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A computer program that learns how to save fuel

#artificialintelligence

FROM avoiding jaywalkers to emergency braking to eventually, perhaps, chauffeuring the vehicle itself, it is clear that artificial intelligence (AI) will be an important part of the cars of the future. But it is not only the driving of them that will benefit. AI will also permit such cars to use energy more sparingly. Cars have long had computerised engine-management that responds on the fly to changes in driving conditions. The introduction of electric power has, however, complicated matters.



Artificial intelligence uncovers new insight into biophysics of cancer

#artificialintelligence

Their machine-learning platform predicted a trio of reagents that was able to generate a never-before-seen cancer-like phenotype in tadpoles. The research, reported in Scientific Reports on January 27, shows how artificial intelligence (AI) can help human researchers in fields such as oncology and regenerative medicine control complex biological systems to reach new and previously unachievable outcomes. The researchers had previously shown that pigment cells (melanocytes) in developing frogs could be converted to a cancer-like, metastatic form by disrupting their normal bioelectric and serotonergic signaling and had used AI to reverse-engineer a model that explained this complex process. However, during these extensive experiments, the biologists observed something remarkable: All the melanocytes in a single frog larva either converted to the cancer-like form or remained completely normal. Conversion of only some of the pigment cells in a single tadpole was never seen; how, the researchers asked, could such an all-or-none coordination of cells across the tadpole body be explained and controlled?


Artificial Intelligence: Reinforcement Learning in Python

#artificialintelligence

When people talk about artificial intelligence, they usually don't mean supervised and unsupervised machine learning. These tasks are pretty trivial compared to what we think of AIs doing - playing chess and Go, driving cars, and beating video games at a superhuman level. Reinforcement learning has recently become popular for doing all of that and more. Much like deep learning, a lot of the theory was discovered in the 70s and 80s but it hasn't been until recently that we've been able to observe first hand the amazing results that are possible. In 2016 we saw Google's AlphaGo beat the world Champion in Go. We saw AIs playing video games like Doom and Super Mario.


Most Disruptive Tech Trends of 2017

#artificialintelligence

As an amateur futurist I'm always watching the trends of innovation, here are some technology trends I'm keeping a close eye on as we approach 2017. Now we are entering a period where the convergence of multiple technologies and integrations results in an exponentially increasing potential for disruption in the future of work, commerce, manufacturing, Bigdata and AI. Distributed ledger technology that are decentralized databases that are hacker and fraud proof don't just have the potential to impact Banking and FinTech, but transform how our digital identity and customer reviews work. In an era where trust in at an all-time low between citizens and institutions, the blockchain can give the fallen credibility of various institutions a new measure of legitimacy. You would not have thought Amazon's 9-inch tall cylinder speaker controlled by a cloud-based voice assistant that goes by the name Alexa would change the world, but it's becoming increasingly apparent this product is a deal-breaker that not only tap into chatbots, product search and ecommerce but the future of how apps work together via a personal assistant.


Logistic Regression using python

@machinelearnbot

This article was posted by Arpan Gupta (Indian Institute of Technology). Let's learn from a precise demo on Fitting Logistic Regression on Titanic Data Set for Machine Learning Description:On April 15, 1912, the Titanic sank after colliding with an iceberg, killing 1502 out of 2224 passengers and crew. This tragedy has led to better safety regulations for ships.


Could Artificial Intelligence Replace Real Dermatologists?

#artificialintelligence

Scientists have found yet another way that Artificial Intelligence may replace humans. Stanford University researchers developed an algorithm for detecting skin cancer that's as accurate as a diagnosis from a human dermatologist, according to the study published in the science journal Nature. Led by graduate students in Stanford's Artificial Intelligence Laboratory, Andre Esteva and Brett Kuprel, 130,000 images of skin lesions representing more than 2,000 different diseases were collected. A team of 21 dermatologists analyzed photos that had already been verified for biopsies and determined whether treatment was needed. One experiment teststed the most common types of skin cancer while the other tested the deadliest.


What is XGBoost and why you should include it in your Machine Learning toolbox

#artificialintelligence

Over the past few years, Machine Learning has taken a leading role in the discovery of data-driven solutions. Of these solutions, classification is by far one of the most commonly used areas of Machine Learning which is widely applied in fraud detection, image classification, ad click-through rate prediction, identification of medical conditions and a number of other areas. There is a range of different classification algorithms, but over the years single-model approach is being replaced by ensemble methods which combine a number of different algorithms and provide more accurate results than separate models. If you have ever tried to apply an ensemble method on a big data set you should have definitely run into a very common problem - the computation takes hours, sometimes even days or weeks, unless you have a powerful machine. At the Higgs Boson Data Science competition everyone's attention was caught by XGBoost - a new classification algorithm which outperformed all other Machine Learning algorithms used in this competition and brought the 1st place to its developers.


Health Catalyst Launches Open Source Machine Learning: healthcare.ai

#artificialintelligence

Health Catalyst has used healthcare.ai to build predictive models that drive its clients' outcomes improvement efforts and span across the company's product lines. Models include but are not limited to a predictive model for central line associated blood stream infection (CLABSI), readmission models for COPD and other chronic conditions, schedule optimization, and financial predictions such as patient propensity to pay. "Machine learning and artificial intelligence are going to transform healthcare. We are seeing amazing results and yet we are barely getting started. We are applying it to the reduction of patient harm events, care management, hospital acquired infections, revenue cycle management, patient risk stratification, and more," said Dale Sanders, Executive Vice President of Health Catalyst.


Entropic Causality and Greedy Minimum Entropy Coupling

arXiv.org Machine Learning

We study the problem of identifying the causal relationship between two discrete random variables from observational data. We recently proposed a novel framework called entropic causality that works in a very general functional model but makes the assumption that the unobserved exogenous variable has small entropy in the true causal direction. This framework requires the solution of a minimum entropy coupling problem: Given marginal distributions of m discrete random variables, each on n states, find the joint distribution with minimum entropy, that respects the given marginals. This corresponds to minimizing a concave function of nm variables over a convex polytope defined by nm linear constraints, called a transportation polytope. Unfortunately, it was recently shown that this minimum entropy coupling problem is NP-hard, even for 2 variables with n states. Even representing points (joint distributions) over this space can require exponential complexity (in n, m) if done naively. In our recent work we introduced an efficient greedy algorithm to find an approximate solution for this problem. In this paper we analyze this algorithm and establish two results: that our algorithm always finds a local minimum and also is within an additive approximation error from the unknown global optimum.