Oceania
MIT researchers show how 'Dr. Spot' could help diagnose COVID-19
Boston Dynamics' Spot robots have been used in many creative ways, from surveying a Ford plant in Michigan to herding sheep in New Zealand. Earlier this year, the tech company announced Spot was chipping in to help coronavirus patients -- now, we're seeing the fruits of that work. Boston Dynamics and MIT researchers say they've collaborated to create "Dr. Spot," a robot that can measure a patient's vital signs without doctor-to-patient contact. Spot robots are four-legged and designed to nimbly navigate areas wheeled robots cannot, either autonomously or via remote control.
Press Releases - Stay Up to Date with Endosoft
EndoSoft is pleased to announce that EndoVault 3.2.1.0 All providers using the platform will also have the National Authentication Service for Health (NASH) certificate of security and be on the federated provider directory service, consisting of multiple provider directories in Australia to send secure messages. Argus, the only AI decision support technology that assists clinicians in the detection and sizing of polyps during colonoscopy procedures, has announced a 3-month free trial of their solution. This free trial offers a unique chance to compare detection rates and sizing with and without the assistance of AI. Canada Health Infoway (Infoway) and EndoSoft LLC (EndoSoft) announced today that the EndoVault v3.x solution has achieved Infoway certification under the 2017 Edition of pre-implementation certification requirements.
Where Automation Is Being Used In the Digital Workplace
It's clear many enterprises are turning to artificial intelligence to increase productivity and meet business goals. What's less clear is where and how exactly it is being used in the workplace. One recent global study took a look at how IT departments are evolving in the current health crisis to maintain business continuity and meet the needs of customers. The Evolution of IT report from Logic Monitor, a Santa Barbara, Calif.-based IT performance monitoring company, analyzed survey responses from 500 IT decision-makers from North America, the United Kingdom, Australia and New Zealand during the COVID-19 pandemic. The results showed many organizations are turning to AI and automation to address the problems created by the closure of physical offices and the rise of remote work.
Automatic Generation of Chatbots for Conversational Web Browsing
Chittรฒ, Pietro, Baez, Marcos, Daniel, Florian, Benatallah, Boualem
In this paper, we describe the foundations for generating a chatbot out of a website equipped with simple, bot-specific HTML annotations. The approach is part of what we call conversational web browsing, i.e., a dialog-based, natural language interaction with websites. The goal is to enable users to use content and functionality accessible through rendered UIs by "talking to websites" instead of by operating the graphical UI using keyboard and mouse. The chatbot mediates between the user and the website, operates its graphical UI on behalf of the user, and informs the user about the state of interaction. We describe the conceptual vocabulary and annotation format, the supporting conversational middleware and techniques, and the implementation of a demo able to deliver conversational web browsing experiences through Amazon Alexa.
A new role for circuit expansion for learning in neural networks
Steinberg, Julia, Advani, Madhu, Sompolinsky, Haim
Many sensory pathways in the brain rely on sparsely active populations of neurons downstream from the input stimuli. The biological reason for the occurrence of expanded structure in the brain is unclear, but may be because expansion can increase the expressive power of a neural network. In this work, we show that expanding a neural network can improve its generalization performance even in cases in which the expanded structure is pruned after the learning period. To study this setting we use a teacher-student framework where a perceptron teacher network generates labels which are corrupted with small amounts of noise. We then train a student network that is structurally matched to the teacher and can achieve optimal accuracy if given the teacher's synaptic weights. We find that sparse expansion of the input of a student perceptron network both increases its capacity and improves the generalization performance of the network when learning a noisy rule from a teacher perceptron when these expansions are pruned after learning. We find similar behavior when the expanded units are stochastic and uncorrelated with the input and analyze this network in the mean field limit. We show by solving the mean field equations that the generalization error of the stochastic expanded student network continues to drop as the size of the network increases. The improvement in generalization performance occurs despite the increased complexity of the student network relative to the teacher it is trying to learn. We show that this effect is closely related to the addition of slack variables in artificial neural networks and suggest possible implications for artificial and biological neural networks.
On the Approximation Lower Bound for Neural Nets with Random Weights
Sonoda, Sho, Li, Ming, Cao, Feilong, Huang, Changqin, Wang, Yu Guang
A random net is a shallow neural network where the hidden layer is frozen with random assignment and the output layer is trained by convex optimization. Using random weights for a hidden layer is an effective method to avoid the inevitable non-convexity in standard gradient descent learning. It has recently been adopted in the study of deep learning theory. Here, we investigate the expressive power of random nets. We show that, despite the well-known fact that a shallow neural network is a universal approximator, a random net cannot achieve zero approximation error even for smooth functions. In particular, we prove that for a class of smooth functions, if the proposal distribution is compactly supported, then a lower bound is positive. Based on the ridgelet analysis and harmonic analysis for neural networks, the proof uses the Plancherel theorem and an estimate for the truncated tail of the parameter distribution. We corroborate our theoretical results with various simulation studies, and generally two main take-home messages are offered: (i) Not any distribution for selecting random weights is feasible to build a universal approximator; (ii) A suitable assignment of random weights exists but to some degree is associated with the complexity of the target function.
Trust and Medical AI: The challenges we face and the expertise needed to overcome them
Quinn, Thomas P., Senadeera, Manisha, Jacobs, Stephan, Coghlan, Simon, Le, Vuong
Artificial intelligence (AI) is increasingly of tremendous interest in the medical field. However, failures of medical AI could have serious consequences for both clinical outcomes and the patient experience. These consequences could erode public trust in AI, which could in turn undermine trust in our healthcare institutions. This article makes two contributions. First, it describes the major conceptual, technical, and humanistic challenges in medical AI. Second, it proposes a solution that hinges on the education and accreditation of new expert groups who specialize in the development, verification, and operation of medical AI technologies. These groups will be required to maintain trust in our healthcare institutions.
Inductive logic programming at 30: a new introduction
Cropper, Andrew, Dumanฤiฤ, Sebastijan
Inductive logic programming (ILP) is a form of machine learning. The goal of ILP is to induce a hypothesis (a set of logical rules) that generalises given training examples. In contrast to most forms of machine learning, ILP can learn human-readable hypotheses from small amounts of data. As ILP approaches 30, we provide a new introduction to the field. We introduce the necessary logical notation and the main ILP learning settings. We describe the main building blocks of an ILP system. We compare several ILP systems on several dimensions. We describe in detail four systems (Aleph, TILDE, ASPAL, and Metagol).
Intelligence Primer
This primer explores the exciting subject of intelligence. Intelligence is a fundamental component of all living things, as well as Artificial Intelligence(AI). Artificial Intelligence has the potential to affect all of our lives and a new era for modern humans. This paper is an attempt to explore the ideas associated with intelligence, and by doing so understand the implications, constraints, and potentially the capabilities of future Artificial Intelligence. As an exploration, we journey into different parts of intelligence that appear essential. We hope that people find this useful in determining where Artificial Intelligence may be headed. Also, during the exploration, we hope to create new thought-provoking questions. Intelligence is not a single weighable quantity but a subject that spans Biology, Physics, Philosophy, Cognitive Science, Neuroscience, Psychology, and Computer Science. Historian Yuval Noah Harari pointed out that engineers and scientists in the future will have to broaden their understandings to include disciplines such as Psychology, Philosophy, and Ethics. Fiction writers have long portrayed engineers and scientists as deficient in these areas. Today, modern society, the emergence of Artificial Intelligence, and legal requirements all act as forcing functions to push these broader subjects into the foreground. We start with an introduction to intelligence and move quickly onto more profound thoughts and ideas. We call this a Life, the Universe and Everything primer, after the famous science fiction book by Douglas Adams. Forty-two may very well be the right answer, but what are the questions?
Optimizing Long-term Social Welfare in Recommender Systems: A Constrained Matching Approach
Mladenov, Martin, Creager, Elliot, Ben-Porat, Omer, Swersky, Kevin, Zemel, Richard, Boutilier, Craig
Most recommender systems (RS) research assumes that a user's utility can be maximized independently of the utility of the other agents (e.g., other users, content providers). In realistic settings, this is often not true---the dynamics of an RS ecosystem couple the long-term utility of all agents. In this work, we explore settings in which content providers cannot remain viable unless they receive a certain level of user engagement. We formulate the recommendation problem in this setting as one of equilibrium selection in the induced dynamical system, and show that it can be solved as an optimal constrained matching problem. Our model ensures the system reaches an equilibrium with maximal social welfare supported by a sufficiently diverse set of viable providers. We demonstrate that even in a simple, stylized dynamical RS model, the standard myopic approach to recommendation---always matching a user to the best provider---performs poorly. We develop several scalable techniques to solve the matching problem, and also draw connections to various notions of user regret and fairness, arguing that these outcomes are fairer in a utilitarian sense.