Activités de datamining des agences US

www.cryptome.info/...dni-datamine.htm - Preview

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15 Jul 09

Analysts Turn To Software For Spotting Terrorists

Petit article consacré à Palantir, un logiciel de datamining de données structurées et non-structurées utilisé par les services de renseignement US pour effectuer des recoupements et traquer les terroristes. Présente des avis contradictoires sur ces technos.

www.npr.org/...story.php - Preview

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Intelligence officials have been hoping for some time that vacuuming up vast amounts of information and putting it into a computer would uncover some sort of discernable terrorist pattern.
The technique, known as data mining, is controversial because information on the innocent, as well as potential terrorists, ends up in the same database.
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- Now it is increasingly unclear whether data mining will ever really work because terrorists don't appear to have predictive patterns.
- "We don't even have enough of a data set to get a good pattern of 'What does a terrorist look like?' " says Fred Cate of Indiana University's Center for Applied Cybersecurity Research. "And terrorists, of course, are constantly changing their patterns because, quite simply, they don't want to get caught."
- "I think, and other people who are more technically adept than I think, that's really a fool's errand."
- Using Palantir, intelligence analysts can look for links using phone and tax records, as well as the kind of data trails McGrew left behind with his morning errands.
- Unstructured data, which is the form most intelligence information comes in, are like notes in a reporter's notebook. There is a tip here, a phone call there. Palantir can search both kinds of data simultaneously. That's one of the reasons why the FBI, CIA and New York Police Department, among others, have all recently started using the software.
- The program works a bit like the Six Degrees of Kevin Bacon game. You can start with a suspect or a terrorist organization, and the software chews through a bunch of databases looking for common threads

24 Jun 09

DataLight - Online Statistical Analysis

Encore un service de cartographie de données statistiques.

www.datalightproject.com - Preview

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28 May 09

KAIZEN Analytics: Competitive intelligence for free: a practical example

Un bel exemple d'analyse en IE utilisant les outils SEO.

www.kaizen-analytics.com/...ive-intelligence-for-free.html - Preview

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Visual Business Intelligence - Are visual analysis tools poised to become pervasive?

Intéressant article sur les outils d'analyse graphique simplifiés au service de tous.
Les 5 principes ci-dessus sont détaillés dans l'article.

www.perceptualedge.com/blog - Preview

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One result that we’re beginning to see is the gradual spread of data analysis tools to organizations of all sizes (from Google to the local bakery), and their proliferation throughout all parts of those organizations
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- When the founders of Tableau Software were initially crafting their vision, they identified five core principles of visual analytics’ adoption:
  
  People adopt visual analytics primarily to help them see and understand complex data.
  People adopt visual analytics primarily to help them see and understand massive data.
  People adopt visual analytics primarily to help them see and understand new visual paradigms.
  People adopt visual analytics primarily to help them see and understand hidden insights.
  People adopt visual analytics primarily to help analysts save time.
- At the end of his presentation, Chabot reviewed his message and challenged us with these final facts:
  
  Millions of people need visual analytics technologies to help them understand information.
  The current state-of-the-art in business analytics (what most people rely on to do their jobs) is tragic.
  The primary barriers to visual analytics’ adoption are (1) awareness, (2) misperception, (3) ease of trial, (4) ease of deployment, (5) ease of use, and (6) ease of price.

PNNL: Starlight - Introduction

Bel outil d'aide à l'analyse de données pour l'IE. Payant.

starlight.pnl.gov/introduction.stm - Preview

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Website Analytics vs. Competitive Intelligence Metrics

A survey of 25 blogs in the search space comparing external metrics to visitor tracking data

www.seomoz.org/...search-blog-stats - Preview

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Dshbrd: Your Analytics Dashboard

Une interface graphique pour analyser vos données Google Analytics

dshbrd.com - Preview

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22 May 09

Axiis : Data Visualization Framework

Axiis is an open source data visualization framework designed for beginner and expert developers alike.

www.axiis.org - Preview

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18 May 09

Personal technology: Phoning in data

Excellent article présentant l'utilisation de téléphones portables dans le cadre d'études scientifiques diverses. Ou comment nous devenons tous des capteurs qui font de nous des "citizens scientists".

www.nature.com/...458959a.html - Preview

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Such moments are happening more and more often these days, as researchers seek out innovative ways to exploit mobile phones.
Phones are increasingly being equipped with not only accelerometers, but also cameras, Global Positioning System (GPS) receivers and Internet connectivity. Many of them can support programs devised by anyone, not just the phone's manufacturer, which means that digitally savvy scientists can write and distribute mobile-phone software for everything from monitoring traffic to reporting invasive species.
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- "We've really never had a technology other than human observation itself that is as pervasively deployed out in the world,"
- This makes mobile phones a natural tool to study road traffic,
- But mobile phones could provide a cheaper way to collect the information, because scientists can piggyback on the phone companies' existing communications infrastructure.
- In November last year, Bayen's team launched Mobile Millennium: a project to generate real-time traffic estimates with GPS-enabled mobile phones in a region near San Francisco. Volunteers download the software and transmit their position and velocity to a central computer system.
- Because mobile phones can travel into areas that lack other sensors, they are revealing traffic flow on smaller, previously unmonitored roads outside the highway system
- with a mobile phone, Rubinsky reasoned, a doctor in a remote village could transmit raw measurements from a relatively inexpensive data-collection device, such as an ultrasound transducer, to a processing centre in a major city. The centre would then reconstruct the image and transmit it back to the phone.
- Other groups are creating mobile-phone applications to conduct health surveys, analyse blood samples and report natural disasters.
- Mobile phones also have the potential to enhance the role of the citizen scientist. Information collected by non-scientists has traditionally been seen as suspect because it is difficult to verify, says Estrin. But with the help of mobile-phone cameras and GPS, which can label data with a precise location, observations taken by everyday citizens could become more reliable. "The fact that people can do real-time uploading of geo-tagged information changes that story,"
- Estrin's team is working on a set of projects that will enlist citizens to submit field observations via mobile phone to a central database.
- the team also plans to supply a phone-based reporting system for Project BudBurst, a citizen-science effort to measure the effect of climate change on plant blooming.
- Lukac and his colleagues are hoping to deploy a test set of accelerometer-equipped phones in an earthquake-prone area and eventually establish a mobile seismic network.
- Mobile phones may "open up the demographics of the people who could participate" in citizen science, says Jeff Goldman, director of programme development at CENS
- arah Williams, director of the Spatial Information Design Lab at Columbia University in New York, and her colleagues are working to attach air-quality sensors to mobile phones so that people can send pollution measurements via text message to a central database.
- Using the phone data, Eagle's team was able to classify students studying business from those studying other subjects with 96% accuracy. If the researchers examined only the first 12 hours of a user's day, they could correctly predict the person's movements for the rest of the day 79% of the time⁶
- "In reality, and depressingly, you can compress my behaviour down to a few vectors,"
- Eagle hopes to detect common behavioural patterns, such as changes in movement or calling frequency, that occur during disease outbreaks, which could help alert public-health officials to the early stages of an epidemic.
- Eagle's research illustrates how mobile phones can be used to collect accurate, large-scale data about real social interactions, unlike other methods such as interviews or virtual-world observations,
- At the other end of the spectrum, some groups are exploring public-health applications at the individual level.
- Despite the challenges, researchers are excited about the possibilities of a planet-wide network of these miniature travelling computers. About 85% of the world's population has access to a mobile signal, says Susan Teltscher, head of the Market Information and Statistics Division at the International Telecommunication Union,
- Although mobile phones will not replace traditional scientific instruments, says Estrin, they make up in availability for what they lack in finesse. "If you can't go to the field with the sensor you want," she says, "go with the sensor you have."

14 Apr 09

Music that makes you dumb

Après les livres qui rendent idiot Virgil Griffith remet ça avec la musique. Si vous êtes fan de Lil Wayne, Beyonce ou Jay-Z euh....

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