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World: r3wp

[Tech News] Interesting technology

Henrik
18-May-2009
[4044]
From the FAQ:

Is Wolfram|Alpha a search engine?

No. It's a computational knowledge engine: it generates output by 
doing computations from its own internal knowledge base, instead 
of searching the web and returning links.

Does Wolfram|Alpha get its data from the web?

No. It comes from Wolfram|Alpha's internal knowledge base. Some of 
the data in that knowledge base is derived from official public or 
private websites, but most of it is from more systematic primary 
sources.

Where does Wolfram|Alpha's data come from?

Many different sources, combined and curated by the Wolfram|Alpha 
team. At the bottom of each relevant results page there's a "Source 
information" button, which provides background sources and references.
Maxim
18-May-2009
[4045]
by using it a bit I realise that its not using very fancy NLP for 
the questions.
Henrik
18-May-2009
[4046]
yes, some questions fail, even if they should make logical sense.
Maxim
18-May-2009
[4047]
sometimes changing what, where or who gives the same replies, when 
they should be different.. so its probably using basic statistical 
based analysis, which doesn't understand the concepts.... where as 
current nlp systems really do understand the differences between 
places people and things.
Sunanda
18-May-2009
[4048]
It needs to loosen up a bit too:
   largest prime  ===> good answer
   smallest prime ===> confused wolfram
Graham
18-May-2009
[4049x2]
perhaps the people who coded it assumed that the persons asking the 
questions have the ability to understand the answers?
So, try and deal with the hard questions first and leave the easy 
stuff to google
Henrik
18-May-2009
[4051x2]
I guess you should compare Wolfram Alpha to Spock in the beginning 
of the fourth Star Trek movie, where he's being tested by a computer. 
"How do you feel?" :-)
They should in fact just call it "Ask Mr. Spock".
Graham
18-May-2009
[4053]
You're not going to ruin the movie for us are you???
Henrik
18-May-2009
[4054]
Not the new one. :-)
Graham
18-May-2009
[4055]
Gene Roddenbury or his estate executors might object ...
Henrik
18-May-2009
[4056]
I can see why Carl says it's his favourite Star Trek movie. The computers 
that Spock uses are in fact Amiga 1000s. :-)
Graham
18-May-2009
[4057]
aw geez .. spoilers :(
Henrik
18-May-2009
[4058]
The computer that Scotty uses to show transparent aluminum was originally 
going to be an Amiga, but Commodore would only provide a computer 
if they bought it. Apple was willing to loan them the Mac.
 <--- Commodore marketing in action.
Graham
18-May-2009
[4059]
someone lent them an Atari portfolio for Terminator
Geomol
18-May-2009
[4060x3]
Reminds me of the START project at MIT.
http://start.csail.mit.edu/


Remember the strange hokus-pokus REBOL script, I wrote some years 
ago?

>> do http://www.fys.ku.dk/~niclasen/rebol/hokus-pokus.r
>> hokus-pokus "What is the highest point in Canada?"

Canada
highest point: Mount Logan 5,959 m

>> hokus-pokus "What is the volume of the Earth?"

The volume of Earth is 108.321  (1010 km3).

etc...
Other strange use:

>> hokus-pokus/quote "Hitchhiker"

Ford: [watching the Magrathean recording of Deep Thought] Is that 
it?
Zaphod: No, there's more. They go back.
Arthur: What, seven and a half million years later?
Zaphod: Yeah, they do.

>> hokus-pokus #00113f
== 0.17.63
>> hokus-pokus/translate "Yeah, they do." "en2de"

Ja, sie tun.

:-) I use this too little.
Maxim
18-May-2009
[4063]
start is probably where wolfram got his idea from.
Sunanda
24-May-2009
[4064]
Surprising conclusion on Gregory Higley's blog?:

<....I’ve come to the realization that JavaScript is the language 
in common use that’s most akin to REBOL.>
http://blog.revolucent.net/2009/05/javascript-rebol.html
BrianH
24-May-2009
[4065x3]
JavaScript is a strict subset of the R3 semantics, though there's 
hidden stuff that isn't hidden in REBOL, and particular implementations 
can include standard objects that have no analog in REBOL. There's 
no corresponding concept for JavaScript's objects in R2, but the 
R3 map! type is close enough.
The "hidden stuff" is the prototype message delegation, which can 
be done in REBOL explicitly.
On an implementtation level, JavaScript being compiled means that 
code really is code, rather than data for an interpreter. So JS is 
more like a subset of what R3 pretends to be, rather than what it 
is :)
Chris
24-May-2009
[4068]
Hmm, DOM (ok, not really what he means, but still vaguely similar):

	http://www.rebol.org/view-script.r?script=xml-dom.r
	http://www.ross-gill.com/r/qxml.html(slightly newer)
Paul
25-May-2009
[4069]
Very cool project managment site.  http://www.attask.com/
Robert
25-May-2009
[4070]
Looks pretty good.
Janko
25-May-2009
[4071]
they have "View demo" button that leads to some not so small form 
to fill, on that page there is try @task that leads to even slightly 
bigger form
Chris
25-May-2009
[4072]
Shame there's no product tour (without, I presume, signing up)
Reichart
25-May-2009
[4073x2]
You also need to have a minimum number of people to use it.  In other 
words, you have to sort of buy in all hog from what I understand...
But they do have some cool features...
Paul
25-May-2009
[4075]
You can get more of a feel for it here.  http://www.attask.com/overview/product-tour/project-management
Henrik
28-May-2009
[4076]
Future spacecraft can use pulsars as an interstellar GPS with a precision 
of one meter:

http://www.technologyreview.com/blog/arxiv/23576/
Reichart
28-May-2009
[4077]
Great, the aliens "will" find us....
Graham
31-May-2009
[4078x3]
Google's new collaboration tool http://wave.google.com/
Kind of underwhelming.
The spelling corrector spelly looks interesting.
Pekr
31-May-2009
[4081]
I already pointed to in in Links group. Looks interesting. I thing 
that we might have here some chance with R3. Maybe, as a "killer 
app", we could think of alternative client frond-end for services, 
which have public APIs. That way such clients might be downloaded 
by millions, making REBOL a bit more popular :-)
Henrik
2-Jun-2009
[4082]
Project Natal for XBox 360 looks very interesting:

http://www.xbox.com/en-US/live/projectnatal/
Pekr
2-Jun-2009
[4083]
utopia ....
Henrik
2-Jun-2009
[4084]
http://kotaku.com/5274554/molyneuxs-milo-brings-a-virtual-child-to-the-xbox-360?autoplay=true

How it's used.
Pekr
2-Jun-2009
[4085]
I like this one - http://www.camspace.com/- allows you to take any 
object for navigation ...
Henrik
16-Jun-2009
[4086]
A new type of harddisk designed to compete with SSD. Very interesting:

http://www.dataslide.com/
Gabriele
16-Jun-2009
[4087]
that looks very cool!
Graham
16-Jun-2009
[4088]
Is it a magneto-optical drive ... like we had years ago?
Henrik
16-Jun-2009
[4089]
No, it basically a harddrive with a rectangular magnetic plate, and 
instead of one head it has millions sitting in an array in another 
plate above the magnetic plate, placed on a very thin lubricant. 
the thing is that the heads can move up to 250 micrometers back and 
forth above the plate using a piezo actuator. Everything is tightly 
packed together with no loose parts.


There isn't much motion and the frequency of the motion is only about 
800 - 1000 Hz. However the head arrangement allows for massive parallelization 
of read and write ops. Currently only 64 heads can be accessed simultaneously, 
but I suspect this number will go way up. If the drive is idle, no 
power is used as nothing is moving. Due to the low frequency of motion, 
there can be a latency of about 0.5 ms, but the read/write speeds 
far exceed that of SSD. I suspect this frequency is used to avoid 
thermal and power problems.


The difference here from SSD is no need for specialized file systems, 
current manufacturing methods can be used and it uses even less power 
than SSD. It can also freely be scaled and adapted to 1.8", 2.5" 
and 3.5" drives, from what I can see. The durability for writeops 
on the same sector would be same or better than a harddrive.
Sunanda
16-Jun-2009
[4090]
I can see it reducing latency [head movement time] but rotational 
delay is likely to be the same. You could optimise for that, but 
that would need tweaks to the file system.

Maybe they got the inspiration from 1950's drum storage -- one head 
per track :-)
http://en.wikipedia.org/wiki/Drum_memory
Henrik
16-Jun-2009
[4091]
Nothing is rotating.
Sunanda
16-Jun-2009
[4092]
Sorry -- my mistake.

There's some interesting discussion of the device in the comments 
here:

http://www.theregister.co.uk/2009/06/15/dataslide_berkeleydb/comments/
Ladislav
16-Jun-2009
[4093]
seems, that digital signatures are becoming quite insecure these 
days http://www.secureworks.com/research/blog/index.php/2009/6/3/sha-1-collision-attacks-now-252/