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How to Get Started with Kaggle - Machine Learning Mastery

#artificialintelligence

Kaggle is a community and site for hosting machine learning competitions. Competitive machine learning can be a great way to develop and practice your skills, as well as demonstrate your capabilities. In this post, you will discover a simple 4-step process to get started and get good at competitive machine learning on Kaggle. How to Get Started with Kaggle Photo by David Mulder, some rights reserved. I took my last response to this question and decided to turn it into this blog post.I hope you find it useful.


Don;t believe the robot hype: putting bots to the test

#artificialintelligence

Webpack is the premier build tool for React and Angular 2 applications. In this course you;ll master each major feature of Webpack and learn how to optimize it for your own app. Webpack has a wealth of fancy features, but each requires in depth knowledge of how they work.


RiskSense Raises $14 Million for Intelligent Vulnerability Management - eSecurity Planet

#artificialintelligence

Add one more to the growing tally of security funding deals in early 2017. RiskSense, an Albuquerque, NM cyber-risk management company, announced this week that it had raised $14 million in a Series A round of financing. "The funding raised by existing investors Paladin Capital Group, Sun Mountain Capital, EPIC Ventures, and CenturyLink and a new investor Jump Capital will enable RiskSense to expand sales and marketing, enter new markets such as cyber-security insurance, and broaden and accelerate product development," Dr. Srinivas Mukkamala, co-founder and CEO of RiskSense, told eSecurity Planet. Spun off from New Mexico Institute of Mining and Technology and acting as advisors to the U.S. Department of Defense and U.S. Intelligence Community, RiskSense uses of artificial intelligence (AI) technologies, particularly machine learning, to help governments and enterprise organizations identify and prioritize risks to their networks and data. "RiskSense is changing the way organizations detect and manage cyber risk," said Mukkamala.


A Machine Learning Workflow

#artificialintelligence

I am giving a talk (in French) at the 85th edition of the ACFAS congress, May 9. I will discuss the engineering aspects of doing machine learning. But more importantly, I will discuss how Semantic Web techniques, technologies and specifications can help solving the engineering problems and how they can be leveraged and integrated in a machine learning workflow. The focus of my talk is based on my work in the field of the semantic web in the last 15 years and my more recent work creating the KBpedia Knowledge Graph at Cognonto and how they influenced our work to develop different machine learning solutions to integrate data, to extend knowledge structure, to tag and disambiguate concepts and entities in corpuses of texts, etc. One thing we experienced is that most of the work involved in such project is not directly related to machine learning problems (or at least related to the usage of machine learning algorithms). And then I recently read a survey conducted by CrowdFlower in 2016 that support what we experienced.


Interview with Two Women Data Scientists

@machinelearnbot

Genevera I. Allen (left) is a professor in the Departments of Statistics, and the Electrical and Computer Engineering, at Rice University. Corinne Cath (right) is a doctoral student at the Alan Turing Institute, the national institute for data science in UK. Below are extracts of recent interviews that are most relevant to our audience. Links to full interviews are provided. Genevera, what do you think of the shift from "Statistics" to "Statistical Learning and Data Science" in the statistics community (The "Data vs Math" Question?)


Who's responsible if a robot runs amok?

#artificialintelligence

We are seeing today novel expressions of artificial intelligence (AI) which were just a while ago the stuff of sci-fi: autonomous vehicles, self-learning machines, fiction-writing programs which may win literary prizes. Yet, what if the AI goes awry? What if an autonomous vehicle malfunctions and damages your property? What if an AI robot hacks into a smart city's network and steals every citizen's personal data? Will our current legal liability rules give us satisfactory outcomes when applied to such scenarios?


Capacity-achieving Sparse Superposition Codes via Approximate Message Passing Decoding

arXiv.org Machine Learning

Sparse superposition codes were recently introduced by Barron and Joseph for reliable communication over the AWGN channel at rates approaching the channel capacity. The codebook is defined in terms of a Gaussian design matrix, and codewords are sparse linear combinations of columns of the matrix. In this paper, we propose an approximate message passing decoder for sparse superposition codes, whose decoding complexity scales linearly with the size of the design matrix. The performance of the decoder is rigorously analyzed and it is shown to asymptotically achieve the AWGN capacity with an appropriate power allocation. Simulation results are provided to demonstrate the performance of the decoder at finite blocklengths. We introduce a power allocation scheme to improve the empirical performance, and demonstrate how the decoding complexity can be significantly reduced by using Hadamard design matrices.


Tying Word Vectors and Word Classifiers: A Loss Framework for Language Modeling

arXiv.org Machine Learning

Recurrent neural networks have been very successful at predicting sequences of words in tasks such as language modeling. However, all such models are based on the conventional classification framework, where the model is trained against one-hot targets, and each word is represented both as an input and as an output in isolation. This causes inefficiencies in learning both in terms of utilizing all of the information and in terms of the number of parameters needed to train. We introduce a novel theoretical framework that facilitates better learning in language modeling, and show that our framework leads to tying together the input embedding and the output projection matrices, greatly reducing the number of trainable variables. Our framework leads to state of the art performance on the Penn Treebank with a variety of network models.


Markov Chain Truncation for Doubly-Intractable Inference

arXiv.org Machine Learning

Computing partition functions, the normalizing constants of probability distributions, is often hard. Variants of importance sampling give unbiased estimates of a normalizer Z, however, unbiased estimates of the reciprocal 1/Z are harder to obtain. Unbiased estimates of 1/Z allow Markov chain Monte Carlo sampling of "doubly-intractable" distributions, such as the parameter posterior for Markov Random Fields or Exponential Random Graphs. We demonstrate how to construct unbiased estimates for 1/Z given access to black-box importance sampling estimators for Z. We adapt recent work on random series truncation and Markov chain coupling, producing estimators with lower variance and a higher percentage of positive estimates than before. Our debiasing algorithms are simple to implement, and have some theoretical and empirical advantages over existing methods.