Artificial intelligence is becoming sustainable

Artificial intelligence is becoming sustainable!
Memristor crosspoint array Credit: Politecnico di Milano

A research group from Politecnico di Milano has developed a new computing circuit that can execute advanced operations, typical of neural networks for artificial intelligence, in one single operation.

The circuit performance in terms of speed and paves the way for a new generation of computing accelerators that are more energy efficient and more sustainable on a global scale. The study has been recently published in the prestigious Science Advances.

Recognizing a face or an object, or correctly interpreting a word or a musical tune are operations that are today possible on the most common electronic gadgets, such as smartphones and tablets, thanks to artificial intelligence. For this to happen, complicated neural networks needs to be appropriately trained, which is so energetically demanding that, according to some studies, the that derives from the training of a complex can equal the emission of 5 cars throughout their whole life cycle.

To reduce the time and energy consumption of the training, one should develop circuits that are radically different from the conventional approach and that are able to mimic more accurately the structure of the neural networks and the characteristics of the biological synapses. A typical example is the concept of in-memory computing, where data are processed directly within the memory, exactly like in the human brain.

Based on this analogy, the research group at Politecnico di Milano have developed a novel circuit that can execute a known as regression in just one operation. For this purpose they use a resistive memory, also known as memristor, a device that can memorize any datum (for example the value of a share at a certain time) in the value of its resistance. By arranging these memory elements within an array with the size of a few micrometers (a few millionths of a meter), the group at Politecnico di Milano has been able to execute a linear regression on a group of data.

This operation is capable of determining the that best describes a sequence of data, allowing, for instance, to predict the trend in the based on a simple linear model. Logistical regression, which allows the classification of data within a database, has also been demonstrated. This function is essential for the so-called recommendation systems, that are a crucial marketing tools for online purchases.


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More information: Zhong Sun et al, One-step regression and classification with cross-point resistive memory arrays, Science Advances (2020). DOI: 10.1126/sciadv.aay2378
Journal information: Science Advances

Provided by Politecnico di milano
Citation: Artificial intelligence is becoming sustainable (2020, February 13) retrieved 21 February 2020 from https://techxplore.com/news/2020-02-artificial-intelligence-sustainable.html
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