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On SGD's Failure in Practice: Characterizing and Overcoming Stalling

arXiv.org Machine Learning

Stochastic Gradient Descent (SGD) is widely used in machine learning problems to efficiently perform empirical risk minimization, yet, in practice, SGD is known to stall before reaching the actual minimizer of the empirical risk. SGD stalling has often been attributed to its sensitivity to the conditioning of the problem; however, as we demonstrate, SGD will stall even when applied to a simple linear regression problem with unity condition number for standard learning rates. Thus, in this work, we numerically demonstrate and mathematically argue that stalling is a crippling and generic limitation of SGD and its variants in practice. Once we have established the problem of stalling, we generalize an existing framework for hedging against its effects, which (1) deters SGD and its variants from stalling, (2) still provides convergence guarantees, and (3) makes SGD and its variants more practical methods for minimization.


Machine Learning in closed loop systems

#artificialintelligence

CRIXLabs (DBA Quantified Skin) is hosting a workshop on closed loop systems in machine learning. Jon Stenstrom et al (Co-Founder) will discuss data capture techniques to enable such a system and Shalini Ananda et al (Co-Founder) will discuss current tools that enable closed loop learning within our platform. We welcome those with machine learning experience and an interest in working with images and signal processing. Please do not hesitate to reach out to Shalini - shalini@quantifiedskin.com with any questions you may have.


Your Kids Will Be Raised By AI

#artificialintelligence

At school, adaptive learning platforms will identify specific modules of knowledge that a child needs in order to advance, providing the kind of personal education that previously only individual tutors could offer. Teachers currently use software to identify Web plagiarism, but in the near future, computers will grade papers and exams - not just multiple choice responses, but complex, prose responses as well. At dinner parties and in school parking lots, parents will debate whether or not humans teach better than algorithms. AI will also play an increasingly important role in keeping kids safe. Today'schild protection software relies on a brute force approach - blocking sites, monitoring keywords and allowing parents to covertly take screenshots of their children's online activity.


Why C Levels Need To Think About e-Learning And Artificial Intelligence

#artificialintelligence

I will dispense with any amenities and cut right to the chase. When it comes to corporate learning and training the numbers are truly staggering. Trust me, there's a lot more where this came from meaning there is no shortage of stats and research that speak to the benefits of e-Learning. In a piece last year for PC Magazine, Rob Marvin wrote something that of course struck a chord with me. I say of course because of me being the pop culture savant that I am.


Learning sign language could give you super vision

Daily Mail - Science & tech

Researchers have found that learning sign language can be beneficial for hearing adults too, giving them faster reaction times in their peripheral vision. Improved peripheral vision is useful in many sports and for driving, making you more alert to changes in your peripheral field of vision. The research also found that deaf adults have far better peripheral vision and reaction times than both hearing adults and hearing adults who use sign language. Researchers at the University of Sheffield have found that learning sign language can be beneficial for hearing adults too, giving them faster reaction times in their peripheral vision. The research, conducted at the University of Sheffield's Academic Unit of Opthalmology, found that adults learning a visual-spatial language such as British sign language (BSL) had a positive impact on their visual field response.


How do you model that?

#artificialintelligence

Attend Multilevel Modeling of Hierarchical and Longitudinal Data Using SAS and learn how to identify complex and dynamic patterns within your multilevel data. This advanced class provides a conceptual understanding of multilevel linear models (MLM) and multilevel generalized linear models (MGLM). Meet the Presenters Catherine Truxillo and Chris Daman discuss what you can expect to learn in this class. Attend a public course or enjoy the classroom experience right at your desktop, the choice is yours!


Deep dreaming of AI in education and using data to improve teaching

#artificialintelligence

Every year some 35,000 people from around 140 countries working in the education sector gather to experience and observe ideas, practices and technologies that allow educators and learners to fulfil their potential. This year, as to be expected, it did not disappoint, with some very exciting talks and lots of great new products and technologies. Where else can you listen to Heston Blumenthal discuss how food and cooking can unleash creativity in the classroom, and see Sir Tony Robinson share stories about his love of history and his personal quest for learning, not before enjoying a talk by Sir Ken Robinson about his views on the necessity for new approaches in the education system. Where else can you listen to Heston Blumenthal discuss how food and cooking can unleash creativity in the classroom? At this year's event, Microsoft vice-president of worldwide education said: 'We've got to make technology available, but to bring it all together we have to raise the bar for how we can drive innovation and transformation', a statement that we at Jisc fully support.


An interview with Monica Anderson -- Part 2

#artificialintelligence

Artificial General Intelligence (AGI) is an emerging field aiming at the building of "thinking machines"; that is, general-purpose systems with intelligence comparable to that of the human mind. What is currently labeled'artificial intelligence' is largely narrow automated knowledge work, lacking the flexibility and adaptability seen in animal intelligence. The pursuit of AGI begins at a foundational level, asking fundamental questions about models of cognition, knowledge acquisition, making choices through reason, thinking and conceiving the world in adaptive and intuitive ways. You emphasize the importance and value of "artificial understanding" of human language. What are the current "natural language processing" systems (Siri, Alexa, chat-bots, etc.) doing and how does this differ from what AGI is striving for w/regards to working with language? None of the language understanding systems go beyond identifying words correctly in context; this is a major step forward, but not enough.


Special report: Automation puts jobs in peril

USATODAY - Tech Top Stories

The patter of automated machinery fills the air inside wire-basket manufacturer Marlin Steel's bustling factory in a rugged industrial section of this city. Maxi Cifarelli, 25, of Baltimore, peers through safety goggles at a flat screen, her left knee bent and heel resting on her chair. Two years after earning a fine arts degree from Towson University with a specialty in interdisciplinary object design, she now spends her work days working with a personality-free machine with a name to match: a computer numerical control, or CNC, router. With automation poised to sweep through the economy, some fear that it will kill more jobs than it creates. But Cifarelli's experience is the opposite. She befriended automation, instead of fighting it, and she has a job because of it.


Website security: Spot a bot to stop a botnet

AITopics Original Links

One of the most significant threats faced by computer networks is from "bots." A bot is simply a program that runs on a computer without the owner's knowledge and carries out any of a number of tasks over the network and the wider internet. It can run the same tasks, such as sending emails or accessing a specific page on the internet, at a much higher rate than would be possible if a person were to carry out the task. A collection of bots in a network, used for malicious purposes, is a botnet and while they are often organized and run by a so-called botmaster there are bots that are available for hire for malicious and criminal activity. Bots might be illicitly installed on computers in the home, schools, businesses, government buildings and other installations.