Africa
12 Innovations That Will Change Health Care and Medicine in the 2020s
Pocket-size ultrasound devices that cost 50 times less than the machines in hospitals (and connect to your phone). These are just some of the innovations now transforming medicine at a remarkable pace. No one can predict the future, but it can at least be glimpsed in the dozen inventions and concepts below. Like the people behind them, they stand at the vanguard of health care. Neither exhaustive nor exclusive, the list is, rather, representative of the recasting of public health and medical science likely to come in the 2020s.
Tensor Q-Rank: A New Data Dependent Tensor Rank
Recently, the \textit{Tensor Nuclear Norm~(TNN)} regularization based on t-SVD has been widely used in various low tubal-rank tensor recovery tasks. However, these models usually require smooth change of data along the third dimension to ensure their low rank structures. In this paper, we propose a new definition of tensor rank named \textit{tensor Q-rank} by a column orthonormal matrix $\mathbf{Q}$, and further make $\mathbf{Q}$ data-dependent. With $\mathbf{Q}$ satisfying our orthogonal proximal constraint, the data tensor may have a more significant low tensor Q-rank structure than that of low tubal-rank structure. We also provide a corresponding envelope of our rank function and apply it to the low rank tensor completion problem. Then we give an effective algorithm and briefly analyze why our method works better than TNN based methods in the case of complex data with low sampling rate. Finally, experimental results on real-world datasets demonstrate the superiority of our proposed model in the tensor completion problem.
PREMA: Principled Tensor Data Recovery from Multiple Aggregated Views
Almutairi, Faisal M., Kanatsoulis, Charilaos I., Sidiropoulos, Nicholas D.
Multidimensional data have become ubiquitous and are frequently involved in situations where the information is aggregated over multiple data atoms. The aggregation can be over time or other features, such as geographical location or group affiliation. We often have access to multiple aggregated views of the same data, each aggregated in one or more dimensions, especially when data are collected or measured by different agencies. However, data mining and machine learning models require detailed data for personalized analysis and prediction. Thus, data disaggregation algorithms are becoming increasingly important in various domains. The goal of this paper is to reconstruct finer-scale data from multiple coarse views, aggregated over different (subsets of) dimensions. The proposed method, called PREMA, leverages low-rank tensor factorization tools to provide recovery guarantees under certain conditions. PREMA is flexible in the sense that it can perform disaggregation on data that have missing entries, i.e., partially observed. The proposed method considers challenging scenarios: i) the available views of the data are aggregated in two dimensions, i.e., double aggregation, and ii) the aggregation patterns are unknown. Experiments on real data from different domains, i.e., sales data from retail companies, crime counts, and weather observations, are presented to showcase the effectiveness of PREMA.
Artificial intelligence has a gender bias problem โ just ask Siri
Suggest to Samsung's Virtual Personal Assistant Bixby "Let's talk dirty," and the female voice will respond with a honeyed accent, "I don't want to end up on Santa's naughty list." Ask the same question to the program's male voice and it replies "I've read that soil erosion is a real dirt problem." In South Africa, where I live and conduct my research into gender biases in artificial intelligence, Samsung now offers Bixby in various voices depending on which language you choose. The voices of Julia, Lisa and Stephanie are coquettish and eager. John is clever and straightforward.
AI For Marketers: An Introduction and Primer, Second Edition
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Machine Learning Engineer in London - WeFarm
We are a unique social enterprise providing a vital service for the world's 500 million smallholder farmers who live and work without internet access. This pioneering, peer-to-peer platform enables farmers to access crowdsourced information by SMS, creating social impact on a groundbreaking scale and generating a game-changing data feed through the use of cutting edge AI techniques. In just one year WeFarm has scaled to more than 72,000 farmers across Kenya, Uganda and Peru, has facilitated over 11.5 million interactions and featured in the FT, Forbes, Wired.co.uk, as well as winning awards from Google's Impact Challenge, The Venture and the European Commission's Ideas From Europe. Would you like to change the world and create social impact on a global scale? Do you want every LOC you write to save livelihoods?
Machines on the trail, beware human fraudsters!
The Institute of Internal Auditors (IIA) recently hosted a session on Artificial Intelligence (AI) in fraud detection. Participants of the session listened to Hatem Elsafty, partner at Mazars-Qatar. Marwan Arab AI & Machine Learning Architect with Mazars presented case studies with the'Artificial Intelligence Fraud Fight Platform (AIFF)' developed by Mazars with Pandata, provides predictive and forensic intelligence solutions for fraud detection. During the session, Elsafty explained the concept of fraud, artificial intelligence, and machine learning using real-life examples and scenarios. "We are living in an era of advanced technologies that changed the way we do business. Artificial Intelligence (AI) and the use of Big Data are two of the leading technologies that provided useful business applications to automate and significantly support the reduction of fraud and corruption," said Elsafty.
Elephants Under Attack Have An Unlikely Ally: Artificial Intelligence
There are two kinds of elephants in Africa: the forest elephant and the savanna elephant (above), photographed this past spring in Liwonde National Park in Malawi. The Great Elephant Census found that Africa's savanna elephant population decreased by about a third in the seven years between 2007 and 2014. There are two kinds of elephants in Africa: the forest elephant and the savanna elephant (above), photographed this past spring in Liwonde National Park in Malawi. The Great Elephant Census found that Africa's savanna elephant population decreased by about a third in the seven years between 2007 and 2014. A few years ago, Paul Allen, the co-founder of Microsoft, published the results of something called the Great Elephant Census, which counted all the savanna elephants in Africa. What it found rocked the conservation world: In the seven years between 2007 and 2014, Africa's savanna elephant population decreased by about a third and was on track to disappear completely from some African countries in as few as 10 years. To reverse that trend, researchers landed on a technology that is rewriting the rules for everything from our household appliances to our cars: artificial intelligence. AI's ability to find patterns in enormous volumes of information is demystifying not just elephant behavior but human behavior -- specifically poacher behavior -- too.
Video game review: 'Call of Duty: Modern Warfare' plays out as a successful mission
"Call of Duty: Modern Warfare" accomplishes its mission on multiple fronts with a compelling and dramatic single-player story campaign. Firstly, the video game (out Oct. 25 for PlayStation 4, Xbox One and PCs, rated Mature for ages 17-up) lives up to its namesake, "Call of Duty 4: Modern Warfare," the 2007 game that helped launch the video game franchise towards its stratospheric station as a perennial multibillion-dollar seller. The non-stop action spans the globe and keeps the player guessing where the story is headed. And, the story campaign alone suggests "Call of Duty" will continue the series' successful run โ it's been the top-selling game each of the last ten years and topped $1 billion in sales annually for the last 15 years. This one has a special coop mode and a 2-vs.-2
Elephants Under Attack Have An Unlikely Ally: Artificial Intelligence
A few years ago, Paul Allen, the co-founder of Microsoft, published the results of something called the Great Elephant Census, which counted all the savanna elephants in Africa. What it found rocked the conservation world: In the seven years between 2007 and 2014, Africa's savanna elephant population decreased by about a third and was on track to disappear completely from some African countries in as few as 10 years. To reverse that trend, researchers landed on a technology that is rewriting the rules for everything from our household appliances to our cars: artificial intelligence. AI's ability to find patterns in enormous volumes of information is demystifying not just elephant behavior but human behavior -- specifically poacher behavior -- too. "AI can process huge amounts of information to tell us where the elephants are, how many there are," said Cornell University researcher Peter Wrege. "And ideally tell us what they are doing."