GNU Screen

This is one of those things I picked up years ago while in graduate school that I just assumed everyone else already knew about. GNU screen is a great utility built-in to most Linux installations for remote session management. Typing 'screen' at the command line enters a new screen session. Once launched, you can start processes in the screen session, detach the session with Ctrl-a+d, then reattach at a later point and resume where you left off. See this screencast I made below:

Coursera Specializations: Data Science, Systems Biology, Python Programming

I first mentioned Coursera about a year ago, when I hired a new analyst in my core. This new hire came in as a very competent Python programmer with a molecular biology and microbial ecology background, but with very little experience in statistics. I got him to take Roger Peng's Computing for Data Analysis course and Jeff Leek's Data Analysis course, and four weeks later he was happily doing statistical analysis in R for gene expression experiments for several of our clients.

Today, Coursera announced Specializations - sequences of courses offered by the same institution, with the option of earning a specialization certificate from the University teaching the courses upon successful completion.

Among others, several specializations that look particularly interesting are:

Johns Hopkins University's Data Science Specialization

This course, one of the longer specializations, is taught by Brian Caffo, Roger Peng, and Jeff Leek at Johns Hopkins. The courses in the specialization include:

The Data Scientist’s Toolbox

R Programming

Getting and Cleaning Data

Exploratory Data Analysis

Reproducible Research

Statistical Inference

Regression Models

Practical Machine Learning

Developing Data Products

A final Capstone Project

Systems Biology (Icahn School of Medicine at Mount Sainai)

Courses include:

Introduction to Systems Biology

Network Analysis in Systems Biology

Dynamical Modeling Methods for Systems Biology

Integrated Analysis in Systems Biology

A final Capstone Project

Fundamentals of Computing (Rice University)

Courses include:

An Introduction to Interactive Programming in Python

Principles of Computing

Algorithmic Thinking

A final Capstone Project

Check out the Coursera Specializations page for other Coursera series.

How To Install BioPerl Without Root Privileges

I've seen this question asked and partially answered all around the web. As with anything related to Perl, I'm sure there is more than one way to do it. Here's how I do it with Perl 5.10.1 on CentOS 6.4.

First, install local::lib with bootstrapping method as described here.

Next, put this in your .bashrc so that it's executed every time you log in:



Log out then log back in, then download and install BioPerl, answering "yes" to any question asking you to download and install dependencies when necessary: