- Distinguishing Cause and Effect using Observational Data — research paper evaluating effectiveness of the “additive noise” test, a nifty statistical trick to identify causal relationships from observational data. (via Slashdot)
- Clustering Bitcoin Accounts Using Heuristics (O’Reilly Radar) — In theory, a user can go by many different pseudonyms. If that user is careful and keeps the activity of those different pseudonyms separate, completely distinct from one another, then they can really maintain a level of, maybe not anonymity, but again, cryptographically it’s called pseudo-anonymity. […] It turns out in reality, though, the way most users and services are using bitcoin, was really not following any of the guidelines that you would need to follow in order to achieve this notion of pseudo-anonymity. So, basically, what we were able to do is develop certain heuristics for clustering together different public keys, or different pseudonyms.
- A Primer on Hardware Security: Models, Methods, and Metrics (PDF) — Camouflaging: This is a layout-level technique to hamper image-processing-based extraction of gate-level netlist. In one embodiment of camouflaging, the layouts of standard cells are designed to look alike, resulting in incorrect extraction of the netlist. The layout of nand cell and the layout of nor cell look different and hence their functionality can be extracted. However, the layout of a camouflaged nand cell and the layout of camouflaged nor cell can be made to look identical and hence an attacker cannot unambiguously extract their functionality.
- Prompter: A Domain-Specific Language for Versu (PDF) — literally a scripting language (you write theatrical-style scripts, characters, dialogues, and events) for an inference engine that lets you talk to characters and have a different story play out each time.
Sensor Networks, Programming Silliness, Higher Order C, and Meeting Silliness
- Pete Warden on Sensors — We’re all carrying little networked laboratories in our pockets. You see a photo. I see millions of light-sensor readings at an exact coordinate on the earth’s surface with a time resolution down to the millisecond. The future is combining all these signals into new ways of understanding the world, like this real-time stream of atmospheric measurements.
- Quine Relay — This is a Ruby program that generates Scala program that generates Scheme program that generates …(through 50 languages)… REXX program that generates the original Ruby code again.
- Cello — a GNU99 C library which brings higher level programming to C. Interfaces allow for structured design, Duck Typing allows for generic functions, Exceptions control error handling, Constructors/Destructors aid memory management, Syntactic Sugar increases readability.
- The Meeting (John Birmingham) — satirising the Wall Street Journal’s meeting checklist advice.
A deep look at the market for books on programming languages.
In this fourth post of "State of the Computer Book Market," we look at programming languages and drill in on each language area.
A list from O'Reilly's Free to Choose Cyber-Monday promotion offers a fascinating view of what's on the minds of the core audience.