Berkeley

As “Artificial Intelligence” Advances, Robots Learn Via Trial and Error

Published

10 years ago

May 30, 2015

By Sarah Yang, UC Berkeley News

UC Berkeley researchers have developed algorithms that enable robots to learn motor tasks through trial and error using a process that more closely approximates the way humans learn, marking a major milestone in the field of artificial intelligence.

They demonstrated their technique, a type of reinforcement learning, by having a robot complete various tasks — putting a clothes hanger on a rack, assembling a toy plane, screwing a cap on a water bottle, and more — without pre-programmed details about its surroundings.

“What we’re reporting on here is a new approach to empowering a robot to learn,” said Professor Pieter Abbeel of UC Berkeley’s Department of Electrical Engineering and Computer Sciences. “The key is that when a robot is faced with something new, we won’t have to reprogram it. The exact same software, which encodes how the robot can learn, was used to allow the robot to learn all the different tasks we gave it.”

The latest developments were presented on Thursday in Seattle at the International Conference on Robotics and Automation (ICRA). Abbeel is leading the project with fellow UC Berkeley faculty member Trevor Darrell, director of the Berkeley Vision and Learning Center. Other members of the research team are postdoctoral researcher Sergey Levine and Ph.D. student Chelsea Finn.

The work is part of a new People and Robots Initiative at UC’s Center for Information Technology Research in the Interest of Society (CITRIS). The new multi-campus, multidisciplinary research initiative seeks to keep the dizzying advances in artificial intelligence, robotics and automation aligned to human needs.

“Most robotic applications are in controlled environments where objects are in predictable positions,” said Darrell. “The challenge of putting robots into real-life settings, like homes or offices, is that those environments are constantly changing. The robot must be able to perceive and adapt to its surroundings.”

Conventional, but impractical, approaches to helping a robot make its way through a 3D world include pre-programming it to handle the vast range of possible scenarios or creating simulated environments within which the robot operates.

Instead, the UC Berkeley researchers turned to a new branch of artificial intelligence known as deep learning, which is loosely inspired by the neural circuitry of the human brain when it perceives and interacts with the world.

“For all our versatility, humans are not born with a repertoire of behaviors that can be deployed like a Swiss army knife, and we do not need to be programmed,” said Levine. “Instead, we learn new skills over the course of our life from experience and from other humans. This learning process is so deeply rooted in our nervous system, that we cannot even communicate to another person precisely how the resulting skill should be executed. We can at best hope to offer pointers and guidance as they learn it on their own.”

In the experiments, the UC Berkeley researchers worked with a Willow Garage Personal Robot 2 (PR2), which they nicknamed BRETT, or Berkeley Robot for the Elimination of Tedious Tasks.

They presented BRETT with a series of motor tasks, such as placing blocks into matching openings or stacking Lego blocks. The algorithm controlling BRETT’s learning included a reward function that provided a score based upon how well the robot was doing with the task.

Abbeel says the field will likely see significant improvements as the ability to process vast amounts of data improves.

“With more data, you can start learning more complex things,” he said. “We still have a long way to go before our robots can learn to clean a house or sort laundry, but our initial results indicate that these kinds of deep learning techniques can have a transformative effect in terms of enabling robots to learn complex tasks entirely from scratch. In the next five to 10 years, we may see significant advances in robot learning capabilities through this line of work.”

The Defense Advanced Research Projects Agency, Office of Naval Research, U.S. Army Research Laboratory and National Science Foundation helped support this research.

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Progressive Missionary Baptist Church of Berkeley Celebrates 90th Anniversary

Dr. Earl C. Stuckey, Sr., who has served as Progressive Missionary’s pastor since September 1977, said the church also delights in the fact that it has hosted only five pastors in its 90-year history, including Pastors James E. Moore, H. A. Green, F. Douglas Farrell, and Edward Stovall, who served for 37 years.

Published

1 week ago

May 16, 2025

Oakland Post

Progressive Missionary Baptist Poster. Dr. Earl C. Stuckey, Sr., Pastor of Progressive Missionary Baptist Church in Berkeley with his wife, Kay Frances Stuckey.

By Oakland Post Staff

The Progressive Missionary Baptist Church of Berkeley is celebrating its 90th church anniversary on Sunday, May 18 at 10 a.m. at 3301 King Street in Berkeley.

The celebration will feature Pastor Darnell Manuel of the Union Baptist Church in Vallejo as guest speaker, along with many other special presentations.

Those who wish to share in Progressive’s history can purchase a 100-page full-colored souvenir book for $25.

The church boasts a number of notable people who either regularly attended or became members of the church since its inception, including former Alameda County Supervisor Keith Carson, Oakland mayoral candidate Loren Taylor, and one of the organizers of the Gospel Music Workshop of America, Helen J. H. Stephens.

Pastor Stuckey often remarks how longevity flourishes at the church — it boasts 13 centenarians (people who have reached 100 years or more). Currently, it has one centenarian who is still surviving, Mrs. Dorothy Chambers, and 14 members who have reached 90 years or more.

Recently, on Feb.17, the pastor and his wife Kay Frances, celebrated their 73rd wedding anniversary.

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Faces Around the Bay: Author Karen Lewis Took the ‘Detour to Straight Street’

“My life has been a roller-coaster with an unlimited ride wristband! I was raised in Berkeley during the time of Ron Dellums, the Black Panthers, and People’s Park. I was a Hippie kid, my Auntie cut off all our hair so we could wear the natural styles like her and Angela Davis.

Published

4 weeks ago

April 28, 2025

Oakland Post

Karen Lewis. Courtesy photo.

By Barbara Fluhrer

I met Karen Lewis on a park bench in Berkeley. She wrote her story on the spot.

I got married young, then ended up getting divorced, raising two boys into men. After my divorce, I had a stroke that left me blind and paralyzed. I was homeless, lost in a fog with blurred vision.

Jesus healed me! I now have two beautiful grandkids. At 61, this age and this stage, I am finally free indeed. Our Lord Jesus Christ saved my soul. I now know how to be still. I lay at his feet. I surrender and just rest. My life and every step on my path have already been ordered. So, I have learned in this life…it’s nice to be nice. No stressing, just blessings. Pray for the best and deal with the rest.

Nobody is perfect, so forgive quickly and love easily!”

Lewis’ book “Detour to Straight Street” is available on Amazon.

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Golden State Warriors Program Is Inspiring Next Generation of Female Engineers

Breaking down barriers and biases that deter young girls from pursuing STEAM subjects is essential for creating a level playing field and ensuring equal opportunities for all. By challenging stereotypes and promoting a culture of inclusivity and diversity in STEAM fields, experts believe young girls can be empowered to pursue their interests and aspirations without limitations confidently. Encouraging mentorship, providing access to resources, and celebrating girls’ achievements in STEAM are all crucial steps in creating a supportive environment that fosters success.

Published

2 months ago

March 23, 2025

Oakland Post

Front Row: UC Berkeley Steel Bridge Team Back Row: Girls, Inc. Participants. Photo courtesy of the Golden State Warriors.

By Y’Anad Burrell

The Golden State Warriors and e-commerce giant Rakuten are joining forces to inspire the next generation of female engineers through Building STEAM Futures, part of The City Calls campaign.

Organizers say the initiative is founded on the idea that science, technology, engineering, arts, and mathematics (STEAM) are crucial fields for innovation and progress, and empowering young girls to pursue careers in these areas is more important than ever. Studies consistently show that girls are underrepresented in STEAM fields, resulting in a gender disparity that limits potential and hinders diversity.

On Saturday, March 8, International Women’s Day, the Warriors and Rakuten hosted 20 middle school girls from Girls Inc. of Alameda County at Chase Center’s Above the Rim for a hands-on bridge-building experience. The young girls from Girls, Inc. of Alameda County had an opportunity to design, build and test their own bridge prototypes and learn the fundamentals of bridge construction from the Engineering Alliance and the UC Berkeley Steel Bridge Team.

This STEAM experience for the girls followed the first session in January, where they took a behind-the-scenes tour of the Golden Gate Bridge, learning about its design and construction from industry experts. The City Calls campaign, tipped off with the unveiling the Warriors’ new bridge-themed City Edition jerseys and court design earlier this year.