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AI tools could weaken doctors' skills in detecting colon cancer, study suggests

FOX News

Fox News anchor Bret Baier has the latest on the Murdoch Children's Research Institute's partnership with the Gladstone Institutes for the'Decoding Broken Hearts' initiative on'Special Report.' The benefits of artificial intelligence (AI) in the medical space are ever-growing, but evidence suggests it can also come with risks. A new study by European researchers investigated how AI can change the behavior of endoscopists when conducting a colonoscopy, and how their performance dips when not using AI. The research followed clinicians at four endoscopy centers in Poland participating in the ACCEPT (Artificial Intelligence in Colonoscopy for Cancer Prevention) trial, where AI tools for polyp detection were introduced at the end of 2021. Colonoscopies at these centers were randomly selected to be administered with or without AI assistance.



Reviews: Learning to Predict Layout-to-image Conditional Convolutions for Semantic Image Synthesis

Neural Information Processing Systems

This paper proposes a strongly conditional network for generating images from semantic maps. How impacted is this network by small changes in the input map - for example given 3 sequential frames of a video (as segmentation maps) - is the model consistent in assigning colors and structures? Or do small changes in the geometry of the semantic objects have a large impact on the output? This is mostly curiousity, as having smoothness inherent in the model has large potential for video applications. Some amount of qualitative results comparing to other models were shown, but showing the important regions of the input conditioning, and the influence of input perturbations on the model output could also lead to valuable insight - using something like GradCAM or related methods may be possible for checking the importance of input features.


Metagoals Endowing Self-Modifying AGI Systems with Goal Stability or Moderated Goal Evolution: Toward a Formally Sound and Practical Approach

Goertzel, Ben

arXiv.org Artificial Intelligence

We articulate here a series of specific metagoals designed to address the challenge of creating AGI systems that possess the ability to flexibly self-modify yet also have the propensity to maintain key invariant properties of their goal systems 1) a series of goal-stability metagoals aimed to guide a system to a condition in which goal-stability is compatible with reasonably flexible self-modification 2) a series of moderated-goal-evolution metagoals aimed to guide a system to a condition in which control of the pace of goal evolution is compatible with reasonably flexible self-modification The formulation of the metagoals is founded on fixed-point theorems from functional analysis, e.g. the Contraction Mapping Theorem and constructive approximations to Schauder's Theorem, applied to probabilistic models of system behavior We present an argument that the balancing of self-modification with maintenance of goal invariants will often have other interesting cognitive side-effects such as a high degree of self understanding Finally we argue for the practical value of a hybrid metagoal combining moderated-goal-evolution with pursuit of goal-stability -- along with potentially other metagoals relating to goal-satisfaction, survival and ongoing development -- in a flexible fashion depending on the situation


Task and Configuration Space Compliance of Continuum Robots via Lie Group and Modal Shape Formulations

Orekhov, Andrew L., Johnston, Garrison L. H., Simaan, Nabil

arXiv.org Artificial Intelligence

Continuum robots suffer large deflections due to internal and external forces. Accurate modeling of their passive compliance is necessary for accurate environmental interaction, especially in scenarios where direct force sensing is not practical. This paper focuses on deriving analytic formulations for the compliance of continuum robots that can be modeled as Kirchhoff rods. Compared to prior works, the approach presented herein is not subject to the constant-curvature assumptions to derive the configuration space compliance, and we do not rely on computationally-expensive finite difference approximations to obtain the task space compliance. Using modal approximations over curvature space and Lie group integration, we obtain closed-form expressions for the task and configuration space compliance matrices of continuum robots, thereby bridging the gap between constant-curvature analytic formulations of configuration space compliance and variable curvature task space compliance. We first present an analytic expression for the compliance of a single Kirchhoff rod. We then extend this formulation for computing both the task space and configuration space compliance of a tendon-actuated continuum robot. We then use our formulation to study the tradeoffs between computation cost and modeling accuracy as well as the loss in accuracy from neglecting the Jacobian derivative term in the compliance model. Finally, we experimentally validate the model on a tendon-actuated continuum segment, demonstrating the model's ability to predict passive deflections with error below 11.5\% percent of total arc length.


Microsoft's Surface needs a fresh start. Here's how to fix it

PCWorld

Throughout all of this, Microsoft's Surface lineup has remained pretty much unchanged for years. Shouldn't Microsoft be doing something about it? Microsoft launched the original Surface in 2012 to set new standards for the PC market. But lately it's looking more and more like other laptop manufacturers are blazing a trail, and Microsoft has let Surface devices lag behind. Its fourth-quarter earnings report detailed problems launching Surface devices, and executives said that falling device sales would actually accelerate into this quarter.


AI Quality - the Key to Driving Business Value with AI - TruEra

#artificialintelligence

Over the past few years, inspired by the promise of Artificial Intelligence (AI), we have seen enterprises embrace the first big challenge of AI: building it in the first place. There has been significant adoption of machine learning (ML) and AI in enterprises, aided by the broad availability of solutions for data preparation, model development and training, and model deployment. Now, however, we are seeing enterprises shift their focus from getting these basic building blocks in place to tackling the next big challenge: how do you drive real, sustainable business value with AI? Answering this question requires solving a whole new set of problems. It requires solving the challenge of AI Quality. At TruEra, we believe that solving the problem of AI Quality is key to driving and preserving business value.


An introduction to Autoencoders for Beginners

#artificialintelligence

Autoencoders are unstructured learning models that utilize the power of neural networks to perform the task of representation learning. In the context of machine learning, representation learning means embedding the components and features of original data in some low-dimensional structure for better understanding, visualizing, and extraction of meaningful information. These low dimensional vectors can help us gain amazing information about our data such as how close two instances of the dataset are, finding structure and patterns in the dataset, etc. In this big-data era, where petabytes of data are generated and processed by leading social networking sites and e-commerce giants, we are living in a world of data abundance. Our machine learning algorithms have only mainly exploited labeled datasets which are rare and costly. Most of the data generated are unstructured and unlabelled, so it is high time our machine learning community should focus on unsupervised learning algorithms and not just the supervised ones to unlock the true potential of AI and machine learning.


Entropy is a measure of uncertainty

#artificialintelligence

Suppose you are talking with three patients in the waiting room of a doctor's office. All three of them have just completed a medical test which, after some processing, yields one of two possible results: the disease is either present or absent. Let's assume we are dealing with curious and data-oriented individuals. They've researched the probabilities for their specific risk profiles in advance and are now eager to find out the result. Patient A knows that, statistically, there is a 95% chance that he has the disease in question.


Computer Scientists Prove Why Bigger Neural Networks Do Better

#artificialintelligence

Our species owes a lot to opposable thumbs. But if evolution had given us extra thumbs, things probably wouldn't have improved much. One thumb per hand is enough. As they've gotten bigger, they have come to grasp more. This has been a surprise to onlookers.