Education
Interactive Robot Training for Non-Markov Tasks
Defining sound and complete specifications for robots using formal languages is challenging, while learning formal specifications directly from demonstrations can lead to over-constrained task policies. In this paper, we propose a Bayesian interactive robot training framework that allows the robot to learn from both demonstrations provided by a teacher, and that teacher's assessments of the robot's task executions. We also present an active learning approach -- inspired by uncertainty sampling -- to identify the task execution with the most uncertain degree of acceptability. We demonstrate that active learning within our framework identifies a teacher's intended task specification to a greater degree of similarity when compared with an approach that learns purely from demonstrations. Finally, we also conduct a user-study that demonstrates the efficacy of our active learning framework in learning a table-setting task from a human teacher.
Teaching a robot to do my job (and grimly cheering my obsolescence) Ellen Wengert
It is put to us on that first Monday morning as an exciting innovation which will streamline our processes and free up time for the important stuff. This happens in our morning "huddle cuddle", where at 9.15am on the dot our manager has us gather around in a loose circle and run through the day ahead – how many pieces of work there are to be processed, which queues will be prioritised, who is going to take lunch when. This is the kind of place where our team of nine refers to each other as family. The kind of place with an A4 printout stuck to the kitchenette fridge that says "if Britney Spears can get through 2007, you can get through today". The job is a data-processing role at a small member-owned health insurance fund.
Survey: Americans are not concerned about robots at work
You've seen the headlines about robots coming after your jobs, but a new report debunks the fears and finds Americans are less worried about automation in the workplace than it may seem. And it was those "ample fear-based, rhetoric-filled headlines" that prompted the report, Americans' Perceptions of the Future of Work, by the business process outsourcing provider Sykes. The survey of over 1,500 Americans across the US found that over two-thirds (67%) had a positive connotation with intelligent, automation-based technology. SEE: Artificial intelligence: A business leader's guide (free PDF) While that may be the case, demographics play a key role in Americans' perception of robots in the workplace, said Tara Chklovski, founder and CEO of Technovation, a global technology education nonprofit aimed at empowering girls in low-income communities. Technovation conducted its own survey in 2018 of 1,566 low-income families to get a sense of what people are feeling with respect to artificial intelligence and what their fears are.
How coronavirus turned the "dystopian joke" of FaceID masks into a reality
Even when taken simply as performance art rather than a potential solution, these designs can have a downside. Torin Monahan, a surveillance researcher at the University of North Carolina, says such projects risk leading people to believe that surveillance is inevitable and it's up to individuals to solve the problem. "These kinds of interventions tend to position surveillance as a universal threat to which individuals can respond and maybe should respond--but that misses how the affluent and white are positioned in a much more advantageous way than those who are marginalized and subject to police or state surveillance on a regular basis," he says. "I worry that by commercializing and aestheticizing surveillance in these ways, we aren't having a conversation about unequal vulnerabilities."
Learning to Continually Learn
Beaulieu, Shawn, Frati, Lapo, Miconi, Thomas, Lehman, Joel, Stanley, Kenneth O., Clune, Jeff, Cheney, Nick
Continual lifelong learning requires an agent or model to learn many sequentially ordered tasks, building on previous knowledge without catastrophically forgetting it. Much work has gone towards preventing the default tendency of machine learning models to catastrophically forget, yet virtually all such work involves manually-designed solutions to the problem. We instead advocate meta-learning a solution to catastrophic forgetting, allowing AI to learn to continually learn. Inspired by neuromodulatory processes in the brain, we propose A Neuromodulated Meta-Learning Algorithm (ANML). It differentiates through a sequential learning process to meta-learn an activation-gating function that enables context-dependent selective activation within a deep neural network. Specifically, a neuromodulatory (NM) neural network gates the forward pass of another (otherwise normal) neural network called the prediction learning network (PLN). The NM network also thus indirectly controls selective plasticity (i.e. the backward pass of) the PLN. ANML enables continual learning without catastrophic forgetting at scale: it produces state-of-the-art continual learning performance, sequentially learning as many as 600 classes (over 9,000 SGD updates).
On Emergent Communication in Competitive Multi-Agent Teams
Liang, Paul Pu, Chen, Jeffrey, Salakhutdinov, Ruslan, Morency, Louis-Philippe, Kottur, Satwik
Several recent works have found the emergence of grounded compositional language in the communication protocols developed by mostly cooperative multi-agent systems when learned end-to-end to maximize performance on a downstream task. However, human populations learn to solve complex tasks involving communicative behaviors not only in fully cooperative settings but also in scenarios where competition acts as an additional external pressure for improvement. In this work, we investigate whether competition for performance from an external, similar agent team could act as a social influence that encourages multi-agent populations to develop better communication protocols for improved performance, compositionality, and convergence speed. We start from Task & Talk, a previously proposed referential game between two cooperative agents as our testbed and extend it into Task, Talk & Compete, a game involving two competitive teams each consisting of two aforementioned cooperative agents. Using this new setting, we provide an empirical study demonstrating the impact of competitive influence on multi-agent teams. Our results show that an external competitive influence leads to improved accuracy and generalization, as well as faster emergence of communicative languages that are more informative and compositional.
Data Science:Data Mining & Natural Language Processing in R
Learn to carry out pre-processing, visualization and machine learning tasks such as: clustering, classification and regression in R. You will be able to mine insights from text data and Twitter to give yourself & your company a competitive edge. My name is Minerva Singh and I am an Oxford University MPhil (Geography and Environment) graduate. I recently finished a PhD at Cambridge University (Tropical Ecology and Conservation). I have several years of experience in analyzing real life data from different sources using data science related techniques and producing publications for international peer reviewed journals.
Robot uses AI to personalize teaching of autistic children
Researchers have developed a new personalized learning robot for autistic children that uses machine learning to adapt its lessons to each kid's changing needs. The University of Southern California team put a "socially assistive robot" called Kiwi in the homes of 17 autistic children and set the two-foot-tall, green-feathered robot to give each child personalized classes. Over the course of a month, the children played space-themed math games on a tablet device while Kiwi provided feedback and instruction, such as congratulating them on a correct answer or giving tips after a wrong one. As the lessons progressed, algorithms adjusted Kiwi's feedback and the difficulty of the games to the child's individual needs. By the end of the month, all of the children had improved their math skills, while 92% had also improved their social skills.
Projects in Machine Learning : Beginner To Professional
Online Courses Udemy - Projects in Machine Learning: Beginner To Professional, A complete guide to master machine learning concepts and create real world ML solutions 4.3 (419 ratings), Created by Eduonix Learning Solutions, Eduonix-Tech ., Samy Eduonix, English [Auto-generated] Preview this Udemy course -. GET COUPON CODE Description Update: This course has been updated to include 8 projects that will give you a real-world experience with different concepts of Machine Learning. Keep an eye out for more projects that will be added to this course in the future! If you've ever wanted Jetsons to be real, well we aren't that far off from a future like that. If you've ever chatted with automated robots, then you've definitely interacted with machine learning.
Mixed Strategies for Robust Optimization of Unknown Objectives
Sessa, Pier Giuseppe, Bogunovic, Ilija, Kamgarpour, Maryam, Krause, Andreas
We consider robust optimization problems, where the goal is to optimize an unknown objective function against the worst-case realization of an uncertain parameter. For this setting, we design a novel sample-efficient algorithm GP-MRO, which sequentially learns about the unknown objective from noisy point evaluations. GP-MRO seeks to discover a robust and randomized mixed strategy, that maximizes the worst-case expected objective value. To achieve this, it combines techniques from online learning with nonparametric confidence bounds from Gaussian processes. Our theoretical results characterize the number of samples required by GP-MRO to discover a robust near-optimal mixed strategy for different GP kernels of interest. We experimentally demonstrate the performance of our algorithm on synthetic datasets and on human-assisted trajectory planning tasks for autonomous vehicles. In our simulations, we show that robust deterministic strategies can be overly conservative, while the mixed strategies found by GP-MRO significantly improve the overall performance.