Four short links: 5 August 2014

Discussion Graph Tool, Superlinear Productivity, Go Concurrency, and R Map/Reduce Tools

  1. Discussion Graph Tool (Microsoft Research) — simplifies social media analysis by making it easy to extract high-level features and co-occurrence relationships from raw data.
  2. Superlinear Productivity in Collective Group Actions (PLoS ONE) — study of open source projects shows small groups exhibit non-linear productivity increases by size, which drop off at larger sizes. we document a size effect in the strength and variability of the superlinear effect, with smaller groups exhibiting widely distributed superlinear exponents, some of them characterizing highly productive teams. In contrast, large groups tend to have a smaller superlinearity and less variability.
  3. coop — cheat sheet of the most common concurrency program flows in Go.
  4. Tessera — set of open source tools around Hadoop, R, and visualization.
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