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Sure...
J is designed for working with regular data structures. Trees -- or
at least binary trees -- are irregular. Specifically, in the context
of the KD tree, to properly interpret the significance of a child
node, you must include information which is not represented at the
node, but which mus
Raul:
Can you expand on why trees are bad in J? Coming from a C and Lisp
mentality, tree search wins a lot of problems. kd-trees break down in higher
dimensions (aka, for things like image databases, where I guess locality
hashing will beat a brute force search), but for modest dimensionality
(~1
All of the numbers I've reported are with a left argument to timex. The
argument I used was 10 for the 500s, and 1000 for the 50s, except my phone
where I had to use 1 to get stable answers for the 50s.
Paul
On Thu, Sep 13, 2012 at 12:09 AM, Roger Hui wrote:
> 1. The %. implementation does n
Tree structures -- especially binary tree structures -- are frequently
a bad choice in J.
Personally, if I were working with spatial data in J, I'd probably
start with something like this:
NB. example arbitrary set of points:
points=: ?.20 3$0
prepad=: $&__@,~@{:@$, ], $&_@,~@{:@$
searchable=: /:
Marshall Lochbaum wrote:
> It's getting late, so I'll stop for now (only one line left now,
> though!). I'll pick up tomorrow, and bank on the fact that it will take
> much longer to read this than it did to write it.
It's worth reading, though -- thank you.
> Marshall
-Wm
-
Ah, there it is.. Thanks Ric, a salute to your surname. (sorry, could not
resist)
Groetjes,
Wim
2012/9/13 Ric Sherlock
> I also struggled a bit to find out how to enable the J Keyboard on my
> HTC One S running JellyBean. In the end I discovered that once the
> keyboard comes up in the J app
I also struggled a bit to find out how to enable the J Keyboard on my
HTC One S running JellyBean. In the end I discovered that once the
keyboard comes up in the J application, I can drag down the bar at the
top of the window to show the option to "Select Input Method".
On Thu, Sep 13, 2012 at 7:2
Not about the speed, wihc gives 0.013 om my HTC Sensation, but how to
enable the J Keyboard. Did what whas in the help file, but if I tap long on
the console, I get the menu to Cut, Copy and Paste. No keyboard selection
as described. I'm running Android 4. Is the readme describing behaviour
from an
0. One of the goals of the linear representation (which you were using to
generate the multi-digit display of 0.1&) is that if you re-enter the line
you get the original noun/verb/whatever back. For some numbers many digits
may be required, esp. if the code is a bit off regarding how many digits
a
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