Back in 2011, I covered the relative performance difference of the most popular libraries for text processing in R and Python. In case you can't guess the answer, Python and NLTK won by a significant margin over R and tm. Text processing with R seemed simple on paper, but performance and flexibility limitations have
As a consultant and advisor to many firms running on or investigating AWS, I find SSH host and key management to be a constant struggle. From IAM credentials to default OS logins, it's easy to lose time with constant lookups. What we'd really like is to get a custom SSH config file for AWS.
I'll be giving a talk tonight on automated Oracle database deployment at the SouthEast Michigan Oracle Professionals (SEMOP) Meetup Group. While I'll be following up on this post later, I wanted to share the slides and Github repository for participants to follow along: Automating Oracle Database deployment with Amazon Web Services, fabric, and boto from mjbommar Github
After a nice twitter conversation this morning, I finally got the impetus to release the source for my Congressional Bill Statistics data. You can find the source at this Github repository. I haven't taken the time to review licensing yet, but I won't be asserting anything more than CC3 Attribution on my code.
In many circumstances, you might want to connect R directly to a database to store and retrieve data. If the source database is an Oracle database, you have a number of options: ROracle RODBC RJDBC Using ROracle should theoretically provide you with the best performing client, as this library is a wrapper around the
Much of my time lately has gone into analyzing and trading products in the volatility complex. As a result, I regularly watch the VIX term structure for continuations or deviations from trend. To make analysis simpler, I've written some R code that rips the term structure off the CBOE VIX term structure page and
In a typical Oracle database implementation, you'll want to baseline or benchmark your storage. The storage team will hand over, and you'll run a battery of tests using software like bonnie++ or ORION. You'll make sure that the results are in-line with requirements and expectations. What if you are implementing said database on
Did you find this post useful? Does your organization need Oracle services? We can help. Much of this morning went into investigating strange ADDM reports on a two-node Oracle RAC database. For some reason, there were statistically improbable differences between impact percentages that have persisted over a month; in this case, instance 2 would
Tonight, Eric and I will be presenting back-to-back talks at the AWS Michigan meetup (hosted by the Tech Brewery this time). Eric will be detailing a large Matlab HPC experiment we ran this summer to optimize parameters for a trading strategy; this one is a great AWS case study, as we crunch 10B inputs
Here's a wordcloud of the NFIB et al. v. Sebelius et al. opinion. Very interesting coalitions formation. Healthcare/ACA wordcloud If you're interested in the R and Java code for generating these wordclouds, please see my post on Arizona et al. v. United States from earlier in the week.
