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Everything Google announced at I/O 2016

#artificialintelligence

Developers and press gathered today at the Shoreline Amphitheater in Mountain View, California, for the annual ritual known as Google I/O. Are you ready for a Google overdose? Here's everything the company announced during its most important event of the year: Google launched its latest Android N developer preview today -- the first one to receive "beta-quality" status. Developers can start testing their apps for this release by downloading the new preview here. The factory images should arrive shortly for the following supported devices: Nexus 5X, Nexus 6, Nexus 6P, Nexus 9, Nexus 9 LTE, Nexus Player, General Mobile 4G, and Pixel C. Remember the rumor suggesting Google may use an online poll to name Android N? Well, it turns the rumor was half-correct: It's more of a suggestion box than a poll. Google wants to hear your what you've got at android.com/n.


Develop Your First Neural Network in Python With Keras Step-By-Step

#artificialintelligence

Keras is a powerful easy-to-use Python library for developing and evaluating deep learning models. It wraps the efficient numerical computation libraries Theano and TensorFlow and allows you to define and train neural network models in a few short lines of code. In this post you will discover how to create your first neural network model in Python using Keras. Develop Your First Neural Network in Python With Keras Step-By-Step Photo by Phil Whitehouse, some rights reserved. There is not a lot of code required, but we are going to step over it slowly so that you will know how to create your own models in the future.


Introduction to the Artificial Intelligence Ecosystem [On-Demand Webinar]

#artificialintelligence

Watch this webinar, presented by Kris Hammond, Chief Scientist of Narrative Science, to learn about the different subfields of technologies that fall under the umbrella of AI such as machine learning, advanced analytics, and advanced natural language generation. Viewers will finish the webinar understanding how the different AI technologies emulate human reasoning and how they may be able to apply these technologies to their own business.


AI will create a 'useless class' of humans, historian warns

#artificialintelligence

The rise of artificial intelligence could have a more anticlimactic outcome than most doomsday films would have you expect. Rather than being violently wiped out by robotic beings, humankind may become'eternally useless' due to the increasing capabilities of AI. This is according to bestselling author Yuval Noah Harari, who explores bleak future of humanity and'the rise of the useless class' in his upcoming novel Homo Deus: A Brief History of Tomorrow. The rise of artificial intelligence could have a more anticlimactic outcome than most doomsday films would have you expect. Rather than being violently wiped out by robotic beings, the increasing capabilities of AI may instead render humankind'eternally useless.'


ROSS Intelligence announces partnership with BakerHostetler

#artificialintelligence

"At BakerHostetler, we believe that emerging technologies like cognitive computing and other forms of machine learning can help enhance the services we deliver to our clients," said Bob Craig, Chief Information Officer. "We are proud to team up with innovators like ROSS and we will continue to explore these cutting-edge technologies as they develop." "BakerHostetler's commitment to the future of the legal practice and ensuring they continue to deliver the highest level of value to their clients completely aligns with our vision at ROSS Intelligence," said Andrew Arruda, CEO/Cofounder. "BakerHostetler has been using ROSS since the first days of its deployment and we are proud to partner with a true leader in the industry as we continue to develop additional AI legal assistants." About ROSS Intelligence ROSS Intelligence began out of research at the University of Toronto in 2014 with the goal of building an AI legal research assistant to allow lawyers to enhance and scale their abilities.


Random Fourier Features for Operator-Valued Kernels

arXiv.org Machine Learning

Devoted to multi-task learning and structured output learning, operator-valued kernels provide a flexible tool to build vector-valued functions in the context of Reproducing Kernel Hilbert Spaces. To scale up these methods, we extend the celebrated Random Fourier Feature methodology to get an approximation of operator-valued kernels. We propose a general principle for Operator-valued Random Fourier Feature construction relying on a generalization of Bochner's theorem for translation-invariant operator-valued Mercer kernels. We prove the uniform convergence of the kernel approximation for bounded and unbounded operator random Fourier features using appropriate Bernstein matrix concentration inequality. An experimental proof-of-concept shows the quality of the approximation and the efficiency of the corresponding linear models on example datasets.


A Novel Approach for Stable Selection of Informative Redundant Features from High Dimensional fMRI Data

arXiv.org Machine Learning

Numerous functional imaging studies have reported neural activities during the experience of specific emotions or cognitive activities and demonstrated the potentials of functional imaging MRI for the classification of cognitive states or identification of mental disorders. In this paper, we consider learning from fMRI data as a pattern recognition problem and mainly focus on how to accurately and stably identify the relevant features (either voxels or network connections) that participate in a given cognitive task or that are closely related with certain mental disorders. In this paper, we will mainly consider the binary classification problems such as discriminating patients of certain mental discorder from the normal persons or classifying different cognative states, though the proposed idea can also be extended to the case of regression As we know, with the rapid development of data capture and storage technologies, the "curse of dimensionality" becomes a common issue in many fields [1] including the field of pattern recognition and machine learning, where "curse of dimensionality" often refers to an extremely high dimensional feature space. Therefore, feature selection, as a way of dimensional reduction, is critical in many pattern recognition applications such as medical image analysis, computer vision, speech recognition and many more [2]. In this paper, we consider the related challeges in the neuroimaging data based pattern recognition, where besides the "curse of dimensionality", feature selection has another common difficulty, which lies in the small number of training samples, due to varied reasons.


Posterior Dispersion Indices

arXiv.org Machine Learning

Probabilistic modeling is cyclical: we specify a model, infer its posterior, and evaluate its performance. Evaluation drives the cycle, as we revise our model based on how it performs. This requires a metric. Traditionally, predictive accuracy prevails. Yet, predictive accuracy does not tell the whole story. We propose to evaluate a model through posterior dispersion. The idea is to analyze how each datapoint fares in relation to posterior uncertainty around the hidden structure. We propose a family of posterior dispersion indices (PDI) that capture this idea. A PDI identifies rich patterns of model mismatch in three real data examples: voting preferences, supermarket shopping, and population genetics.


A note on privacy preserving iteratively reweighted least squares

arXiv.org Machine Learning

Iteratively reweighted least squares (IRLS) is a widely-used method in machine learning to estimate the parameters in the generalised linear models. In particular, IRLS for L1 minimisation under the linear model provides a closed-form solution in each step, which is a simple multiplication between the inverse of the weighted second moment matrix and the weighted first moment vector. When dealing with privacy sensitive data, however, developing a privacy preserving IRLS algorithm faces two challenges. First, due to the inversion of the second moment matrix, the usual sensitivity analysis in differential privacy incorporating a single datapoint perturbation gets complicated and often requires unrealistic assumptions. Second, due to its iterative nature, a significant cumulative privacy loss occurs. However, adding a high level of noise to compensate for the privacy loss hinders from getting accurate estimates. Here, we develop a practical algorithm that overcomes these challenges and outputs privatised and accurate IRLS solutions. In our method, we analyse the sensitivity of each moments separately and treat the matrix inversion and multiplication as a post-processing step, which simplifies the sensitivity analysis. Furthermore, we apply the {\it{concentrated differential privacy}} formalism, a more relaxed version of differential privacy, which requires adding a significantly less amount of noise for the same level of privacy guarantee, compared to the conventional and advanced compositions of differentially private mechanisms.


Consistency Analysis for the Doubly Stochastic Dirichlet Process

arXiv.org Machine Learning

This technical report proves components consistency for the Doubly Stochastic Dirichlet Process [1] with exponential convergence of posterior probability. We also present the fundamental properties for DSDP as well as inference algorithms. This report is also a support document for the paper "Computationally Efficient Hyperspectral Data Learning Based on the Doubly Stochastic Dirichlet Process" [1]. The probability of data partitions is important in mixture modeling [2]. LetM be the unordered partition ofn observations, then the probability mass function [3] ofM follows.