1265 search results for "Excel"

Rotational Trading Strategies: borrowing ideas from Engineering Returns

December 19, 2011
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Rotational Trading Strategies: borrowing ideas from Engineering Returns

Frank Hassler at Engineering Returns blog wrote an excellent article Rotational Trading: how to reduce trades and improve returns. The article presents four methods to reduce trades: Trade less frequently. I.e. weekly instead of daily rebalancing. Different criteria for enter / exit a trade. Smooth the rank over the last couple of bars. Combination of

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The R Journal (Volume 3/2, December 2011) is out

December 19, 2011
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The new R journal for December 2011 is out! You can Download the complete issue from here, while refereed articles may be downloaded individually using the links below: Table of Contents Editorial 3   Contributed Research Articles   Creating and Deploying an Application with (R)Excel and R  Thomas Baier, Erich Neuwirth and Michele De Meo 5 glm2: Fitting Generalized Linear Models...

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Spatial Data with R

December 19, 2011
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Spatial Data with R

On September 14th 2011 Dr Alec Stephenson gave a talk on exploring spatial data with R (see Meetup page). The video of the talk is now available online. The talk provides a non-mathematical and entirely equation-free talk on visualizing and … Continue reading →

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data.frame objects in R (via “R in Action”)

December 18, 2011
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data.frame objects in R (via “R in Action”)

The followings introductory post is intended for new users of R.  It deals with R data frames: what they are, and how to create, view, and update them. This is a guest article by Dr. Robert I. Kabacoff, the founder of (one of) the first online R tutorials websites: Quick-R.  Kabacoff has recently published the book ”R Read more...

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IRIS Flower Data Set (R-001)

December 17, 2011
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IRIS Flower Data Set (R-001)

IRIS Flower Data SetEste es el Link a Wikipedia donde podéis encontrar los datos que utilizó Fisher en su trabajo de 1936. Ya hemos trabajado con estos datos en Excel y los continuaremos usando en nuevas entradas.En este link, podemos ver las fotos de las flores (IRIS en castellano son lírios).Represento como LS (longitud del sépalo), AS...

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The Bay Area R User Group Meeting on Data Mining with R

December 16, 2011
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By Joseph Rickert Put up a poster that says something like “Data Mining with R” anywhere in the Bay Area and you will surely draw a crowd. But it was still a bit of a surprise that the monthly meeting of the Bay Area R User’s group was so well attended. At one point there were 160 people on...

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EMC survey differentiates BI and Data Science

December 15, 2011
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EMC survey differentiates BI and Data Science

EMC last week published the results of a survey of 462 IT decision makers who self-identified as either a data scientist or business intelligence professional (plus 35 invitees who were attendees at the EMC Data Scientist Summity and/or Kaggle competitors). There's a nice summary of the conclusions at the EMC blog, (where data scientists are described as "The New...

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List of public databases from the Washington Post

December 14, 2011
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The Washington Post has put together an excellent list of publicly-accessible databases, ideal for analysis using the R language. You'll find databases from the domains of Census and Demographics (for example, the American Community Survey), Crime and Courts (like this list of federal prosecutions), Transportation and Development (e.g. older driver crash statistics); Health and Safety; Real Estate and Business;...

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Exploring Your Voter File with R

December 12, 2011
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Exploring Your Voter File with R

We perform a voter file analysis for Wake County, NC using R.

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UseR! 2011 slides and videos – on one page

December 11, 2011
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Links to slides and talks from useR 2011 - all organized in one page.Read more »

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