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Posted 3 hours ago (via flowingdata.com)

There's a lot of data readily available online. We know this. However, there's also a lot of data available that's offline, sitting on people's hard drives. You just have to…...

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Posted 3 hours ago (via flowingdata.com)

If you're new to R or coding in general, it can be a challenge to figure out where you're going. Where to start? What to learn next? There's a benefit to more guided instruction. Here's a course to help take you from beginner to advanced.Tags: R...

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Posted 13 hours ago (via andrewgelman.com)

Adrian Torchiana writes: I recently created a little probability puzzle app for android, and I was wondering whether you have any suggestions for puzzles that are engaging, approachable to someone who hasn’t taken a probability course, and don’t involve coins or dice. I think my easy puzzles are easy enough, but I’m having trouble thinking […]
The post He’s looking fo...

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Posted 13 hours ago (via phys.org)

Overturning cars, flying missiles, and airplanes speeding across the screen – on modern computers, 3D objects can be calculated in a flash. However, many surfaces still look unnatural. Whether it is skin, stone or wax – on the computer screen, all materials look alike, as if the objects had all been cut out of the same kind of opaque material. This is about to change: TU Wien (Vienna), the Uni...

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Posted 13 hours ago (via phys.org)

A mathematical algorithm jointly developed by EURAC and the University of Bolzano (unibz) now permits exceptionally rapid recognition of regular DNA sequences. The previous time of 20 days is reduced to just 5 hours under the new method. Its efficiency and methodological rigour has now led to the algorithm's incorporation in the world's most widely-used DNA-analysis software. This momentous scient...

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Posted 1 day ago (via blog.computationalcomplexity.org)

If A is a decider (e.g, DFA) or generator (e.g., CFG) then L(A) is the language that it decides or generates.
The following are well known:
L(DFA) = L(NDFA) ⊂ L(DPDA) ⊂ L(PDA) ⊂ L(CSL).
We are concerned with the size of these devices. For a DFA and NDFA the size is
the number of states, for a DPDA, PDA the size is the sum of the stack alphabet and the number of states, and...

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Posted 1 day ago (via flowingdata.com)

The Economist made a simple yet effective comparison of Black America and White America against metrics of countries that are part of the Human Development Index and the OECD. In…Tags: Economist, race...

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Posted 1 day ago (via feedproxy.google.com)

If you are taking mathematics courses related to combinatorics or probability, I found a page from UCLA containing hundreds of video lectures on the said subjects. It is a collection of lectures from 1993 up to the present and includes lectures from famous mathematicians such as Terence Tao. For more free video lectures, visit the All for […]Math and Multimedia - School math, multimedia, a...

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Posted 1 day ago (via flowingdata.com)

Select one or more races for a quick comparison. Counties are colored by the most prevalent.Tags: race...