WASHINGTON nike air max 90 mens ireland , Feb. 2 (Xinhua) -- An international team has shown that quantum computers can analyze relationships within large sets of data faster than classical computers, for a wider array of data types than previously expected.

The study, published on Friday in American journal Physical Review Letters, proposed a "quantum linear system algorithm" that could conduct quantum computation with application in artificial intelligence (AI) and crunch numbers on problems such as commodities pricing nike air max 90 mens , social networks and chemical structures.

The linear system algorithm, first proposed in 2009, works on a large matrix of data and has kick-started research into quantum forms of machine learning, or artificial intelligence.

"There is a lot of computation involved in analyzing the matrix. When it gets beyond say 10 cheap nike air max 90 ,000 by 10,000 entries, it becomes hard for classical computers," explained Zhao Zhikuan nike air max 90 ireland , the paper's corresponding author from Singapore University of Technology and Design.

Zhao also said the previous quantum algorithm of this kind can be applied to a very specific type of problem. This is because the number of computational steps goes up rapidly with the number of elements in the matrix: every doubling of the matrix size increases the length of the calculation eight-fold.

Zhao and his colleague in Singapore, Switzerland and the United Kingdom, present a new algorithm that is faster than both the classical and the previous quantum versions.

It relies on a technique known as quantum singular value estimation and can cope with data not limited to "sparse" ones as required by the previous versions.

There are limited relationships among the elements in sparse data, but it is often not true of real-world data nike air max 2018 womens , Zhao said.

For example, a trader might be trying to predict the future price of goods. The matrix may capture historical data about price movements over time and data about features that could be influencing these prices, such as exchange rates.

Then the algorithm calculates how strongly each feature is correlated with another by "inverting" the matrix. This information can then be used to extrapolate into the future.

But to show a real quantum advantage over the classical algorithms will need bigger quantum computers.

Zhao estimates that it still need additional three to five years when they can actually use the hardware to do meaningful quantum computation with application in artificial intelligence.

MOSCOW, Feb. 2 (Xinhua) -- Russian President Vladimir Putin Friday took part in the celebration of the 75th anniversary of a major battle against Nazi Germany in World War II (WWII).

The Battle of Stalingrad nike air max 2018 ireland , which is the former name of Volgograd, was one of the longest battles during WWII, fought from August 1942 to February 1943. It radically changed the course of the war, heralding the victory over Nazi Germany in 1945.

Putin addressed WWII veterans and other guests at the solemn event in the city of Volgograd on the Volga River.

The defenders of Stalingrad left a great heritage -- love for the motherland nike air max 2018 , readiness to defend its interests and independence, standing firm in any trial, and working for the country's prosperity, Putin said.

"We have no right to leave uncompleted work cheap nike air max 2017 , to show cowardice and indecisiveness. We must follow the example of our fathers and grandfathers to be worthy of their accomplishments, to be ready to reach the set goals, and to achieve more than we have already achieved," he said.

Putin visited the Battle of Stalingrad memorial complex nike air max 2017 womens ireland , laid a wreath at the Eternal Flame in the Hall of Military Glory and honored the memory of Soviet troops with a minute of silence.

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