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Stochastic Convolutional Sparse Coding

arXiv.org Machine Learning

State-of-the-art methods for Convolutional Sparse Coding usually employ Fourier-domain solvers in order to speed up the convolution operators. However, this approach is not without shortcomings. For example, Fourier-domain representations implicitly assume circular boundary conditions and make it hard to fully exploit the sparsity of the problem as well as the small spatial support of the filters. In this work, we propose a novel stochastic spatial-domain solver, in which a randomized subsampling strategy is introduced during the learning sparse codes. Afterwards, we extend the proposed strategy in conjunction with online learning, scaling the CSC model up to very large sample sizes. In both cases, we show experimentally that the proposed subsampling strategy, with a reasonable selection of the subsampling rate, outperforms the state-of-the-art frequency-domain solvers in terms of execution time without losing the learning quality. Finally, we evaluate the effectiveness of the over-complete dictionary learned from large-scale datasets, which demonstrates an improved sparse representation of the natural images on account of more abundant learned image features.


Ready to work with a smart robot? Some Dayton workers already are

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The rapid growth of artificial intelligence and automation presents threats -- and opportunities -- for workers and businesses in the Miami Valley. More than 31,600 people in the Dayton metro area work in the five largest occupations at high risk of automation, according to data the Brookings Institution prepared exclusively for the Dayton Daily News. Those jobs include food preparation, waiters, stock clerks, tractor-trailer truck drivers and accounting clerks. But about 34,600 people in the region that includes Montgomery, Greene and Miami counties work in the largest low-risk occupations. Those include registered nurses, freight and stock movers, janitors, customer service representatives and general managers, according to the Brookings data.


10 things we should all demand from Big Tech right now

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A woman's job application is rejected because of a recruiting algorithm that favors men's résumés. A girl dies by suicide after graphic images of self-harm are pushed up on her feed by social media algorithms. A black teen steals something and gets rated high-risk for committing future crime by an algorithm used in courtroom sentencing, while a white man steals something of similar value and gets rated low-risk. In recent years, advances in computer science have yielded algorithms so powerful that their creators have presented them as tools that can help us make decisions more efficiently and impartially. But the idea that algorithms are unbiased is a fantasy; in fact, they still end up reflecting human biases.


How AI Is Transforming The Education Industry

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Certainly, Artificial Intelligence is transforming the education industry in the world. The growth of AI is expected to grow by 47.5% from 2017 to 2021 in the world's marketplace. However, this is good news for teachers, as AI can be a helpful colleague to the teacher. We already primarily use tools comprising as Siri and Amazon's Alexa and are just initiating to see the potentials of AI in the education sector. Hence, there are several AI applications developed for educational purposes such as AI mentors for learners, further development of AI-enabled smart content and a new way of personal development for educators via virtual global conferences.


A Summer Camp With a Long Plan: Keeping Bias Out of Artificial Intelligence

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Anaya Bussey didn't know much about "artificial intelligence" when she arrived at a camp at Princeton University earlier this summer other than that "it was definitely blowing up." But after just three weeks here she and other students--all incoming high school juniors--teamed up to use the technology to help diagnose melanoma by looking at skin lesions. Bussey, 15, who is from the Bronx borough in New York City, has been interested in computer science since she was in elementary school. But there have been times when she's been one of only a handful of girls--or black students--in a computer class or program. That wasn't the case at the Princeton summer camp, run by AI4ALL, a two-year-old nonprofit that seeks to increase diversity and inclusion in AI education, research, and policy.


How to Build a Career in Artificial Intelligence and Machine Learning?

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"Artificial intelligence will reach human levels by around 2029. Follow that out further to, say, 2045, we will have multiplied the intelligence, the human biological machine intelligence of our civilization a billion-fold." Machine learning (ML) and artificial intelligence (AI) are ruling the digital world today. These technologies have the ability to completely transform the way a business operates. With the increasing adoption and business applications of AI and ML, many IT professionals are choosing AI and ML as their career.


This Bengaluru School Uses Humanoid Robots To Teach Students

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Artificial intelligence is ubiquitous these days and is helping human beings in every sphere of life. India is slowly progressing in the field of artificial intelligence and education is the latest sector which has seen the rise of AI. Continuing the trend, a Bengaluru-based school has deployed humanoid robots to deliver lectures. Indus International School in Bengaluru has introduced three humanoid robots for teaching students of class 7,8 and 9 with the ultimate aim of replacing human teachers altogether. These human-looking robots are capable of two-way interaction i.e. they can answer queries of students and respond to their answers similar to how voice-based assistants work.


7 Simple Tips to Help You Get Started With Artificial Intelligence in Digital Marketing

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Leading brands around the globe are all using AI for digital marketing. As a result, marketing AI is now a flourishing market, with an ever-increasing number of use cases. Today, we share seven essential steps that every marketer needs to know before starting their AI journey. Artificial Intelligence (AI) is rapidly transforming every aspect of how we work. As data volumes steadily rise, AI allows digital marketers to fully utilize the potential of available data.


Learning to Work with Intelligent Machines

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The rush of intelligent machines and sophisticated analytics into many aspects of work means that trainees are losing opportunities to acquire skills through on-the-job learning (OJL). In medicine, policing, and other fields, people are finding rule-breaking ways to acquire needed expertise out of the limelight. This "shadow learning" is tolerated for the results it produces, but it can exact a personal and an organizational toll. In response, organizations should carefully uncover and study shadow learning; adapt practices that develop organizational, technological, and work designs that enhance OJL; and make intelligent machines part of the solution. It's 6:30 in the morning, and Kristen is wheeling her prostate patient into the OR. Today she's hoping to do some of the procedure's delicate, nerve-sparing dissection herself. The attending physician is by her side, and their four hands are mostly in the patient, with Kristen leading the way under his watchful guidance. The work goes smoothly, the attending backs away, and Kristen closes the patient by 8:15, with a junior resident looking over her shoulder.


Bringing AI Skills to the Classroom

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Whether you want to build a course, work on a student project, conduct research, get Dataiku on student and faculty computers, or offer a Dataiku specialized certification, we'll set you up with the right Dataiku license.