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Taking a collection of potentially overlapping 4 dimensional hypercubes, creating a new collection that covers the same parameter space with no overlaps, and then merging the mess of tiny cubes back together as much as possible to keep the list size reasonable. For some data sets with a few thousand members this operation could take several hours to execute in VBA (after order of magnitude level optimizations like 'disable refresh' and 'copy numbers to variables instead of reading from cells every single time') vs 15s for the same algorithm in a C# port.
If my explanation didn't make sense, here's a 2d example.
initial input; 2 overlapping rectangles:
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|___|_| |
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|_____|
first pass, after splitting to remove overlap; 7 non-overlapping rectangles:
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|___|_|___
|___|_|___|
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Second pass, after combining adjacent rectangles; 3 non-overlapping rectangles:
_____
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|_____|___
|_________|
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|_____|
It gets a lot messier in 4-space. 
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, waging all things in the balance of reason?
Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful?
--Zachris Topelius
Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies.
-- Sarah Hoyt
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I forget exactly, but it was an Excel file that scheduled staff in call a center, it did a bunch of database calls too. What made it take even longer to open was that the anti-virus wanted to check everything it was doing. So I used Task Manager to kill the anti-virus whenever I opened the file. ![Badger | [badger,badger,badger,badger...]](https://www.codeproject.com/script/Forums/Images/badger.gif)
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Movie Quote Of The Day
Probability is like gravity: you cannot negotiate with gravity.
Which movie?
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Crockett's Physics Theme Unfloated
In Word you can only store 2 bytes. That is why I use Writer.
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Falling Down[^], I should think??? 
Anything that is unrelated to elephants is irrelephant
Anonymous
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The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
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I'd just like a chance to prove that money can't make me happy.
Me, all the time
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The Drop
Rules for the FOSW ![ ^]
if(this.signature != "")
{
MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
}
else
{
MessageBox.Show("404-Signature not found");
}
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Super size me : the later years
Every day, thousands of innocent plants are killed by vegetarians.
Help end the violence EAT BACON
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It's true, I do. In case anyone was wondering what I've been up to over the last few months (probably not, after all, why would you), I've been busy launching a new business to try and save a museum. This has been with the help of Intel, and I was interviewed for a magazine about the work I'm doing with this. My interview went live yesterday[^]. There are a few typos as we conducted the interview over the phone and I guess my accent got the better of them.
This space for rent
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Impressive!
Get me coffee and no one gets hurt!
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Pete O'Hanlon wrote: I guess my accent got the better of them.
You probably butchered the word "Celtic". 
There are two types of people in this world: those that pronounce GIF with a soft G, and those who do not deserve to speak words, ever.
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That is a fun project.
I'd rather be phishing!
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BucketList.Add(Durham Light Infantry Museum);
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Interesting! Thanks for sharing and good luck with that project, I hope it'll work out!
If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson
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Man, you rock!
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There's more than just me trying to save the museum. We currently have about 25,000 supporters.
This space for rent
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Congrautlatins, Pete, I can't think of anyone better than ye to create the future.
cheers, Bill
«The truth is a snare: you cannot have it, without being caught. You cannot have the truth in such a way that you catch it, but only in such a way that it catches you.» Soren Kierkegaard
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POH! Cool stuff. Keep up the good work.
- I would love to change the world, but they won’t give me the source code.
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Pete O'Hanlon wrote: I guess my accent got the better of them.
Or confuse them with Yoda-Speak you did.
Congrats and for a worthy cause, my hats off to you.
It was broke, so I fixed it.
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those soldiers would have fight against face recognition camera on every corner
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Not necessarily. As with all technology, it depends what you use it for.
This space for rent
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quite an achievement. congatulations.
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REALLY IMPRESSIVE! Congratulations!
Anything that is unrelated to elephants is irrelephant
Anonymous
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The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
-
I'd just like a chance to prove that money can't make me happy.
Me, all the time
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Hey @Pete-OHanlon
I re-read the article once more and found it even more interesting. I'm curious and feel that I have a lot of questions. I don't want to bother you with all of them, though, but a few perhaps:
1) Are you doing all this by yourself?
2) How far have you come? I gather that there is still a lot to do? Are there any features that are ready now (and that I could see if I were to go visit the museum)?
3) Isn't it hard using facial recognition for this? Peoples faces change as they grow older, so recognizing people after a while may prove difficult? Especially with children like you mention, because I believe that your face changes the most when you're young? Also for the soldiers in the old pictures, that might not have been taken at approximately the same time?
I really hope you can pull this off. Personally, I like to visit museums, even the way they are, but I agree that you have to change them to get younger people to see the attraction as well...
Anything that is unrelated to elephants is irrelephant
Anonymous
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The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
-
I'd just like a chance to prove that money can't make me happy.
Me, all the time
modified 13-Apr-16 5:15am.
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Johnny J. wrote: Are you doing all this by yourself?
The proof of concepts for certain parts, yes I am. Things like the VR work, I will be bringing people in for. As I gain traction with this, I will have to start employing people - it is a business after all.Johnny J. wrote: How far have you come?
The virtual greenscreen prototype is done - so I have the ability to put you into the archive footage. This is a technology that I will keep adding features to - these are ultimately going to end up being museum/display specific, so I have built this as a pluggable pipeline. I also have the facial recognition built for when people arrive at the museum for registering new visitors, and recognising those who are already present. This facial recognition module also runs stand alone to identify where people are in the museum. The other side of the facial recognition has nothing to do with cameras; so I've been building a graph database for capturing the metadata from photographs which includes facial landmarks where it can identify it - this is one of the big selling points because there is all sorts of analytics we can do here.Johnny J. wrote: Isn't it hard using facial recognition for this?
Yes. The key thing here is that people will still be checking into the museum through reception areas, so anyone who the system doesn't recognise will still be findable, and their image can be updated - I just drop their old landmarks and add new.Johnny J. wrote: I like to visit museums, even the way they are
That's what we're trying to do - by adding more interactivity, we want to give people incentives to come back to the same museum time and time again.
This space for rent
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