Monthly Archives: February 2011

Rapidminer 5.0 Video Tutorial #14 – Web Mining Financial Web Sites – Part 1

In this Rapidminer Video Tutorial I show the user how to use the web crawling and text mining operators to download 4 web pages, build a word frequency list, and then check out the similarities between the web sites.

[flashvideo file=wp-content/uploads/2011/02/Rapidminer5-Vid14.mp4 /]

Hat tip to Neil at and the Rapid-I team.


Quantmod Package in R

I finally discovered the quantmod package for R, and I’m finally getting around to learning the darn software.  I think I’m going to abandon learning Python because R appears to do everything that I needit to do, AND it just so happens to be integrated with Rapidminer.

Check out this simple graph I created of $XOM using R.  It took me two lines of code to generate it.



Rapidminer 5.0 Video Tutorial #13 – Parameter Optimization

In this Rapidminer Video Tutorial I show the user how to use the Parameter Optimization operator to optimize your trained data.  The example shows how Rapidminer iterates the learning rate and momentum for a Neural Net Operator to increase the performance of the trained data set.

[flashvideo file=wp-content/uploads/2011/02/Rapidminer5-Vid13.mp4 /]

Video #14 will be about web mining financial text data.

Suspending Forum Member Registration Temporarily

I’m temporarily suspending my forum member registration because I’m getting bombarded by spammers.  They register and then try to post spam. As a failsafe the spam gets caught up in the moderation queue but it takes up too much of my time to weed through the real posts and the crap.

So if you’re not a spammer and want to join the forum, drop me an email and let me know who you are and why you want to join.  I’ll let you in the backdoor.

PS: In case you haven’t been around, I’m actually answering forum posts again.

PPS: If you’ve registered and have zero posts, be prepared to be deleted.

Silver and American Eagles

It’s probably no surprise to my readers that in addition to trading and building neural net models, I like to collect coins and paper money, especially paper money that’s worthless. My approach to coin to collecting is simple; collect items I like and add in a few items for their metal value (gold and silver). I probably do more collecting nowadays than trading because the markets have become one highly frequent casino.

For those readers who live under rocks, the price for gold and silver has been on a tear upwards over the past few years.  There have been a few scary pullbacks, but the overall trend is still higher.  Overtime these trends tend to attract the “dumb money” and I suspect its happening now.

Why? Well the US mint suspended production of the 2010 Silver American Eagle due to unprecedented demand! Granted this is old news but the 2011 Silver American Eagle won’t be available till July 2011.

This comes right after the suspension of the 2010 Gold American Eagle and the discontinuation of fractional Gold American Eagle coins.

The trick is knowing when to sell your gold and silver,  but in all honesty I’d have a hard time giving up my Eagles. They’re so shiny and preciousssssss.