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Dario Izzo

Computers in space - 3 views

www.dansdata.com/spacecomp.htm

INF probabilistic computing

shared by Dario Izzo on 07 Dec 09 - Cached
  • Dario Izzo on 07 Dec 09
     
    A link to help the discussion a few posts below....
  • LeopoldS on 08 Dec 09
     
    one post above you mean ...?
  • Ma Ru on 08 Dec 09
     
    Now that you commented, it's below :) [Edit] Fun reading btw.
Friederike Sontag

New supercomputer at the German Climate Computing Center in Hamburg - 2 views

www.supercomputingonline.com/...te-computing-center-in-hamburg

climate_computing Hamburg Blizzard supercomputer

shared by Friederike Sontag on 11 Dec 09 - Cached
LeopoldS

Track changes with LaTeX - 3 views

trackchanges.sourceforge.net

latex

shared by LeopoldS on 25 Jan 10 - Cached
  • LeopoldS on 25 Jan 10
     
    did any of you Latex gurus already try this out?
  • ...1 more comment...
  • Luzi Bergamin on 25 Jan 10
     
    It's installed on my computer, but I never really used it. I think it's fine, but for my purposes latexdiff mostly is enough.
  • LeopoldS on 25 Jan 10
     
    I assume that you use latexdiff from the command line ... still have to find a nice script with which to integrate it into the TexShop GUI for Karène ...
  • Luzi Bergamin on 25 Jan 10
     
    A command line is an interface as well. I was able to explain via phone to a (computer-wise) avarage undereducated Mac-user how to install and run latexdiff. Thus I think also Karene can use it...
Francesco Biscani

What Should We Teach New Software Developers? Why? | January 2010 | Communications of t... - 3 views

cacm.acm.org/...fulltext

inf

shared by Francesco Biscani on 15 Jan 10 - Cached
Dario Izzo liked it
  • Industry wants to rely on tried-and-true tools and techniques, but is also addicted to dreams of "silver bullets," "transformative breakthroughs," "killer apps," and so forth.
  • This leads to immense conservatism in the choice of basic tools (such as programming languages and operating systems) and a desire for monocultures (to minimize training and deployment costs).
  • The idea of software development as an assembly line manned by semi-skilled interchangeable workers is fundamentally flawed and wasteful.
  • Francesco Biscani on 15 Jan 10
     
    Nice opinion piece by the creator of C++ Bjarne Stroustrup. Substitute "industry" with "science" and many considerations still apply :)
  • Juxi Leitner on 18 Jan 10
     
    "for many, "programming" has become a strange combination of unprincipled hacking and invoking other people's libraries (with only the vaguest idea of what's going on). The notions of "maintenance" and "code quality" are typically forgotten or poorly understood. " ... seen so many of those students :( and ad "My suggestion is to define a structure of CS education based on a core plus specializations and application areas", I am not saying the austrian university system is good, but e.g. the CS degrees in Vienna are done like this, there is a core which is the same for everybody 4-5 semester, and then you specialise in e.g. software engineering or computational mgmt and so forth, and then after 2 semester you specialize again into one of I think 7 or 8 master degrees ... It does not make it easy for industry to hire people, as I have noticed, they sometimes really have no clue what the difference between Software Engineering is compared to Computational Intelligence, at least in HR :/
Nicholas Lan

A counter-distributed computing story - 4 views

www.economist.com/...displaystory.cfm

computing technology

shared by Nicholas Lan on 25 Jan 10 - Cached
  • Nicholas Lan on 25 Jan 10
     
    article itself isn't terribly interesting but first piece i've seen on such a trend
LeopoldS

Internal Research Fellow (post-doc) in Innovation Dynamics and Computational Economics ... - 3 views

www.newscientistjobs.com/...nds-netherlands-1400747615.htm

research fellow

shared by LeopoldS on 30 Mar 10 - Cached
  • LeopoldS on 30 Mar 10
     
    not sure where they got the "industry" from but otherwise our text indeed
LeopoldS

ACT - Opportunities - 3 views

www.esa.int/...openRF.htm

vacancy act opportunities

shared by LeopoldS on 02 Apr 10 - Cached
  • LeopoldS on 02 Apr 10
     
    spread the news - we have re-opened the RF position in innovation dynamics and computational economics ...
Joris _

Hewlett-Packard Unveils Real-World Memristor, Chip of the Future | Popular Science - 3 views

www.popsci.com/...d-unveils-first-ever-memristor

technology electronic

shared by Joris _ on 12 Apr 10 - Cached
LeopoldS liked it
  • they allow the same device to serve as the processor and the memory
  • a memristor system would work far faster, and with far less energy, than a traditional computer.
  • Second, memristors can be much smaller than transistors.
  • ...1 more annotation...
  • Lastly, unlike transistors, which only work linearly, memristors can form three-dimensional networks
  • pacome delva on 15 Apr 10
     
    wow, looks pretty cool! I wonder what is "a ridiculous amount of memory on a chip"...? giga, tera, peta, exa, ... ?
  • Ma Ru on 15 Apr 10
     
    Looks cool indeed, but as with all those technology "breakthroughs" my enthusiasm will be limited until this actually makes it to my laptop...
  • LeopoldS on 15 Apr 10
     
    what a phrase: "this advance could increase the power and memory of computers to nearly unimaginable proportions within only a couple of years." ... sure ....
Francesco Biscani

The Semicolon Wars » American Scientist - 2 views

www.americanscientist.org/...issue.aspx

inf

shared by Francesco Biscani on 07 Jan 11 - No Cached
  • Francesco Biscani on 07 Jan 11
     
    Pretty interesting piece on computer languages.
  • Luís F. Simões on 07 Jan 11
     
    Yes, very good, but I don't get what all the fuss is about... everyone knows Python is the ultimate programming language! :) Follow up reading: If programming languages were religions... (quite accurate actually) Great quote from the article you linked to: In 1975 Edsger W. Dijkstra, a major figure in the structured-programming movement, wrote a memo titled "How Do We Tell Truths that Might Hurt?" The "truths" were mostly Dijkstra's opinions of programming languages; how he told them was very bluntly. Fortran is "an infantile disorder," PL/I "a fatal disease," APL "a mistake, carried through to perfection." Students exposed to COBOL "are mentally mutilated beyond hope of regeneration," he said. "The use of COBOL cripples the mind; its teaching should, therefore, be regarded as a criminal offense."
  • Francesco Biscani on 07 Jan 11
     
    Fool! You can pry my templates from my cold dead hands!
Luís F. Simões

Seminar: You and Your Research, Dr. Richard W. Hamming (March 7, 1986) - 10 views

www.chris-lott.org/...kaiser.html

science research Methods methodology Nobel Bell Labs Los Alamos

shared by Luís F. Simões on 07 Jan 11 - Cached
LeopoldS liked it
  • This talk centered on Hamming's observations and research on the question "Why do so few scientists make significant contributions and so many are forgotten in the long run?" From his more than forty years of experience, thirty of which were at Bell Laboratories, he has made a number of direct observations, asked very pointed questions of scientists about what, how, and why they did things, studied the lives of great scientists and great contributions, and has done introspection and studied theories of creativity. The talk is about what he has learned in terms of the properties of the individual scientists, their abilities, traits, working habits, attitudes, and philosophy.
  • Luís F. Simões on 07 Jan 11
     
    Here's the link related to one of the lunch time discussions. I recommend it to every single one of you. I promise it will be worth your time. If you're lazy, you have a summary here (good stuff also in the references, have a look at them):      Erren TC, Cullen P, Erren M, Bourne PE (2007) Ten Simple Rules for Doing Your Best Research, According to Hamming. PLoS Comput Biol 3(10): e213.
  • ...3 more comments...
  • pacome delva on 11 Jan 11
     
    I'm also pretty sure that the ones who are remembered are not the ones who tried to be... so why all these rules !? I think it's bullshit...
  • Luís F. Simões on 11 Jan 11
     
    The seminar is not a manual on how to achieve fame, but rather an analysis on how others were able to perform very significant work. The two things are in some cases related, but the seminar's focus is on the second.
  • pacome delva on 12 Jan 11
     
    Then read a good book on the life of Copernic, it's the anti-manual of Hamming... he breaks all the rules !
  • LeopoldS on 12 Jan 11
     
    honestly I think that some of these rules actually make sense indeed ... but I am always curious to get a good book recommendation (which book of Copernic would you recommend?) btw Pacome: we are in Paris ... in case you have some time ...
  • pacome delva on 12 Jan 11
     
    I warmly recommend this book, a bit old but fascinating: The sleepwalkers from Arthur Koestler. It shows that progress in science is not straight and do not obey any rule... It is not as rational as most of people seem to believe today. http://www.amazon.com/Sleepwalkers-History-Changing-Universe-Compass/dp/0140192468/ref=sr_1_1?ie=UTF8&qid=1294835558&sr=8-1 Otherwise yes I have some time ! my phone number: 0699428926 We live around Denfert-Rochereau and Montparnasse. We could go for a beer this evening ?
Luís F. Simões

Polynomial Time Code For 3-SAT Released, P==NP - Slashdot - 0 views

science.slashdot.org/...me-Code-For-3-SAT-Released-PNP

INF computer science mathematics algorithm complexity P=NP?

shared by Luís F. Simões on 20 Jan 11 - No Cached
  • "Vladimir Romanov has released what he claims is a polynomial-time algorithm for solving 3-SAT. Because 3-SAT is NP-complete, this would imply that P==NP. While there's still good reason to be skeptical that this is, in fact, true, he's made source code available and appears decidedly more serious than most of the people attempting to prove that P==NP or P!=NP. Even though this is probably wrong, just based on the sheer number of prior failures, it seems more likely to lead to new discoveries than most. Note that there are already algorithms to solve 3-SAT, including one that runs in time (4/3)^n and succeeds with high probability. Incidentally, this wouldn't necessarily imply that encryption is worthless: it may still be too slow to be practical."
  • Luís F. Simões on 20 Jan 11
     
    here we go again...
  • Luís F. Simões on 28 Feb 11
     
    slashdot: "Russian computer scientist Vladimir Romanov has conceded that his previously published solution to the '3 SAT' problem of boolean algebra does not work."
Ma Ru

IEEE Trans. Evolutionary Computation - Special Issue on Differential Evolution - 3 views

ieeexplore.ieee.org/...tocresult.jsp

inf optimisation differential evolution evolutionary computation

shared by Ma Ru on 03 Mar 11 - No Cached
  • Ma Ru on 03 Mar 11
     
    Dario - perhaps worth giving a look to be up-to-date... There's even an article "Improving Classical and Decentralized Differential Evolution with New Mutation Operator and Population Topologies". They quote our CEC paper, but not the ParCo.
  • ...1 more comment...
  • Ma Ru on 03 Mar 11
     
    Don't know if you have full text access, so here goes the quote: "Recently, Izzo et al. designed in [27] a heterogeneous asynchronous island model for DE. They considered five islands and five DE strategies (DE/best/1/exp, DE/rand/1/exp, DE/rand-to-best/1/exp, DE/best/2/exp, and DE/rand/2/exp), and studied five distributed DEs using the same DE strategy in all the islands, and a heterogeneous model with one different DE strategy in every island. As a result, the heterogeneous model is not outstanding, but performs as well as the others."
  • Joris _ on 03 Mar 11
     
    Isn't it a bit a paper-killing quote?
  • Ma Ru on 03 Mar 11
     
    :) It's in the context of a review of the work that's been done about DE with island model in general, they don't evaluate. Pity they didn't refer to the ParCo article on topologies, as it was a bit more extensive and more focused on the method (as they do in the article) rather than on the problem (as was our CEC paper, if I recall well).
Francesco Biscani

Eco - "Writings: IBM vs. Mac" - 5 views

www.themodernword.com/...eco_mac_vs_pc.html

inf

shared by Francesco Biscani on 07 Mar 11 - Cached
LeopoldS and Ma Ru liked it
  • The fact is that the world is divided between users of the Macintosh computer and users of MS-DOS compatible computers. I am firmly of the opinion that the Macintosh is Catholic and that DOS is Protestant.
  • Francesco Biscani on 07 Mar 11
     
    An amusing opinion piece by Italian writer Umberto Eco.
  • LeopoldS on 07 Mar 11
     
    read this first time 10 years ago - but always nice to re-read indeed ...
Luzi Bergamin

Prof. Markrams Hirnmaschine (Startseite, NZZ Online) - 2 views

www.nzz.ch/...s_hirnmaschine_1.10736223.html

AI neuroscience SciFi

shared by Luzi Bergamin on 29 May 11 - No Cached
  • Luzi Bergamin on 29 May 11
     
    A critical view on Prof. Markram's Blue Brain project (in German).
  • ...4 more comments...
  • Luzi Bergamin on 29 May 11
     
    A critical view on Prof. Markram's Blue Brain project (in German).
  • LeopoldS on 30 May 11
     
    so critical that the comment needed to be posted twice :-) ?
  • Luzi Bergamin on 30 May 11
     
    Yes, I know; I still don't know how to deal with this f.... Diigo Toolbar! Shame on me!!!
  • dejanpetkow on 30 May 11
     
    Would be nice to read something about the modelling, but it appears that there is nothing published in detail. Following the article, the main approach is to model each(!) neuron taking into account the spatial structure of the neurons positions. Once achieved they expect intelligent behaviour. And they need a (type of) supercomputer which does not exist yet.
  • Ma Ru on 31 May 11
     
    As far as I know it's sort of like "Let's construct an enormous dynamical system and see what happens"... i.e. a waste of taxpayer's money... Able to heal Alzheimer... Yeah... Actually I was on the conference the author is mentioning (FET 2011) and I have seen the presentations of all 6 flagship proposals. Following that I had a discussion with one of my colleagues about the existence of limits of the amount of bullshit politicians are willing to buy from scientists. Will there be a point at which politicians, despite their total ignorance, will realise that scientists simply don't deliver anything they promise? How long will we (scientists) be stuck in the viscous circle of have-to-promise-more-than-predecessors in order to get money? Will we face a situation when we'll be forced to revert to promises which are realistic? To be honest none of the 6 presentations convinced me of their scientific merit (apart from the one on graphene where I have absolutely no expertise to tell). Apparently a huge amount of money is about to be wasted.
  • Luzi Bergamin on 01 Jun 11
     
    It's not just "Let's construct an enormous dynamical system and see what happens", it's worse! Also the simulation of the cosmological evolution is/was a little bit of this type, still the results are very interesting and useful. Why? Neither the whole cosmos nor the human brain at the level of single neurons can be modelled on a computer, that would last aeons on a "yet-to-be-invented-extra-super-computer". Thus one has to make assumptions and simplifications. In cosmology we have working theories of gravitation, thermodynamics, electrodynamics etc. at hand; starting from these theories we can make reasonable assumptions and (more or less) justified simplifications. The result is valuable since it provides insight into a complex system under given, explicit and understood assumptions. Nothing similar seems to exist in neuroscience. There is no theory of the human brain and apparently nobody has the slightest idea which simplifications can be made without harm. Of course, Mr. Markram remains completely unaffected of ''details'' like this. Finally, Marek, money is not wasted, we ''build networks of excellence'' and ''select the brightest of the brightest'' to make them study and work at our ''elite institutions'' :-). I lively remember the stage of one of these "bestofthebest" from Ivy League at the ACT...
Ma Ru

P vs NP - 2 views

www.newscientist.com/...at-could-change-the-world.html

science INF

shared by Ma Ru on 08 Jun 11 - No Cached
  • Ma Ru on 08 Jun 11
     
    For non-computer scientists who ever wondered what is this thing that computer scientists keep babbling about after a few beers (apart from MtG)... Relatively correctly explained in this article.
LeopoldS

Official Google Blog: A new kind of computer: Chromebook - 3 views

googleblog.blogspot.com/...nd-of-computer-chromebook.html

technology INF

shared by LeopoldS on 12 May 11 - No Cached
  • LeopoldS on 12 May 11
     
    Francesco you will like this one ...
  • Francesco Biscani on 13 May 11
     
    Nahh... it's cloud com-poo-ting, it's all about taking control from the user into the corporation. To quote Stallman: "It's stupidity. It's worse than stupidity: it's a marketing hype campaign [...] Somebody is saying this is inevitable - and whenever you hear somebody saying that, it's very likely to be a set of businesses campaigning to make it true."
  • LeopoldS on 15 May 11
     
    but it comes from google! :-)
Francesco Biscani

xkcd: The Cloud - 4 views

xkcd.com/908

fun inf

shared by Francesco Biscani on 09 Jun 11 - No Cached
  • Francesco Biscani on 09 Jun 11
     
    Cloud computing explained.
jmlloren

Hack the multiverse - 1 views

dwave.wordpress.com

NAN INF

shared by jmlloren on 20 Jul 11 - Cached
LeopoldS liked it
  • jmlloren on 20 Jul 11
     
    Interesting blog maintained by the people from D-Wave, who developed the first commercial quantum computer. The blog presents a python implementation to program the D-Wave and some examples.
LeopoldS

The Army's Bold Plan to Turn Soldiers Into Telepaths | Machine-Brain Connections | DISC... - 0 views

discovermagazine.com/...n-turn-soldiers-into-telepaths

bio technology BMI

shared by LeopoldS on 25 Jul 11 - No Cached
  • LeopoldS on 25 Jul 11
     
    "The mind reader is Gerwin Schalk, a 39-year-old biomedical scientist and a leading expert on brain-computer interfaces at the New York State Department of Health's Wads­worth Center at Albany Medical College. The 28Austrian-born Schalk, along with a handful of other researchers, is part of a $6.3 million U.S. Army project to establish the basic science required to build a thought helmet-a device that can detect and transmit the unspoken speech of soldiers, allowing them to communicate with one another silently." ...
  • Ma Ru on 01 Aug 11
Luís F. Simões

When Astronomy Met Computer Science | Cosmology | DISCOVER Magazine - 1 views

discovermagazine.com/...astronomy-met-computer-science

astronomy INF data mining

shared by Luís F. Simões on 25 Jul 11 - No Cached
LeopoldS liked it
  • “That’s impossible!” he told Borne. “Don’t you realize that the entire data set NASA has collected over the past 45 years is one terabyte?”
  • The LSST, producing 30 terabytes of data nightly, will become the centerpiece of what some experts have dubbed the age of peta­scale astronomy—that’s 1015 bits (what Borne jokingly calls “a tonabytes”).
  • A major sky survey might detect millions or even billions of objects, and for each object we might measure thousands of attributes in a thousand dimensions. You can get a data-mining package off the shelf, but if you want to deal with a billion data vectors in a thousand dimensions, you’re out of luck even if you own the world’s biggest supercomputer. The challenge is to develop a new scientific methodology for the 21st century.”
  • LeopoldS on 25 Jul 11
     
    Francesco please look at this and get back wrt to the /. question .... thanks
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