Goto

Collaborating Authors

 Europe


Beyond von Neumann, Neuromorphic Computing Steadily Advances

#artificialintelligence

Neuromorphic computing โ€“ brain inspired computing โ€“ has long been a tantalizing goal. The human brain does with around 20 watts what supercomputers do with megawatts. While neuromorphic computing progress has been intriguing, it has still not proven very practical. This week neuromorphic computing takes another step forward with a workshop being offered to users from academia, industry and education interested in using two European neuromorphic systems that have been years in development and are coming online for broader use โ€“ the BrainScaleS system launching at the Kirchhoff Institute for Physics of Heidelberg University and SpiNNaker, a complementary approach and similarly sized system at the University of Manchester. Ramping up BrainScaleS and SpiNNaker is an important milestone, strengthening Europe's position in hardware development for alternative computing. Both projects are part of the European Human Brain Project, originally funded by the European Commission's Future Emerging Technologies program (2005-2015).


Exact Algorithms for MRE Inference

Journal of Artificial Intelligence Research

Most Relevant Explanation (MRE) is an inference task in Bayesian networks that finds the most relevant partial instantiation of target variables as an explanation for given evidence by maximizing the Generalized Bayes Factor (GBF). No exact MRE algorithm has been developed previously except exhaustive search. This paper fills the void by introducing two Breadth-First Branch-and-Bound (BFBnB) algorithms for solving MRE based on novel upper bounds of GBF. One upper bound is created by decomposing the computation of GBF using a target blanket decomposition of evidence variables. The other upper bound improves the first bound in two ways. One is to split the target blankets that are too large by converting auxiliary nodes into pseudo-targets so as to scale to large problems. The other is to perform summations instead of maximizations on some of the target variables in each target blanket. Our empirical evaluations show that the proposed BFBnB algorithms make exact MRE inference tractable in Bayesian networks that could not be solved previously.


Completely random measures for modeling power laws in sparse graphs

arXiv.org Machine Learning

Network data appear in a number of applications, such as online social networks and biological networks, and there is growing interest in both developing models for networks as well as studying the properties of such data. Since individual network datasets continue to grow in size, it is necessary to develop models that accurately represent the real-life scaling properties of networks. One behavior of interest is having a power law in the degree distribution. However, other types of power laws that have been observed empirically and considered for applications such as clustering and feature allocation models have not been studied as frequently in models for graph data. In this paper, we enumerate desirable asymptotic behavior that may be of interest for modeling graph data, including sparsity and several types of power laws. We outline a general framework for graph generative models using completely random measures; by contrast to the pioneering work of Caron and Fox (2015), we consider instantiating more of the existing atoms of the random measure as the dataset size increases rather than adding new atoms to the measure. We see that these two models can be complementary; they respectively yield interpretations as (1) time passing among existing members of a network and (2) new individuals joining a network. We detail a particular instance of this framework and show simulated results that suggest this model exhibits some desirable asymptotic power-law behavior.


Multi-domain machine translation enhancements by parallel data extraction from comparable corpora

arXiv.org Machine Learning

Parallel texts are a relatively rare language resource, however, they constitute a very useful research material with a wide range of applications. This study presents and analyses new methodologies we developed for obtaining such data from previously built comparable corpora. The methodologies are automatic and unsupervised which makes them good for large scale research. The task is highly practical as non-parallel multilingual data occur much more frequently than parallel corpora and accessing them is easy, although parallel sentences are a considerably more useful resource. In this study, we propose a method of automatic web crawling in order to build topic-aligned comparable corpora, e.g. based on the Wikipedia or Euronews.com. We also developed new methods of obtaining parallel sentences from comparable data and proposed methods of filtration of corpora capable of selecting inconsistent or only partially equivalent translations. Our methods are easily scalable to other languages. Evaluation of the quality of the created corpora was performed by analysing the impact of their use on statistical machine translation systems. Experiments were presented on the basis of the Polish-English language pair for texts from different domains, i.e. lectures, phrasebooks, film dialogues, European Parliament proceedings and texts contained medicines leaflets. We also tested a second method of creating parallel corpora based on data from comparable corpora which allows for automatically expanding the existing corpus of sentences about a given domain on the basis of analogies found between them. It does not require, therefore, having past parallel resources in order to train a classifier.


Stopping criteria for boosting automatic experimental design using real-time fMRI with Bayesian optimization

arXiv.org Machine Learning

Bayesian optimization has been proposed as a practical and efficient tool through which to tune parameters in many difficult settings. Recently, such techniques have been combined with real-time fMRI to propose a novel framework which turns on its head the conventional functional neuroimaging approach. This closed-loop method automatically designs the optimal experiment to evoke a desired target brain pattern. One of the challenges associated with extending such methods to real-time brain imaging is the need for adequate stopping criteria, an aspect of Bayesian optimization which has received limited attention. In light of high scanning costs and limited attentional capacities of subjects an accurate and reliable stopping criteria is essential. In order to address this issue we propose and empirically study the performance of two stopping criteria.


Artificial Intelligence in Business: 10 Important Statistics

#artificialintelligence

Join this webinar to learn why omni-channel programs fail, secrets of "best-in-class" contact centers, and how to align channel-mix and customer preferences. Over 50% of attendees are repeated customers or referrals. The 52nd, 53rd and 54th will be held in Hong Kong, Dubai and Madrid. Book early to enjoy USD300 discount. Held May 17-19 in Denver, Colorado, this event will feature powerful keynote addresses, engaging workshops, and valuable networking all aimed at driving business success through customer insights and intelligence.


Apple reveals Liam the 'recyclebot' that can rip an iPhone apart in 11 SECONDS

Daily Mail - Science & tech

Apple has revealed a 29 armed robot that can rip apart an iPhone in 11 seconds for recycling. It is hoped the machine will help recycle silver, tungsten and other metals from the handsets. The system started to operate at full capacity last month and can take apart one iPhone 6 every 11 seconds to recover aluminum, copper, tin, tungsten, cobalt, gold and silver parts, according to Apple. The system started to operate at full capacity last month and can take apart one iPhone 6 every 11 seconds to recover aluminum, copper, tin, tungsten, cobalt, gold and silver parts, according to Apple. It has already been installed near Apple's HQ in Cupertino, and it plans to build a second in Europe.


New Robot System Helps Migrants Cross The Mediterranean Safely

NPR Technology

Engineers are testing a new robot rescue system in the Greek islands, hoping it will be able to save some refugees while trying to cross from Turkey to Greece.


Public Predictions for the Future of Workforce Automation

#artificialintelligence

From self-driving vehicles and semi-autonomous robots to intelligent algorithms and predictive analytic tools, machines are increasingly capable of performing a wide range of jobs that have long been human domains. A 2013 study by researchers at Oxford University posited that as many as 47% of all jobs in the United States are at risk of "computerization." And many respondents in a recent Pew Research Center canvassing of technology experts predicted that advances in robotics and computing applications will result in a net displacement of jobs over the coming decades โ€“ with potentially profound implications for both workers and society as a whole. The ultimate extent to which robots and algorithms intrude on the human workforce will depend on a host of factors, but many Americans expect that this shift will become reality over the next half-century. In a national survey by Pew Research Center conducted June 10-July 12, 2015, among 2,001 adults, fully 65% of Americans expect that within 50 years robots and computers will "definitely" or "probably" do much of the work currently done by humans.


VIDEO: Drone shows growing life jacket 'graveyard'

BBC News

New drone footage has captured the growing pile of lifejackets abandoned by migrants after reaching the Greek island of Lesbos. It is now more than three metres deep in some places, with boats being added to the pile.