Education
It's Not Just Robots: Skilled Jobs Are Going to "Meatware" -- Backchannel
Harry K. sits at his desk in Vancouver, Canada, scanning sepia-tinted swirls, loops and blobs on his computer screen. Every second or so, he jabs at his mouse and adds a fluorescent dot to the image. After a minute, a new image pops up in front of him. Harry is tagging images of cells removed from breast cancers. It's a painstaking job but not a difficult one, he says: "It's like playing Etch A Sketch or a video game where you color in certain dots." Harry found the gig on Crowdflower, a crowdworking platform. Usually that cell-tagging task would be the job of pathologists, who typically start their careers with annual salaries of around 200,000 -- an hourly wage of about 80. Harry, on the other hand, earns just four cents for annotating a batch of five images, which takes him between two to eight minutes. His hourly wage is about 60 cents. Granted, Harry can't perform most of the tasks in a pathologist's repertoire.
Learning Analytics
Education for years has been one model that fits for all. A fixed curriculum developed based on experience is delivered to a group of students with the hope of it getting across to all the students with the same effectiveness. Then each student is graded based on the basis of his understanding of that curriculum. Now imagine a classroom where its not just the student that is learning about the world but where the classroom is also learning about the student. Each day is a new learning experience for both, the classroom and the student.
Comparison of Several Sparse Recovery Methods for Low Rank Matrices with Random Samples
Esmaeili, Ashkan, Marvasti, Farokh
In this paper, we will investigate the efficacy of IMAT (Iterative Method of Adaptive Thresholding) in recovering the sparse signal (parameters) for linear models with missing data. Sparse recovery rises in compressed sensing and machine learning problems and has various applications necessitating viable reconstruction methods specifically when we work with big data. This paper will focus on comparing the power of IMAT in reconstruction of the desired sparse signal with LASSO. Additionally, we will assume the model has random missing information. Missing data has been recently of interest in big data and machine learning problems since they appear in many cases including but not limited to medical imaging datasets, hospital datasets, and massive MIMO. The dominance of IMAT over the well-known LASSO will be taken into account in different scenarios. Simulations and numerical results are also provided to verify the arguments.
Design Patterns for Recommendation Systems – Everyone Wants a Pony
Ted Dunning (Chief Application Architect at MapR) and Ellen Friedman have written a new O'Reilly Media book on "Practical Machine Learning – Innovations in Recommendation" (released in January 2014). This book examines one of the most interesting, fun, and powerful data science applications in the big data universe: recommendation systems. For me, this was one of the most interesting applications of data mining that immediately captured my imagination after I embarked on the journey to data science (drifting away from my astrophysics roots) about a dozen years ago. It is also one of the most common use cases that are taught in data science MOOCs and other analytics training courses. I believe that the love affair with recommender systems can be partly attributed to two things.
Where do I start with learning machine learning math? • /r/MachineLearning
Know different statistical distributions, eigen vectors/values, matrix transformations, summations of 3 indices, correlation measures, and network analysis (nearest neighbors and jaccard similarity), and hierarchical clustering . If you use Python I recommend sklearn, lots of docs . PyData on YouTube has really good tutorials for using this. Also, representing the data and visualizing it is a really important part. Bokeh is pretty cool too but there's less docs that use it .
Researchers Want To Teach Computers Magic Tricks
These digital architectures could also create programs to categorize existing magic tricks and maybe even find new ones, the researchers argue. Magic relies upon deceptions like misdirection (the audience is focused on one thing while the magician performs another action) or change blindness (when major aspects of a scene or image are altered but the viewer failed to notice). So far, no one has created the kind of database that would be necessary to create a sophisticated magic-minded AI. But any such program would need data both about magic tricks--how they are performed, what techniques are used--and about the psychology of the viewer.
Why Are We All (Including Our Leaders) Ignoring the Big Problem?
These are the things that the world's biggest thinkers are thinking about right now. It's frightening how little everyone else is thinking about it. I recently wrote a piece for CNBC.com about "micro-generation" gaps. It describes the Tower of Babel at work that results from the rapid changes in communications apps and software. Keeping up with the latest SnapChat, Venmo and Bumble is driving us insane.
Mathematicians are chronically lost and confused (and that's how it's supposed to be) • Jeremy Kun
A large part of my audience over at Math Programming are industry software engineers who are discovering two things about mathematics: it's really hard and it opens the door to a world of new ideas. In that way it's a lot like learning to read. Once you're mildly fluent you can read books, use the ideas to solve problems, and maybe even write an original piece of your own. Many people who are in this position, trying to learn mathematics on their own, have roughly two approaches. The first is to learn only the things that you need for the applications you're interested in.
Using computers to better understand art
The diagram is actually a computer program, so once the user designs the workflow, they can simply click a button to conduct the analysis. WAIVS includes not just discrete tonal analysis but other image-analysis algorithms, including the latest computer vision and artistic style algorithms. Recent work by Leon Gatys and others at the University of Tübingen, Germany, has demonstrated the use of deep learning techniques and technology to create images in the style of the great masters like Van Gogh and Picasso. The specific deep learning approach, called convolutional neural networks, learns to separate the content of a painting from its style. The content of a painting consists of objects, shapes and their arrangements but usually does not depend upon the use of colors, textures and other aspects of artistic style.