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Is the IoT acting in the Right Interest? - Netopia

#artificialintelligence

A major concern for our rights as consumers is the way that machines direct us according to their interests and not ours. Experts such as Dr Jonathan Cave warn about the growing influence of software machines on our lives. Cave says that software machines will make use of what they know about us to present information to us which may not be to our advantage. Because the search engines that we have used know a certain amount about us and our previous buying decisions, they are keen to exploit that by turning us into a buyer of something, by a process known as'filter bubbles' โ€“ a feedback loop where recommendations only reinforce existing patterns. As Dr Rupp states'if you are not paying then you are not the customer'. Thus if you are not paying for an internet technology such as Google or Facebook it is not acting in your interests, but rather in the interests of the customers who are paying to present information to you.


Salesforce ISV Partner โ€“ SalesChoice achieves over 90% Accuracy at RelationEdge SalesChoice

#artificialintelligence

RelationEdge Overview RelationEdge is a CA, HQ company with offices across the USA in: Atlanta, Chicago, Dallas, Denver, LA, NY, San Diego, Irving, San Francisco and Seattle. They specialize in implementing technology solutions that are simple to use, but provide powerful information that drives their clients' business to higher performance levels. Their methodology is based on business process engineering and sales management, employing a process first, technology second approach to solve their clients business problems. Their passion for helping clients better market, sell, and service distinguish them from their competitors. The Business Challenge RelationEdge's rapid growth has resulted in over 70% yr.


Ford's life-like robot workers

FOX News

In 1913, Ford Motor Company changed the car-making game by installing moving assembly belts in its production facilities. The move made building automobiles quicker, cheaper, and more efficient than before, while also setting the tone for modern manufacturing in general. Since then, the industry has made leaps and bounds by automating much of the process, but Ford isn't done innovating yet. At an assembly plant in Cologne, Germany, the American brand is running a trial program where humans and robots work side by side. Called co-bots, these small machines help workers install shock absorbers onto Fiesta subcompact vehicles, but according to Ford, the co-bots can even be programmed to make coffee or give massages.


On the Application of Support Vector Machines to the Prediction of Propagation Losses at 169 MHz for Smart Metering Applications

arXiv.org Machine Learning

Recently, the need of deploying new wireless networks for smart gas metering has raised the problem of radio planning in the169 MHz band. Unluckily, software tools commonly adopted for radio planning in cellular communication systems cannot be employed to solve this problem because of the substantially lower transmission frequencies characterizing this application. In this manuscript a novel data-centric solution, based on the use of support vector machine techniques for classification and regression, is proposed. Our method requires the availability of a limited set of received signal strength measurements and the knowledge of a three-dimensional map of the propagation environment of interest, and generates both an estimate of the coverage area and a prediction of the field strength within it. Numerical results referring to different Italian villages and cities evidence that our method is able to achieve good accuracy at the price of an acceptable computational cost and of a limited effort for the acquisition of measurements in the considered environments.


On the Satisfiability Problem for SPARQL Patterns

Journal of Artificial Intelligence Research

The satisfiability problem for SPARQL 1.0 patterns is undecidable in general, since the relational algebra can be emulated using such patterns. The goal of this paper is to delineate the boundary of decidability of satisfiability in terms of the constraints allowed in filter conditions. The classes of constraints considered are bound-constraints, negated bound- constraints, equalities, nonequalities, constant-equalities, and constant-nonequalities. The main result of the paper can be summarized by saying that, as soon as inconsistent filter conditions can be formed, satisfiability is undecidable. The key insight in each case is to find a way to emulate the set difference operation. Undecidability can then be obtained from a known undecidability result for the algebra of binary relations with union, composition, and set difference. When no inconsistent filter conditions can be formed, satisfiability is decidable by syntactic checks on bound variables and on the use of literals. Although the problem is shown to be NP-complete, it is experimentally shown that the checks can be implemented efficiently in practice. The paper also points out that satisfiability for the so-called โ€˜well-designedโ€™ patterns can be decided by a check on bound variables and a check for inconsistent filter conditions.


A Batch, Off-Policy, Actor-Critic Algorithm for Optimizing the Average Reward

arXiv.org Machine Learning

We develop an off-policy actor-critic algorithm for learning an optimal policy from a training set composed of data from multiple individuals. This algorithm is developed with a view toward its use in mobile health. In the behavioral health communities there is increasing interest in, and use of, mobile devices to deliver treatments that target behavior change. Mobile devices can be used to provide treatment when, where, and in the amount desired (Litvin et al., 2013; Kumar et al., 2013). Increasingly scientists are looking to passive sensing (wearable devices, GPS, activity on the smartphone) and self-report of internal states to individualize the intervention to the person in terms of when, how and where to deliver treatment.


Geometric Mean Metric Learning

arXiv.org Machine Learning

We revisit the task of learning a Euclidean metric from data. We approach this problem from first principles and formulate it as a surprisingly simple optimization problem. Indeed, our formulation even admits a closed form solution. This solution possesses several very attractive properties: (i) an innate geometric appeal through the Riemannian geometry of positive definite matrices; (ii) ease of interpretability; and (iii) computational speed several orders of magnitude faster than the widely used LMNN and ITML methods. Furthermore, on standard benchmark datasets, our closed-form solution consistently attains higher classification accuracy.


Graphical Model Sketch

arXiv.org Machine Learning

Structured high-cardinality data arises in many domains, and poses a major challenge for both modeling and inference. Graphical models are a popular approach to modeling structured data but they are unsuitable for high-cardinality variables. The count-min (CM) sketch is a popular approach to estimating probabilities in high-cardinality data but it does not scale well beyond a few variables. In this work, we bring together the ideas of graphical models and count sketches; and propose and analyze several approaches to estimating probabilities in structured high-cardinality streams of data. The key idea of our approximations is to use the structure of a graphical model and approximately estimate its factors by "sketches", which hash high-cardinality variables using random projections. Our approximations are computationally efficient and their space complexity is independent of the cardinality of variables. Our error bounds are multiplicative and significantly improve upon those of the CM sketch, a state-of-the-art approach to estimating probabilities in streams. We evaluate our approximations on synthetic and real-world problems, and report an order of magnitude improvements over the CM sketch.


On the use of Harrell's C for clinical risk prediction via random survival forests

arXiv.org Machine Learning

Random survival forests (RSF) are a powerful method for risk prediction of right-censored outcomes in biomedical research. RSF use the log-rank split criterion to form an ensemble of survival trees. The most common approach to evaluate the prediction accuracy of a RSF model is Harrell's concordance index for survival data ('C index'). Conceptually, this strategy implies that the split criterion in RSF is different from the evaluation criterion of interest. This discrepancy can be overcome by using Harrell's C for both node splitting and evaluation. We compare the difference between the two split criteria analytically and in simulation studies with respect to the preference of more unbalanced splits, termed end-cut preference (ECP). Specifically, we show that the log-rank statistic has a stronger ECP compared to the C index. In simulation studies and with the help of two medical data sets we demonstrate that the accuracy of RSF predictions, as measured by Harrell's C, can be improved if the log-rank statistic is replaced by the C index for node splitting. This is especially true in situations where the censoring rate or the fraction of informative continuous predictor variables is high. Conversely, log-rank splitting is preferable in noisy scenarios. Both C-based and log-rank splitting are implemented in the R~package ranger. We recommend Harrell's C as split criterion for use in smaller scale clinical studies and the log-rank split criterion for use in large-scale 'omics' studies.