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Minimizing NExpectation for a custom distribution in Mathematica
..., s, Log[x]]/x;
If we plot pdf2 it looks exactly as your Plot
Plot[pdf2[3.77, 1.34, -2.65, 0.40, x], {x, 0, .3}]
Now to the expected value. If I understand it correctly we have to integrate x * pdf[x] from -inf to +inf for a normal expected value.
x * pdf[x] looks like
Plot[pdf2[3.77, 1.34...
Knight's Shortest Path on Chessboard
...e moves are disconnected (value=0), the sparse matrix would be like:
(a1,b3)=1,
(a1,c2)=1,
.....
And the shortest path of two points in a graph can be found using http://en.wikipedia.org/wiki/Dijkstra's_algorithm
Pseudo-code from wikipedia-page:
function Dijkstra(Graph, source):
for each v...
How to vertically center a div for all browsers?
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1396
Below is the best all-around solution I could build to vertically and horizontally center a fi...
Ruby: Calling class method from instance
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answered Mar 27 '10 at 2:33
Mark RushakoffMark Rushakoff
214k3737 gold badges383383 silver badges383383 bronze badges
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string.charAt(x) or string[x]?
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edited Feb 15 '19 at 15:39
answered May 10 '11 at 0:01
Br...
Is it better to call ToList() or ToArray() in LINQ queries?
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375
Unless you simply need an array to meet other constraints you should use ToList. In the major...
Fluid or fixed grid system, in responsive design, based on Twitter Bootstrap
...ainer and row inside a fixed container. With the introduction of bootstrap 3, row-fluid was removed, do no longer use it.
EDIT: As per the comments, some jsFiddles for:
fluid non-responsive layout,
fluid responsive layout,
fixed non-responsive layout,
fixed responsive layout.
These fiddles are ...
How do I get user IP address in django?
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edited May 23 '17 at 10:31
Community♦
111 silver badge
answered Jan 3 '11 at 4:08
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How to remove part of a string? [closed]
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If you're specifically targetting "11223344", then use str_replace:
// str_replace($search, $replace, $subject)
echo str_replace("11223344", "","REGISTER 11223344 here");
share
...
Get names of all keys in the collection
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352
You could do this with MapReduce:
mr = db.runCommand({
"mapreduce" : "my_collection",
"ma...