Author Archives: Pat
Blog-via-email system revised
The new system of sending blog posts via email should go live today. Actually it should have gone live yesterday, but I’m a dunderhead. That it didn’t go live yesterday means that members of the email gang may have missed: “Random portfolios versus Monte Carlo”. If you want to receive the blog via email: a … Continue reading
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Random portfolios versus Monte Carlo
What is the difference between Monte Carlo — as it is usually defined in finance — and random portfolios? The meaning of “Monte Carlo” The idea of “Monte Carlo” is very simple. It is a fancy word for “simulation”. As usual, it is all too possible to find incredibly muddied explanations of such a simple … Continue reading
Posted in R language, Random portfolios
Tagged Monte Carlo in finance, personal pension planning
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US market portrait 2012 week 27
US large cap market returns. Fine print The data are from Yahoo Almost all of the S&P 500 stocks are used The initial post was “Replacing market indices” The R code is in marketportrait_funs.R
Normal service resumed?
After a few weeks of feed problems with the blog, we are hoping that everything is sorted. In the next few days a choice to receive the blog via email should appear wherever you can sign up to the newsletters. You should not sign up via Feedburner. If you have already been receiving the blog … Continue reading
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Change of RSS feed
Due to problems with Feedburner, we are changing the RSS feed. If you subscribe via RSS, then you will need to resubscribe (after some brief period). Email subscriptions should transfer okay (though you should not expect to get this post via email). But there is some possibility that some will get dropped. Sorry for the … Continue reading
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Release of Portfolio Probe version 1.05 plus blog problems
June has been a good month for releases of Portfolio Probe and a bad month for disseminating the blog. Version 1.05 This is a minor release, primarily to fix some bugs, but a little sugar slipped in as well. bug: when forced trades created a portfolio that satisfied all of the constraints, then all “random” … Continue reading
Posted in Portfolio Probe
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US market portrait 2012 week 26
US large cap market returns. Fine print The data are from Yahoo Almost all of the S&P 500 stocks are used The initial post was “Replacing market indices” The R code is in marketportrait_funs.R Subscribe to the Portfolio Probe blog by Email
Two new, important books on R
Two books were recently published that are sure to help R grow even faster. R has a reputation, partially deserved, for being hard to learn. These books will help. The first makes learning easier, the second can make learning less necessary for initiates. I have not yet touched either book. R for Dummies The authors … Continue reading
Posted in Book review, R language
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To R or not to R, and other events
New events To R, or not to R, that is the question The Statistical Computing Section of the Royal Statistical Society presents a one-day event on 2012 June 29. The details of the day. See in particular the abstract for “Teaching statistics: a pain in the R?” by Andy Field — it involves a sheepdog … Continue reading
Posted in Events, R language
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