250 search results for "market research"

In case you missed it: September Roundup

October 7, 2011
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In case you missed them, here are some articles from September of particular interest to R users. The deadline to enter the "R Applications" contest with $20,000 in prizes is October 31. The RHadoop Project, a new collection of open-source R packages from Revolution Analytics, makes it possible to write map-reduce jobs in R to analyze huge data sets...

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Adding a volatility filter with VIX

October 2, 2011
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Adding a volatility filter with VIX

We saw in the basic system how we could add a factor, namely the 200 day moving average, to improve the overall performance of our system. You could spend a lot of time playing with different moving averages, and different combinations of crossovers if...

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Dollars and cents: How are you at estimating the total bill?

September 30, 2011
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Dollars and cents: How are you at estimating the total bill?

When estimating the cost of a bunch of purchases, a useful heuristic is rounding to the nearest dollar. (In fact, on US income tax returns, one is allowed to omit the cents). If prices were uniformly distributed, the following two heuristics would be equally accurate:* Rounding each item up or down to the nearest dollar and summing * Rounding each...

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Are new SEC rules enough to prevent another Flash Crash?

September 22, 2011
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Are new SEC rules enough to prevent another Flash Crash?

At 2:42PM on March 10 2010, without warning, the Dow Jones Industrial Index plunged more than 1000 points in just 5 minutes. It remains the biggest one-day decline in this stock market index in history. On an intra-day basis, anyway: by the end of the day, the market had regained 600 points of the drop. At the time, the...

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Datasets to Practice Your Data Mining

September 16, 2011
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Datasets to Practice Your Data Mining

There are many datasets available online for free for research use. Some of them are listed below. - The R Datasets Package: There are around 90 datasets available in the package. Most of them are small and easy to feed … Continue reading →

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How Lloyd’s of London uses R for Insurance

September 15, 2011
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How Lloyd’s of London uses R for Insurance

Lloyd's is the world's leading specialist insurance market, and is often the first to insure new, unusual or complex risks. So it's no surprise that Lloyd's is one of the many companies that use R and its advanced capabilities for data analysis to help manage its insurance risks. At the useR! conference last month, Lloyd's analysts Markus Gesmann, Viren...

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Backtesting a Simple Stock Trading Strategy

September 13, 2011
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Backtesting a Simple Stock Trading Strategy

Note: This post is NOT financial advice!  This is just a fun way to explore some of the capabilities R has for importing and manipulating data.  I recently read a post on ETF Prophet that explored an interesting stock trading strategy in Ex...

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SIGKDD 2011 Conference — Days 2/3/4 Summary

August 27, 2011
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SIGKDD 2011 Conference — Days 2/3/4 Summary

<< My review of Day 1. I am summarizing all of the days together since each talk was short, and I was too exhausted to write a post after each day. Due to the broken-up schedule of the KDD sessions, I group everything together instead of switching back and forth among a dozen different topics. By far the most enjoyable...

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25+ more ways to bring data into R

August 26, 2011
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25+ more ways to bring data into R

The rdatamarket post on the Revolutions blog and this post on Decision Stats reminded me about my list of Data APIs/feeds available as packages in R on Cross-Validated (which is a great site that you all should use).  Many of these packa...

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SIGKDD 2011 Conference — Day 1 (Graph Mining and David Blei/Topic Models)

August 22, 2011
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SIGKDD 2011 Conference — Day 1 (Graph Mining and David Blei/Topic Models)

I have been waiting for the KDD conference to come to California, and I was ecstatic to see it held in San Diego this year. AdMeld did an awesome job displaying KDD ads on the sites that I visit, sometimes multiple times per page. That’s good targeting! Mining and Learning on Graphs Workshop 2011 I had originally planned to attend the...

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