May/June 2018 issue of acmqueue The May/June issue of acmqueue is out now


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Originally published in Queue vol. 11, no. 8
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Jez Humble - Continuous Delivery Sounds Great, but Will It Work Here?
It's not magic, it just requires continuous, daily improvement at all levels.

Nicole Forsgren, Mik Kersten - DevOps Metrics
Your biggest mistake might be collecting the wrong data.

Alvaro Videla - Metaphors We Compute By
Code is a story that explains how to solve a particular problem.

Ivar Jacobson, Ian Spence, Pan-Wei Ng - Is There a Single Method for the Internet of Things?
Essence can keep software development for the IoT from becoming unwieldy.


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do you also trade? | Fri, 05 Aug 2016 19:07:59 UTC

if you also trading ill be interested in joining you

Brandon | Sun, 08 May 2016 21:39:10 UTC

I am currently stuck calculating the mean and variance estimators used to calculate beta. The article says

"At each step of the algorithm a 2 × 2 matrix Mt and a 2 × 1 vector Vt need to be saved in memory and updated with a new data point according to the following recursion....As for the mean and variance estimator, the initialization of the recursion can be done using a burn-in period."

The problem I am having is that I'm not sure what values the M and V parameters should be initialized to using a burn-in period. I am not sure what values the 2x2 matrix or the 2x1 vector should be.

mperez | Fri, 08 Jan 2016 21:47:19 UTC

Why, when measuring volatility, they calculate the standard deviation instead of just using the variance? They lose time while calculating the square root.

xxx | Mon, 21 Oct 2013 07:48:57 UTC

Name of the Author, Loveless... tai diao le

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