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Sharp bounds on the price of bandit feedback for several models of mistake-bounded online learning

arXiv.org Artificial Intelligence

We determine sharp bounds on the price of bandit feedback for several variants of the mistake-bound model. The first part of the paper presents bounds on the $r$-input weak reinforcement model and the $r$-input delayed, ambiguous reinforcement model. In both models, the adversary gives $r$ inputs in each round and only indicates a correct answer if all $r$ guesses are correct. The only difference between the two models is that in the delayed, ambiguous model, the learner must answer each input before receiving the next input of the round, while the learner receives all $r$ inputs at once in the weak reinforcement model. In the second part of the paper, we introduce models for online learning with permutation patterns, in which a learner attempts to learn a permutation from a set of permutations by guessing statistics related to sub-permutations. For these permutation models, we prove sharp bounds on the price of bandit feedback.


Co-Design and implementation of an open-source 3D printed robot

arXiv.org Artificial Intelligence

During the 2017-18 academic year we carried out a series of coding activities, lasting about 3 months, in a third of the Giulia Falletti primary school in Barolo in Turin (Gena et a., 2020). These activities aimed to teach students not only the basics of programming, but also to introduce a new language and a new way of thinking and solving problems: computational thinking. The class consisted of 25 pupils: 14 males and 11 females, which we then operationally divided into two working groups (13 + 12) to make coding lessons more manageable and provide better childcare. The lessons lasted one hour and were conducted, in the presence of one of the teachers, by a computer teacher assisted by a student / facilitator. At the end of the three months of this positive experience, we realized that having an educational robot that can perform the same kind of actions that virtual robots do, like those of code.org, is very useful for children, especially to help them to solve orientation problems. Therefore, since no commercial robot had the characteristics we wanted, we decided to create an educational robot from scratch, equipped with social, interactive and emotional skills, able to involve children and establish an emotional bond with them in order to increase their learning and involvement. We decided from the beginning to design the robot as an open source project, made at a low cost, proposing a kit that can be easily reproduced and improved by anyone who wishes.


Continual Learning for Steganalysis

arXiv.org Artificial Intelligence

To detect the existing steganographic algorithms, recent steganalysis methods usually train a Convolutional Neural Network (CNN) model on the dataset consisting of corresponding paired cover/stego-images. However, it is inefficient and impractical for those steganalysis tools to completely retrain the CNN model to make it effective against both the existing steganographic algorithms and a new emerging steganographic algorithm. Thus, existing steganalysis models usually lack dynamic extensibility for new steganographic algorithms, which limits their application in real-world scenarios. To address this issue, we propose an accurate parameter importance estimation (APIE) based-continual learning scheme for steganalysis. In this scheme, when a steganalysis model is trained on the new image dataset generated by the new steganographic algorithm, its network parameters are effectively and efficiently updated with sufficient consideration of their importance evaluated in the previous training process. This approach can guide the steganalysis model to learn the patterns of the new steganographic algorithm without significantly degrading the detectability against the previous steganographic algorithms. Experimental results demonstrate the proposed scheme has promising extensibility for new emerging steganographic algorithms.


Primary MS in Machine Learning - Applied Study - Machine Learning - CMU - Carnegie Mellon University

#artificialintelligence

We welcome applicants from a variety of backgrounds and an undergraduate degree in Computer Science is not required. Incoming students must have a strong background in computer science, including a solid understanding of complexity theory and good programming skills, as well as a good background in mathematics. Specifically, the first-year courses assume at least one year of college-level probability and statistics, as well as matrix algebra and multivariate calculus. For our introductory ML course, there's a self-assessment test [PDF] which will give you some idea about the background we expect students to have (for the MS you're looking at the "modest requirements"). Generally, you need to have some reasonable programming skills, with experience in Matlab/R/scipy-numpy especially helpful, and Java and Python being more useful than C, and a solid math background, especially in probability/statistics, linear algebra, and matrix and tensor calculus.


Information As An Economic Power

International Business Times

There is a whole lot of talk nowadays about power, who has it, who wants it, who should have it. What you do not hear a lot about is what exactly power is and where it really comes from. We believe that everybody in a free and capitalistic democracy should have it -- and we believe that one of the surest sources of it is knowledge. Those who possess crucial information and the knowhow to put that information to use effectively will be heads and shoulders above those who do not -- and not because they are better or more deserving but simply because they have that knowledge. The fact is that knowledge is and always has been the ultimate equalizer or advantage if you had it and others did not, and the ultimate granter of access to all that you could be. It's why monks slaved by candlelight to find and preserve the words of wisdom from the Greek and Roman empires almost lost forever during the Dark Ages by rewriting every word by hand. It's why the invention of the printing press, radio and TV and, ultimately, the internet on which you are reading this article changed the world. Conversely, it's the reason why for centuries those who wanted to keep people down and out of power have tried to keep knowledge out of the hands of those they wanted to oppress. In the United States, for instance, during the era of slavery, slave codes actually made it illegal to teach slaves to read or write. And in current day Afghanistan, women are not even allowed to go to school.


Embracing AI in the Classroom

#artificialintelligence

Over 3 days in a face-to-face professional development, a team of educators and researchers (including myself) led an AI capacity-building workshop and facilitated the development of lessons for students that involved the use or creation of AI technologies. In a previous article about AI, I mentioned how most schools will be caught by surprise by how advanced AI has become and what it means for the classroom. This school will not only be ready, but will be co-facilitating the use of AI in lessons and will encourage students to build and use AI. The school is called the Darunsikkhalai School for Innovative Learning (Bangkok) and from my experience and observation is the most innovative school on the planet. Sounds like a bold statement, but let me explain.


AI in healthcare education: Is it ready to teach the future?

#artificialintelligence

But despite this commonplace portrayal, where technology mimics all aspects of human consciousness (sometimes even superseding human intellect), contemporary AI, and what can be feasibly developed in the near future, is a far cry from this Hollywood depiction. Even though the promise of artificial general intelligence creates the hype that drives further development of machine intelligence, right now AI can only replicate limited human tasks. Think of the last time you had a question and "Googled it". Google performed a massive search in less than a second, and was likely able to identify the key resources to answer your query. Machine learning models, currently the most influential AI development approach, can replicate these limited, but exceptionally executed, tasks with unwavering consistency.


Machine learning roadmap: 5 Steps to a successful career

#artificialintelligence

Find out where you should start your machine learning journey, what kinds of projects you can work on along the way, and how you can succeed in this complex field. The data era has arrived, and if you didn't prepare enough for it, don't worry we can still help you get on board. Money may have made the world go round, but all that's necessary is data and information in contemporary times. Harnessing these two basic concepts and analyzing and using such data will help us to truly collect and analyze valuable data that will keep us ahead of the competition. Analytics in business, tech, and finance is a must.


SA to establish Artificial Intelligence Institute

#artificialintelligence

Minister of Communications and Digital Technologies Khumbudzo Ntshavheni said the AI Institute is being established in partnership with institutions of higher learning, in particular the Johannesburg Business School of the University of Johannesburg and the Tshwane University of Technology, which are co-founder institutions together with the Department of Communications and Digital Technologies. "It is essential that we invest significantly to provide our youth with access to modern training, skill sets and formal education. To achieve this, our Department of Basic Education has introduced robotics and coding as school subjects in primary and high schools. "At present, learners in over a 1,000 schools are designing and producing robots both for gaming and to complete tasks the learners find tedious for human completion. "Next year, learners in these and additional schools that will join this category will compete in a National Robotics Development Challenge," the Minister said on Thursday during the G20 Digital Economy Ministers Meeting in Bali, Indonesia.


NeurIPS'22 Cross-Domain MetaDL competition: Design and baseline results

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We present the design and baseline results for a new challenge in the ChaLearn meta-learning series, accepted at NeurIPS'22, focusing on "cross-domain" meta-learning. Meta-learning aims to leverage experience gained from previous tasks to solve new tasks efficiently (i.e., with better performance, little training data, and/or modest computational resources). While previous challenges in the series focused on within-domain few-shot learning problems, with the aim of learning efficiently N-way k-shot tasks (i.e., N class classification problems with k training examples), this competition challenges the participants to solve "any-way" and "any-shot" problems drawn from various domains (healthcare, ecology, biology, manufacturing, and others), chosen for their humanitarian and societal impact. To that end, we created Meta-Album, a meta-dataset of 40 image classification datasets from 10 domains, from which we carve out tasks with any number of "ways" (within the range 2-20) and any number of "shots" (within the range 1-20). The competition is with code submission, fully blind-tested on the CodaLab challenge platform.