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Is the Tax Code the longest Title?
Last week, I shared that Dan Katz and I had finally published a draft of our paper, Measuring the Complexity of the Law: The U.S. Code. We’d previewed this research on Computational Legal Studies...
View Articleipython notebook for R: Quickstart for Ubuntu
If you’re like me, you love ipython notebook but often write R. RStudio’s integrated RMarkdown is nice, but for some contexts like quick demos or basic training, a browser-based interface is...
View ArticleAWS EC2 hs1.8xlarge Oracle ORION benchmark results
Benchmarking I/O with Oracle ORION is an important part of planning, baselining, and performance-tuning Oracle environments. I’ve previously provided ORION results for the hi1.4xlarge SSD-backed...
View ArticleAutomating Oracle ORION I/O testing
Oracle ORION is a powerful tool for evaluating realistic OLTP and DSS/DW I/O performance. ORION should be a part of every Oracle professional’s toolkit for build QA and performance tuning. I’ve...
View ArticleBenchmarking the new AWS Postgres RDS instances
Postgres has finally come to RDS! Want to know how these instances stack up on a naive pgbench test? Below is a table of simple pgbench results taken over a 60 second period. All RDS instances were...
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Plotting average read and write operation size by ASM disk for Oracle
Throughput, throughput, throughput – for many databases, this is the performance measure of importance. When you are working with a fixed number of IOPS but see mixed workload types, system health...
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Isotonic Regressions in scikit-learn
Isotonic regression is a great tool to keep in your repertoire; it’s like weighted least-squares with a monotonicity constraint. Why is this so useful, you ask? Take a look at the example...
View ArticleFuzzy match sentences in Python
Let’s imagine you have a sentence of interest. You’d like to find all occurrences of this sentence within a corpus of text. How would you go about this? The most obvious answer is to look for exact...
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Advanced approximate sentence matching in Python
In our last post, we went over a range of options to perform approximate sentence matching in Python, an import task for many natural language processing and machine learning tasks. To begin, we...
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Course material for Complex Systems 530 – Computer Modeling for Complex Systems
This term, I’m teaching Complex Systems 530 – Computer Modeling for Complex Systems at the University of Michigan Center for the Study of Complex Systems. In the spirit of open science, all course...
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