288 search results for "market research"

Pull Yahoo Finance Key-Statistics Instantaneously Using XML and XPath in R

October 29, 2012
By
Pull Yahoo Finance Key-Statistics Instantaneously Using XML and XPath in R

This two-part blog post I published a day ago required key-stats from Yahoo Finance for all the companies in the control group I created for my research.  I wanted all the key-stats pulled, arranged in a data-frame and then present them side-...

Read more »

CFP: DMApps 2013 – Workshop on Data Mining Applications in Industry and Government, submission due by Jan 6, 2013

October 19, 2012
By
CFP: DMApps 2013 – Workshop on Data Mining Applications in Industry and Government, submission due by Jan 6, 2013

CALL FOR PAPERS DMApps 2013: the International Workshop on Data Mining Applications in Industry & Government In conjunction with PAKDD 2013, Gold Coast, Australia, April 14-17, 2013 http://dmapps2013.rdatamining.com The 2013 International Workshop on Data Mining Applications in Industry & Government … Continue reading →

Read more »

Vice Presidential Debates with qdap-beta

October 13, 2012
By
Vice Presidential Debates with qdap-beta

After the presidential debates I used the beta version of qdap to provide some initial surface level analysis (LINK to Presidential Debates with qdap-beta). In the comments of that post, annon (a commenter) provided a link to an analysis/visualization that … Continue reading →

Read more »

Emerging as Low Vol

October 2, 2012
By
Emerging as Low Vol

Extending the series begun with When Russell 2000 is Low Vol, I thought I should take a look at Emerging Market stocks during periods of low relative volatility to the S&P 500.  So you can replicate even without access to expensive data, let

Read more »

A Brief Tip on Generating Fractional Factorial Designs in R

October 1, 2012
By

A number of marketing researchers use the orthoplan procedure in SPSS to generate fractional factorial designs.  It is not surprising, then, that I received a number of questions concerning the recent article in the Journal of Statistical Software by Hideo Aizaki on “Basic Functions for Supporting an Implementation of Choice Experiments in R.”  To summarize their issues,...

Read more »

Using R in Political Controversies: Unemployment Reduction Prowess Under Bush versus Obama Years

September 27, 2012
By
Using R in Political Controversies: Unemployment Reduction Prowess Under Bush versus Obama Years

Editor’s note: R-bloggers does not take a political side. Since this is an important topic, this post has the comments turned on. Also, If you wish to write a reply post (which includes an R context), you are welcome to contact me to have it published. This post was written by Prof. H. D. Vinod. Fordham University, New York.

Read more »

Association Rule Learning and the Apriori Algorithm

September 26, 2012
By
Association Rule Learning and the Apriori Algorithm

Association Rule Learning (also called Association Rule Mining) is a common technique used to find associations between many variables. It is often used by grocery stores, retailers, and anyone with a large transactional databases. It’s the same way that Target knows your pregnant or when you’re buying an item on Amazon.com they know what else you want

Read more »

Learning Kernels SVM

September 25, 2012
By
Learning Kernels SVM

Machine Learning and Kernels A common application of machine learning (ML) is the learning and classification of a set of raw data features by a ML algorithm or technique. In this context a ML kernel acts to the ML algorithm … Continue reading →

Read more »

Podcast interview with Michael Kane

September 17, 2012
By

In this podcast interview with Michael Kane, Data Scientist and Associate Researcher at Yale University, Michael discusses the R statistical programming language, computational challenges associated with big data, and two projects involving data analysis he conducted on the stock market "flash crash" of May 6, 2010, and the tracking of transportation routes bird flu H5N1. Michael also...

Read more »

Slightly-more-than-basic sentiment analysis

September 14, 2012
By

I became interested in sentiment analysis a few months ago as a matter of pure practicality. The company I work for does a lot of customer-satisfaction surveys. Respondents rate various aspects of our products, but they also have the opportunity to answer a bunch of open-ended questions in their own voices. That kind of information

Read more »