If you collect behavioral or market research observations online using Qualtrics surveys, data quality is a serious concern. Unlike in-person labs, paid data collection online is highly susceptible to fraud. In this post, we will revisit established best practices and adapt them to recent threats posed by Large Language Models…Read More
Tools
Text Classification with Python on the HPCC
From time to time Wharton Computing Research and Analytics group is asked for assistance in using machine learning to classify text data. We thought it might be helpful to provide a working example as scaffolding for text classification projects. Setup To get started, log into your HPCC account. If you…Read More
ACCT 270 and Windows Research Computing
Windows Research Computing recently concluded working with Professor Dan Taylor’s ACCT270 class where he used the new Windows Research On-Demand environment to allow students to use SAS and Big Data for their classwork and projects. Each student in ACCT270 was provided an AWS WorkSpaces with 4vCPU and 16GB of ram…Read More
Capturing Video and/or Audio in Qualtrics
CameraTag is the Research Programming team’s suggested method of capturing and collecting video and/or audio from Qualtrics survey participants. The CameraTag platform streamlines the collection process in addition to providing media hosting. CameraTag does charge a small monthly fee based on the minutes of collected content. See more about CameraTag…Read More
8 Qualtrics Hacks That’ll Make Your Life Easier – Number 6 Will Make Your Day
Researchers live for collecting data. Here at Wharton we use Qualtrics regularly, and our postgraduates are always doing something more complicated than a conjoint analysis or Likert scale. These are some of our favorite Qualtrics hacks that multiply your ability to get a great data set. The examples below are…Read More
HPCC Dropbox Client Retirement
Dropbox on Wharton’s HPC Cluster has been a great tool for many of you! The ability to sync files between desktop, HPCC, home, phone, and collaborators is of immense value. However, Dropbox has announced that on November 7th, 2018 Dropbox will no longer support our setup* with their official client,…Read More
Minimal Linux with Packer and Vagrant
As an IT professional, it’s important to take the time to sharpen your tools. And as a systems programmer and project leader in research computing, one of my most valuable tools is a lean, mean operating system install. Prior to the deployment of Wharton’s High Performance Computing Cluster (HPCC), the…Read More
Running Research Code in the Cloud
Part of the recent Wharton High-Performance Computing Cluster (HPCC) upgrade was augmentation with Amazon EC2 cloud resources. Wharton Research Computing recently piloted the deployment of a cloud-bursting solution with Univa UniCloud. After much help from friendly initial users, we have worked out most of the kinks. Now, we have a…Read More
MobaXterm: SSH, Graphics (X), VNC, SFTP, local shell
I’m primarily a Microsoft OS user, and have been for many years — since the mid-90’s! While OSX and Linux have come a long way, they still don’t fit my business style as well as Windows does. Yet. But I’m also a power Linux user, and spend a lot of…Read More
MCMC in The Cloud
Arun Gopalakrishnan, a doctoral candidate in Wharton’s Marketing department, recently approached me to discuss taking his MCMC simulations in R to the next level: Big. His paper is under review at a journal, and the referees asked for more. Much more. While he sharpened his code, Wharton Computing’s Research Computing team built,…Read More