A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
First DNA-based Artificial Neural Network
Caltech researchers have demonstrated a small, four-cell neural network capable of simple problem-solving. This DNA-based artificial neural network uses DNA strand displacement cascades to recognize patterns in molecular events.
(DNA-based artificial neural network)
The neural network is made up of just four artificial neurons, as opposed to the human brain's 100 billion real ones.
To test the network, the scientists played a game with it. That game started with the network being trained to "know" four scientists, each one identifiable by a unique combination of yes/no answers to the same four questions (such as "Is the scientist British?"). Human players then chose one of those scientists, and provided the network with an incomplete set of the identifying answers. They did this by dropping DNA strands that were programmed to correspond to those answers, into water in a test tube that contained the neurons.
Communicating through fluorescent signals, the network would then either correctly identify the chosen scientist, it would indicate that it didn't have enough data to identify just one scientist, or it would state that the data didn't match any of the scientists.
This technology may one day give us intellectual cells like the ones in Greg Bear's excellent 1984 novel Blood Music:
His first E. coli mutations had had the learning capacity of planarian worms; he had run them through simple T-mazes, giving sugar rewards. They had soon outperformed planaria...
Removing the finest biologic sequences from the altered E. coli, he had incorporated them into B-lymphocytes, white cells from his own blood...Using artificial proteins and hormones as a means of communication, Vergil had "trained" the lymphocytes in the past six months to interact as much as possible with each other and with their environment - a much more complex miniature glass maze.
For now, the computational process is not quite up to the speed of silicon; the network takes about eight hours to respond.
From Nature via Gizmag.
Scroll down for more stories in the same category. (Story submitted 7/24/2011)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
Harmonia Making Generative Audio Tools For Everyone
'A cacophony of stentorious metal sounds.' - Ray Cummings, 1941.
Artists Replaced By Robots? Everyone's a Patron Now
'The results would not be happy; a schizoid painting was bound to ensue.' - FL Wallace, 1953
Mem, The All-Your-Memories, Super Note-Taking App
'Life experience is linearly additive, but the correlation of memory impressions is an unlimited expansion.' - Robert Heinlein, 1941.
Copilot Software AI Training Sued By Involuntary Contributors
'...we've promised him a generous pension from the royalties.' - Anthony Boucher, 1943.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
'Courier Commons' By Tomorrow Lab, From Karl Schroeder (and Bruce Sterling?)
'The pokkecon rang again. *The coffee’s for him?* Tsuyoshi said.'
Terrifying Robotic Apple Harvester
'... little machines, that went from plant to plant.'
Jetson-Style Clockwork Robot Nail Salon Coming To Target Near You
The Jetsons imagined so much future.
Mechanical Horse Sculpture Gallops In Place
'Rod placed the brain inside the panel... the horse raised its head, wiggled its ears, blinked twice, gave a tentative whinny.'
'Make Sunsets' Tweaks Climate By Atmospheric Alteration
'Pina2bo would have to operate full blast for many years to put as much SO2 into the stratosphere as its namesake had done in a few minutes.'
Eviation Alice Electric Plane First Flight
'A white electric plane approached at great speed...'
Hotels Turn To Robots As Human Workers Regroup
'Chain of hotels that specialized in non-human service.'
Changesite Mineral To Be Mined On Moon By China
'But then... not every bulldozer operator works on the Moon.'
Tongue-Controlled Tong Wearable Mouth Computer
'Griff found the white and pink map distracting and switched it off using his tongue mouse.'
Is It Better To Be Short?
'He was one of the smaller, energy-saving new breed...'
Taikonaut Tai Chi Foot Loops
'Jimmy Cardigan and Harlowe, staring through the darkside port, had their feet in the foot-loops...'
Space Billboards Would Ruin Our View Of The Cosmos
'But the rising sign, as it had been designed to do, held his eyes. A vast circle of scarlet stars came up into the greenish desert dusk.'
Orion's 'Skip-to-M'Lou' Entry
'A lightning pilot possibly could land that tin toy without power and still walk away from it provided he had the skill to play Skip-to-M’Lou in and out of the atmosphere...'
MarsCat and MetaCat, Your Robot Cat Companions
'It was you who betrayed me — you and your robot cat.'
Mars Mission Using Nuclear Thermal Propulsion
'with its atomic engine as noiseless as a dancing sunbeam...'
Physiotherapists Get Help From Robots
'Most of the Members went into cold-rest; the others tended them...'
More SF in the News Stories
More Beyond Technovelgy science news stories