"in R something like that:
library(randomForest)
rft= tuneRF(Xvars, Yvar, stepFactor=1.2, doBest=T)
rfi<- rft$importance;
barplot(rfi[order(- rfi)])
"
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Alex Zolot
- San Diego, CA
- United States
- Blog Posts (1)
- Discussions (3)
- Groups (14)
- Photos (1)
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Alex Zolot's Groups
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Quant Jobs | QUANTster.c…
179 members
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Web Analytics
425 members
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Platinum Members
108 members
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PMML
83 members
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R-Project and Other Free…
253 members
Alex Zolot's Page
Latest Activity
Alex Zolot replied to Vincent Granville's discussion Why Tables Are Really Much Better Than Graphs (by Andrew Gelman) in the group Statistical Graphics, Data Visualization
"You missed the most important part of the cited article - date of publication."
Alex Zolot replied to Steffen Springer's discussion Is R's apply-family only syntactic sugar in the group R-Project and Other Free Software Tools
"> N=1:1000000; st= system.time
> xx=data.frame(i=N, x=N)/100
> st({A=sum(xx$x); B=sum(xx$i); print(c(A,B))})
[1] 5000005000 5000005000
[1] 0.02
> st({A=B=0
+ for(i in N){A=A+xx[i,1]; B=B+xx[i,2]}
+ print(c(A,B))
+ })
[1] 5000005000…"
Alex Zolot replied to Urko's discussion Odds ratios graphs in the group R-Project and Other Free Software Tools
"example of your code, plz"
Alex Zolot replied to Vincent Granville's discussion Google 3.0 - The next great innovation in search technology in the group Web Analytics
"See e.g. www.googmeter.com"
Alex Zolot replied to Vincent Granville's discussion Watching the Growth of Walmart Across America in the group Statistical Graphics, Data Visualization
"Thanks, beautiful.
Original http://hindsight.trulia.com/map/#lat=33.101&lon=-117.279&zoom=11&mix=0.540 map is nice also."
Alex Zolot replied to Arun's discussion Text Mining in the group Excel Analytics
"I think you can use existing solutions. Take look at http://cran.r-project.org/web/views/Bayesian.html, http://cran.r-project.org/web/views/NaturalLanguageProcessing.html"
Profile Information
- Short Bio:
- I am a Senior Statistician/ Sr. SW Engineer at Sun Microsystems. Formerly I was an Analytic Science Manager and a Lead Scientist at Fair Isaac Corp, managed and executed data mining projects for Kraft Foods, Visa, Discover Financial, Cox Communications,....
My fields of expertise include statistical analysis and modeling, and data mining, mainly predictive analytics. I have a Ph.D in Theoretical and Mathematical Physics, and a Ph.D. in Economics.
- My Website or LinkedIn Profile (URL):
- http://zolot.us
- Field of Expertise:
- Data Mining, Finance, Marketing Databases, SAS, Web Analytics, Industrial Statistics, Statistical Consulting
- Years of Experience in Analytical Role:
- 16
- Professional Status:
- Technical, Manager, Consultant
- Interests:
- Finding a New Position, Networking
- What is your Favorite Data Mining or Analytical Website?
- http://GoogMeter.com
- What Other Analytical Website do you Recommend?
- http://GoogMeter.com
- Your Company:
- Sun Microsystems Inc
Alex Zolot's Photos
Alex Zolot's Blog
GoogMeter compares anything
| A lot of companies spend a lot of time and money to get data related to customer preferences and behavior. At the same time huge amount of data can be extracted directly from Internet. Usually to get knowledge about some objects from Internet we use two stage process:
|
Posted on June 5, 2008 at 7:00am
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