Unknown to many AI’s are amnesiacs, they forget almost everything they’re taught, but now a new human like memory system could be about to take AI to the next level and make them much, much smarter.
When researchers decide to train their latest and greatest artificial intelligence (AI) systems there’s one big, fundamental flaw they have to deal with – AI’s, by nature – and design – are amnesiacs, that is to say they have great difficulty in retaining knowledge between tasks. It’s the equivalent of trying to train someone something new when they’re always forgetting stuff. So as you can imagine if you’re trying to teach an AI something new it can get quite frustrating, there’s even a special term for it – “Catastrophic forgetting.” Catchy.
To illustrate the problem, the DeepMind team got their AI to play a series of old Atari games, with the goal of getting the highest score. The control AI was an AI with no special new memory augmentation, and it performed as well as it could, given the fact it was an amnesiac – slow, low level skill increases that were gained and lost over and over again. As the AI learnt each new game, it essentially overwrote its old skills with new ones, making its progress slow and cumbersome.
With, and without EWC
It is, of course, possible to build a giant neural network that never gets filled up, and that always has space to assign new memories and experiences to fresh, previously unused “synapses,” but again that too creates its own problems because the system would quickly become bloated.
So let’s introduce the new DeepMind approach – “Elastic Weight Consolidation,” or EWC for short. Using EWC the team could assign what they call “weighted projections” to their new system’s synapses – making them more, or less, likely to be over written depending on the situation in the future. By assigning each synapse a different level of protection the team could then let the system learn new skills within the same network, while only slightly altering the systems pre-existing structure, or memories. The result was that the new approach let the system retain its old skills without ballooning the size of that network to the point of uselessness.
The team then gave the new EWC system the same task as the older AI – to learn how to play a series of Atari Games and maximise its score. But this time it wasn’t an amnesiac and didn’t loose the memory, or experiences, of its previous attempts and as a consequence it learnt much, much faster.
Suffice to say, now that AI research is reaching a point where AI’s can build, and retain memories, we’ll see yet another acceleration in their evolution… and bearing in mind that they’re already evolving at a crazy rate that’s going to be something to behold. That said though, as we get closer to solving the riddle of our own human conciousness, then maybe the next big news will be that it’s gained conciousness.
Matthew Griffin, described as “The Adviser behind the Advisers” and a “Young Kurzweil,” is the founder and CEO of the World Futures Forum and the 311 Institute, a global Futures and Deep Futures consultancy working between the dates of 2020 to 2070, and is an award winning futurist, and author of “Codex of the Future” series.
Regularly featured in the global media, including AP, BBC, Bloomberg, CNBC, Discovery, RT, Viacom, and WIRED, Matthew’s ability to identify, track, and explain the impacts of hundreds of revolutionary emerging technologies on global culture, industry and society, is unparalleled. Recognised for the past six years as one of the world’s foremost futurists, innovation and strategy experts Matthew is an international speaker who helps governments, investors, multi-nationals and regulators around the world envision, build and lead an inclusive, sustainable future.
A rare talent Matthew’s recent work includes mentoring Lunar XPrize teams, re-envisioning global education and training with the G20, and helping the world’s largest organisations envision and ideate the future of their products and services, industries, and countries.
Matthew's clients include three Prime Ministers and several governments, including the G7, Accenture, Aon, Bain & Co, BCG, Credit Suisse, Dell EMC, Dentons, Deloitte, E&Y, GEMS, Huawei, JPMorgan Chase, KPMG, Lego, McKinsey, PWC, Qualcomm, SAP, Samsung, Sopra Steria, T-Mobile, and many more.
FANATICALFUTURIST PODCAST! Hear about ALL the latest futures news and breakthroughs!SUBSCRIBE
1000's of articles about the exponential future, 1000's of pages of insights, 1000's of videos, and 100's of exponential technologies: Get The Email from 311, your no-nonsense briefing on all the biggest stories in exponential technology and science.
This research is really amazing. Thanks for the post.