Stiinta

[joonior_bmf]

Ear anatomy may amplify irritating tones of chalkboard squeak

[Apollyon]

BBC: Google’s AI beats world Go champion in first of five matches

In a landmark battle between man and artificial intelligence (AI), the world champion of the game Go was narrowly defeated by his computer opponent.

A computer has beaten the world chess champion, but the Chinese game Go is seen as significantly more complex.

Go is a 3,000-year old Chinese board game and is considered to be a lot more complex than chess where artificial intelligence scored its most famous victory to date when IBM's Deep Blue beat grandmaster Gary Kasparov in 1997.

But experts say Go presents an entirely different challenge because of the game's incomputable number of move options which means that the computer must be capable of human-like "intuition" to prevail.

[Mărar]

Sleep in Vitro

Neurons co-cultured with glial cells display patterns of action potentials and slow (delta) waves, suggesting that small neural networks can and do sleep, even outside of the body. In culture, neurons fire in bursts, and slow-wave electrical activity is synchronized while in a default sleep-like state. However, if the culture is stimulated with electricity or excitatory neurotransmitters, delta-wave amplitude and the neurons’ synchrony, or burstiness, are reduced, suggesting that the culture “wakes up.” Conversely, the addition of TNF-α, a sleep-inducing agent, increases burstiness and the amplitudes of delta waves.

We, Obál, and our colleagues proposed that whole-brain sleep is an emergent property resulting from the synchronization of local neuronal network states.7,8,9 This would explain why sleep continues to occur after brain damage: because the remaining local circuits will spontaneously synchronize with each other. This view also allows one to easily envision variations in the depth or degree of sleep and waking because it allows for some parts of the brain to be in sleep-like states while other areas are in wake-like states, just as Rector observed. These independent states of local networks may account for sleep inertia, the minutes-long period upon awakening of poor cognitive performance and fuzzy-mindedness, and may also play a role in the manifestation of dissociated states such as sleepwalking. Most importantly, this paradigm frees sleep regulation from the dualism trap of mind/brain separation: top-down imposition of state is not required for the initiation of local state oscillations or for subsequent whole-organism sleep to ensue.

Full article

[vulp]

Born to kill die fuck sleep.

[vulp]

Learning from Tay’s introduction
Posted March 25, 2016 By Peter Lee - Corporate Vice President, Microsoft Research

As many of you know by now, on Wednesday we launched a chatbot called Tay. We are deeply sorry for the unintended offensive and hurtful tweets from Tay, which do not represent who we are or what we stand for, nor how we designed Tay. Tay is now offline and we’ll look to bring Tay back only when we are confident we can better anticipate malicious intent that conflicts with our principles and values.

I want to share what we learned and how we’re taking these lessons forward.

For context, Tay was not the first artificial intelligence application we released into the online social world. In China, our XiaoIce chatbot is being used by some 40 million people, delighting with its stories and conversations. The great experience with XiaoIce led us to wonder: Would an AI like this be just as captivating in a radically different cultural environment? Tay – a chatbot created for 18- to 24- year-olds in the U.S. for entertainment purposes – is our first attempt to answer this question.

As we developed Tay, we planned and implemented a lot of filtering and conducted extensive user studies with diverse user groups. We stress-tested Tay under a variety of conditions, specifically to make interacting with Tay a positive experience. Once we got comfortable with how Tay was interacting with users, we wanted to invite a broader group of people to engage with her. It’s through increased interaction where we expected to learn more and for the AI to get better and better.

The logical place for us to engage with a massive group of users was Twitter. Unfortunately, in the first 24 hours of coming online, a coordinated attack by a subset of people exploited a vulnerability in Tay. Although we had prepared for many types of abuses of the system, we had made a critical oversight for this specific attack. As a result, Tay tweeted wildly inappropriate and reprehensible words and images. We take full responsibility for not seeing this possibility ahead of time. We will take this lesson forward as well as those from our experiences in China, Japan and the U.S. Right now, we are hard at work addressing the specific vulnerability that was exposed by the attack on Tay.

Looking ahead, we face some difficult – and yet exciting – research challenges in AI design. AI systems feed off of both positive and negative interactions with people. In that sense, the challenges are just as much social as they are technical. We will do everything possible to limit technical exploits but also know we cannot fully predict all possible human interactive misuses without learning from mistakes. To do AI right, one needs to iterate with many people and often in public forums. We must enter each one with great caution and ultimately learn and improve, step by step, and to do this without offending people in the process. We will remain steadfast in our efforts to learn from this and other experiences as we work toward contributing to an Internet that represents the best, not the worst, of humanity.

[Apollyon]

So she'll be back.

[vulp]

But she will be... different...

In orice caz, XiaoIce suna tare, iar combinat cu Tay ar fi un avans important pentru barbati pe battlegroundul barfelor (unde femeile au drept competitie doar serviciile secrete si masonii).

[joonior_bmf]

Radioactive wild boars rampaging around Fukushima nuclear site

[Cristan]

Breakthrough Starshot announces plans to send ship to Alpha Centauri

si inregistrarea video a evenimentului

phpBB [video]

Site oficial. Si ultimele mici detalii de pus la punct.

[joonior_bmf]

How the brain produces consciousness in “time slices”

http://journals.plos.org/plosbiology/ar ... io.1002433

[Mărar]

“There is no advantage in making you aware of its unconscious processing, because that would be immensely confusing.”

Mai degraba imposibil din punct de vedere computational.


edit: Mutat offtopic-ul.

[Mărar]

CMS releases new batch of research data from LHC

Today, the CMS Collaboration at CERN has released more than 300 terabytes (TB) of high-quality open data. These include over 100 TB, or 2.5 inverse femtobarns (fb−1), of data from proton collisions at 7 TeV, making up half the data collected at the LHC by the CMS detector in 2011. This follows a previous release from November 2014, which made available around 27 TB of research data collected in 2010.

These data are being made public in accordance with CMS’s commitment to long-term data preservation and as part of the collaboration’s open-data policy. “Members of the CMS Collaboration put in lots of effort and thousands of person-hours each of service work in order to operate the CMS detector and collect these research data for our analysis,” explains Kati Lassila-Perini, a CMS physicist who leads these data-preservation efforts. “However, once we’ve exhausted our exploration of the data, we see no reason not to make them available publicly. The benefits are numerous, from inspiring high-school students to the training of the particle physicists of tomorrow. And personally, as CMS’s data-preservation co-ordinator, this is a crucial part of ensuring the long-term availability of our research data.”

[Doc]

trebuie sa-mi iau hard nou...

[joonior_bmf]

15 year old boy discovers lost Mayan city using star maps

[bionicron]

15 year old boy discovers lost Mayan city using star maps

putin probabil... http://www.snopes.com/canadian-teen-satellite-maps/

in plus, nu inteleg cum anume ceva "se aliniaza" unei stele/constelatii? Exceptand axa de rotatie a terrei, aceasta.... se invarte intr-una, si deci orice perpendiculara ai trage din alt loc, vei desena cercuri maaari pe firmament, 24 din 24....

[Mafio]

Descoperirea a fost deja respinsă în mod definitiv de experți. Nothing to talk about here.

[joonior_bmf]

Da, aveam de gand sa rectific. Cica ar fi de fapt un camp abandonat ("milpa"). Dar pana la urma, doar o expeditie ar clarifica situatia.

http://gizmodo.com/experts-doubt-that-a ... 1775985640

[Soarecu]

Nu zic ca RIP, dar RIP

[Doc]

In noiembrie, cercetatorii britanici si cei din China au descoperit aceeasi tulpina la porci, in carnea cruda, precum si la un grup mic de chinezi.
***

Cate milioane inseamna "un grup mic de chinezi"?

[Stokkolm]

phpBB [video]