I am working on
a free algebra calculator that uses interactive diagrams and step-by-step explanations to make middle-school math more intuitive.
My MathPapa Tumblr focuses on middle-school math education and technology.
I made a brief tutorial site on adding fractions.
I will be posting interactive algebra lessons at Variable X.
MathPapa's Chrome App: Algebra Calculator by MathPapa.com
I was a computer science PhD student at Stanford, graduating Autumn 2012. My
advisor was Jennifer
Widom. My main research project was Panda, a system that uses data provenance to help data analysts debug their workflows.
- Logical Provenance in
R. Ikeda, A. Das Sarma, and J. Widom.
Proceedings of the 29th
International Conference on Data Engineering, Brisbane, Australia,
April 2013. Long
version of the same paper.
Debugging and Drill-Down in Data-Oriented Workflows.
R. Ikeda, J. Cho, C. Fang, S. Salihoglu, S. Torikai, and J. Widom.
Proceedings of the 28th International Conference on Data
Engineering, Washington, DC, April 2012. Demonstration description.
in Data-Oriented Workflows.
R. Ikeda, S. Salihoglu, J. Widom.
Proceedings of the 20th
ACM Conference on Information and Knowledge Management (CIKM
'11), Glasgow, Scotland, October 2011.
Provenance for Generalized
Map and Reduce Workflows.
R. Ikeda, H. Park, J. Widom.
RAMP: A System for
Capturing and Tracing Provenance in MapReduce Workflows.
H. Park, R. Ikeda, and J. Widom.
VLDB 2011. Demonstration
description. (Also presented in Hadoop Summit 2011, Santa Clara,
California, June 2011.)
Panda: A System for
Provenance and Data.
R. Ikeda and J. Widom.
IEEE Data Engineering Bulletin,
Special Issue on Data Provenance, 33(3), September 2010. (Note: A
shorter version of this paper appeared in TaPP '10.)
Geocities Site (2003)
DB-Class Exercises: I developed the checking software and interactive workbenches for all of the automatically checked exercises
in Prof. Widom's Fall 2011 public class on databases, now hosted by Coursera.
was a side project
for sharing and rapidly prototyping Python scripts.
It runs on Google App Engine.