Snippets (math and computing): Difference between revisions
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Things to use or delete. See [[Snippets]]. | Things to use or delete. See [[Snippets]]. | ||
== | == Bathtub curve == | ||
The bathtub curve is widely used in reliability engineering. It describes a particular form of the hazard function which comprises three parts: | |||
* The first part is a decreasing failure rate, known as early failures. | |||
* The second part is a constant failure rate, known as random failures. | |||
* The third part is an increasing failure rate, known as wear-out failures. | |||
The name is derived from the cross-sectional shape of a bathtub: steep sides and a flat bottom. | |||
https://en.wikipedia.org/wiki/Bathtub_curve | |||
== Slack variable == | |||
'''Slack variable''': In an optimization problem, a slack variable is a variable that is added to an inequality constraint to transform it into an equality. Introducing a slack variable replaces an inequality constraint with an equality constraint and a non-negativity constraint on the slack variable. | |||
== Impossible Puzzle == | |||
* https://en.wikipedia.org/wiki/Sum_and_Product_Puzzle | |||
== Sorting algorithms == | |||
* https://www.youtube.com/watch?v=kPRA0W1kECg | |||
== "The Talk" (quantum computing) == | |||
* https://www.smbc-comics.com/comic/the-talk-3 | |||
Revision as of 08:12, 20 May 2018
Things to use or delete. See Snippets.
Bathtub curve
The bathtub curve is widely used in reliability engineering. It describes a particular form of the hazard function which comprises three parts:
- The first part is a decreasing failure rate, known as early failures.
- The second part is a constant failure rate, known as random failures.
- The third part is an increasing failure rate, known as wear-out failures.
The name is derived from the cross-sectional shape of a bathtub: steep sides and a flat bottom.
https://en.wikipedia.org/wiki/Bathtub_curve
Slack variable
Slack variable: In an optimization problem, a slack variable is a variable that is added to an inequality constraint to transform it into an equality. Introducing a slack variable replaces an inequality constraint with an equality constraint and a non-negativity constraint on the slack variable.