- P Values are not Error Probabilities (PDF) — In particular, we illustrate how this mixing of statistical testing methodologies has resulted in widespread confusion over the interpretation of p values (evidential measures) and α levels (measures of error). We demonstrate that this confusion was a problem between the Fisherian and Neyman–Pearson camps, is not uncommon among statisticians, is prevalent in statistics textbooks, and is well nigh universal in the pages of leading (marketing) journals. This mass confusion, in turn, has rendered applications of classical statistical testing all but meaningless among applied researchers.
- Breaking the 1000ms Time to Glass Mobile Barrier (YouTube) —
See also slides. Stay under 250 ms to feel “fast.” Stay under 1000 ms to keep users’ attention.
- Modern Methods for Sentiment Analysis — Recently, Google developed a method called Word2Vec that captures the context of words, while at the same time reducing the size of the data. Gentle introduction, with code.
Uncertainty is a feature, not a bug.
After decades of work on programming, we finally got a development environment with massive reach and tremendous power. Somehow, though, the web isn’t centered on a comprehensive programming environment. The web succeeded with a (severely) lowest-common denominator, specification-driven approach that let it grow with time, technology, and multiple communities, across multiple platforms.
Almost two decades ago, I was all excited about Java. Write applets once, run anywhere, with libraries to make sure it all came out the same wherever anywhere might be. Java is still a powerhouse, but it all worked out differently than I expected. Even in Java’s early years, before the Java news was filled with security bulletins, applets felt like a strange mix with their surrounding web pages. Creating an applet demanded programmers to build every detail. Even with Java’s ever-improving libraries, creating a Java applet that did much was an intense experience focused on programming.
Java wasn’t the only comprehensive way to build web apps, of course. Flash demanded programming, but its values always incorporated design, action, and well, flash, in ways that meshed well with the way people built sites. Flash kept growing and growing before its ecosystem took a fatal hit from the iPhone as HTML5 offered replacements for some of its key strengths. I mostly notice Flash these days because it asks me to update it regularly and because pages tell me when it’s crashed.
Compared to either of those rich environments, web technology is a tangled mess. The early web was functional but unstyled, with no behavior beyond navigating among pages. That? That would dominate client-side computing? Read more…