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DateDate: 15-04-2019, 05:47

OpenAI, a research organization in artificial intelligence, can claim to be in the first place in the world: its AI system, trained to play the complex strategic game Dota 2, has surpassed the world champion team in eSports. Reported by The Verge. The OpenAI Five Finals competition was held April 13 in San Francisco.
The top five Dota 2 professionals from the OG team, which won the eSports prize last year - $ 25 million, won first place in the international Dota 2 tournament. OG met in the "best of three" competition with five OpenAI bots. All of them were trained using the same deep learning methods with reinforcement and independently controlled by different levels of the same system.
Reinforcement training is a method of trial and error for self-improvement, in which the AI enters the gaming environment with a zero understanding of how the game works and intensively trains using reward systems and other incentive mechanisms.
"OpenAI Five is based on deep learning, which means that we programmed AI for learning and not for the game. In 10 months of existence, he has already played 45,000 years in Dota 2," said co-founder and chairman of OpenAI, Greg Brockman.
In the first match of the day, OpenAI Five surprised OG with its victory, based on a number of aggressive tactics, including a kind of decision to spend the earned game currency to instantly revive the heroes after death, even at the beginning of the match. As noted by Greg Brockman, OpenAI loves strategies that contribute to short-term profit by identifying weaknesses in long-term planning. In this match, this tactic paid off and OpenAI Five got an advantage, which OG simply could not overcome, because the match was delayed to 30 minutes.
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For OpenAI, the victory here is evidence that the reinforced learning approach and the general philosophy about AI are successful. The research team will no longer hold public demonstrations of its AI-bot, now it is developing software that will allow people to collaborate with the OpenAI Five in real time, playing in a team with bots and learning from them unusual, unprecedented strategies and behaviors. The organization also introduced a platform for the game against OpenAI Five - Arena.
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OpenAI states that collaboration software may not be publicly available. But, according to Sam Altman, co-founder and CEO of OpenAI, this type of work suggests that working with AI agents can lead to huge benefits in the future.
"This is an important lesson about how the world will work and teach such things. Cooperation is one of the most positive ideas about the future of the world - AI works together with people to make people better, to bring them more pleasure and influence," says Altman .
OpenAI will continue to play Dota 2 and other games, primarily because they are good test sites for artificial intelligence and tools for performance testing. As Altman argues, there is probably no video game now that a system like the OpenAI Five would not have been able to master at a level that exceeds human capabilities.
"OpenAI is trying to create a common artificial intelligence and share these benefits with the world, ensuring its security," commented Altman, referring to the desire to implement a multi-purpose AI system capable of performing any task that a person can perform.

DateDate: 14-04-2019, 07:32

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DateDate: 14-04-2019, 07:28

Today, getting from point A to point B is not so difficult. Even if you do not know the city or area - one of the many navigation systems or the same maps from Google will tell you the way. Now imagine a situation in which, for sure, many turned out to be: you got to the destination, enter the building and ... get lost. Where to go? Where is my office / store / department? It is quite possible that such situations will soon be avoided, because the US company is developing a technology for mapping and indoor navigation based on augmented reality (AR).
It is worth noting that Apple already promised something similar to us. Only here the Cupertini built their system on iBeacon devices that need to be installed. Immediately, no "beacons" are needed. Only a smartphone is needed.
Everything works quite simply: the technology is integrated into the internal maps of the premises. Thanks to this, she can find out where the user is at the moment, and then show the right directions on the smartphone screen. To do this, use the camera of the device, which "removes" the room, and the path is projected on the screen in real time. In fact, this is very similar to the AR mode in Google Maps, except that it is intended for indoor use and not for street navigation.
The development is called Dent Reality and the software part relies on both GPS data and special algorithms for determining the position of the user. Algorithms include methods for measuring distance, recognizing objects inside a building, and options for displaying a virtual path with incredible accuracy.
Moreover, the program is based on an open SDK, so third-party developers can make their own improvements in it, as well as use the software part to develop their products of a similar theme. In addition, the developers have opened access to the materials on the basis of which the algorithms were built.
At the moment, the technology looks very promising, but it is at a very early stage and still far from release. However, if the developers and their partners succeed, we will get a very convenient tool for orientation in unfamiliar rooms.
Source: androidinsider.ru

DateDate: 13-04-2019, 06:39

The device is based on the principle of absorption and heat during deformation of the metal.
A group of German researchers at Saarland University (Saarland University) has created an unusual heating-cooling system, which, when used in refrigeration, can at least be three times more efficient than modern similar devices, not to mention its other advantages, reports Chronicle.info with referring to Esoreiter.
If we speak in a somewhat simplified language, then the essence of this refrigeration generator lies in a rotating cylinder, on which the nitinol wire is wound, which stretches in one direction of rotation, and in another is compressed. Nitinol (a unique alloy) is capable of absorbing heat when it is expanded, and when it returns to its original position, it can give off. Experiments have shown that the temperature difference in this case can reach, even at the minimum value, 20 degrees.
This is what one of the co-authors of this invention, Professor Stefan Seeleke, says about this:
We were able to calculate the diameter and size of the nitinol wire, the speed of the drum, the parameters of the air flow from the fan and so on, as a result of which we achieved not only an impressive temperature difference of 20 degrees Celsius, but also the system power 30 times greater than the effort required by the operation of this installation.
It is three times more efficient than a modern refrigerator. But in principle, in the future when creating industrial units of this type, the indicators can be improved several times. Moreover, this refrigerator does not consume toxic substances (environmentally friendly), does not require hermetic pipes, heat exchangers and other intermediate links.
See also: The man told what he saw during clinical death
There is only one very important question: if the nitinol wire will constantly expand and shrink again, how much is enough? But it turns out that this alloy differs from many others in its fantastic fatigue resistance, which makes nitinol, for example, used in arterial stents, which allows such an implant to shrink, curl, stretch and so on along with the blood vessel for an infinitely long time. In addition, this metal is relatively cheap, which, together with countless expansion-compression cycles, makes it optimal for the cooling system in question.

DateDate: 12-04-2019, 05:56

In Switzerland, completed the first house, which was built by robots, designed computers, and parts made 3D-printers. So far, however, with the participation of man. In Switzerland, they put into operation a house that was built by Digital Manufacturing and Living robots - this is how its name (Digital Fabrication and Living) stands for. DFAB HOUSE is a joint demonstration of the digital production of the Swiss National Center for Competence in Research (NCCR) in the NEST (Nest) building. As part of a full-featured construction project, researchers from Zurich (ETH Zurich), Switzerland, have gathered together with industry experts and planners to explore and test how digital production can change our design and construction methods.
The “house on the roof” space is planned to be used not only as housing, but also as a testing ground, on which construction and technological innovations will be tested in real conditions. Within this project, for the first time, six new digital construction processes were transferred from research to architectural applications:
In situ Fabricator, the universal autonomous building robot;
Mesh Mold, a non-formwork robotic process for reinforced concrete structures;
Smart Dynamic Casting, an automated concrete molding process;
Smart Slab, built-in ceiling tiles made with 3D-printed formwork;
Spatial assembly of wooden structures;
Robotic construction of wood.
Combining these new processes in a single constructed facility allows you to rethink the entire planning and construction process and use the advantages inherent in the digital chain of design, planning and manufacturing: design flexibility, saving material, saving time and cost and improving quality. It is already clear that the architectural potential of digital technology is enormous, but is almost never used on construction sites. Experimental projects like DFAB should speed up the transition from theory to practice, says ETH Zurich professor Matthias Kohler. The house turned out to be futuristic: the blinds are raised on command and the water in the kettle starts to boil; It has a multi-stage security and lighting control system.
The work of the smart home is provided by digitalSTROM equipment. The “smart” technologies of this house work not only at the household level, they also help to control energy consumption. Solar cells on the roof provide energy - on average, one and a half times more than is necessary to maintain the house, and the “intelligent” control system controls its consumption and smoothes the load peaks. That is, it is an "active home". Heat from wastewater is not wasted, but transferred further through heat exchangers installed in shower trays. Unused hot water is returned through the pipes back to the boiler, which allows not only to save energy and water, but also to prevent the growth of bacteria in the pipes.