Showing posts with label Learning. Show all posts
Showing posts with label Learning. Show all posts

Wednesday, March 18, 2015

Mind Behind the Learning a Brain's Functionality of Deep Concepts

""Researchers provided 16 healthy adult volunteers with a series of instructions on four mechanical items, detailing how each of them work. The participants were also given diagrams of the bathroom scale, fire extinguisher, trumpet, and car brake system.
As they were learning this new information, the scientific team used fMRI to scan their brains. They followed how each concept made its way from the input of words and images through the brain's various regions. They found that learning how something works is a several-stage process that occurs in different parts of the brain.
First, the visual part of the brain is activated by looking at the images. The middle stages follow with "mental animation" — inwardly picturing the functioning of the given item. That involves the parietal, temporal and frontal regions of the brain. Finally, the frontal and motor brain regions are activated by imagining what it would be like to engage with the particular object — putting everything that has been learned to use.
For example, after seeing the image of the bathroom scale, the volunteers' brains processed the information visually. Then other parts of their brains helped them understand how each part inside the scale moved. Finally, their brains imagined how the scale works.
"This provides evidence that appropriate instruction can bring out the fundamental understanding of how things work at a deep level," said Robert Mason, lead author of the study. "In the future, teaching to this deep level as measured in terms of brain representations may be applicable to other disciplines and scientific concepts."
Understanding how the brain processes technical information could help scientists program artificial intelligence to "think" in similar ways, although such advanced AI is a ways off.
In the more immediate sense, the research could see application in the classroom, especially in understanding how well the combination of images and text can work in teaching students science and math.""

Thursday, January 22, 2015

Robots Use Youtube Learning Tutorials to Cook Food at Institute for Advanced Computer Studies




""When it comes to teaching robots how to do things, there are some very key differences. A human knows what you mean when you say "I need a cup". A robot needs to be taught that that means it has to turn around, go to the cupboard, open it, take out the cup, close the cupboard, turn back around, return to you, manoeuvre the cup over the bench, and release the cup.

This is one of the key parts of figuring out machine learning: How can you program a robot so that it can intuit that a plastic cup, a glass and a mug may all be classified under the general term "cup"? How can you design a robot that is able to teach itself?

One way, as researchers at the University of Maryland Institute for Advanced Computer Studies are finding out, is YouTube. More specifically, cooking tutorials on YouTube. By watching these videos, robots are able to learn the complicated series of grasping and manipulation motions required for cooking by observing what humans do on the Internet.



"We chose cooking videos because everyone has done it," said UMD professor of computer science and director of the UMIACS Computer Vision Lab Yiannis Aloimonos. "But cooking is complex in terms of manipulation, the steps involved and the tools you use. If you want to cut a cucumber, for example, you need to grab the knife, move it into place, make the cut and observe the results to make sure you did them properly."

The robot uses several key systems in order to learn from YouTube videos. Computer vision, with two different recognition systems, allows the robot to visually process how the presenter grabs something, artificial intelligence processes that information, and finally language parsing helps it understand spoken commands and translate it into an action.

In this way, the robot can gather individual steps from various videos and assign them rules according to its programming, putting them together in the correct order.""



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