Overview


Machine Learning With Big Data Coursera

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About this course: Want to make sense of the volumes of data you have collected? This course provides an overview of machine learning techniques to explore, analyze, and leverage data. You will be introduced to tools and algorithms you can use to create machine learning models that learn from data, and to scale those models up to big data problems. At the end of the course, you will be able to: • Design an approach to leverage data using the steps in the machine learning process.


A Review of Popular Deep Learning Models

@machinelearnbot

In the financial services industry, deep learning models are being used for "predictive analytics," which have helped improve forecasting, recommendations, and risk analysis. As deep learning algorithms become increasingly prevalent across industries, deep learning models are also becoming more accessible to people outside of mathematics, engineering and robotics. Neural style, a deep learning algorithm, goes beyond filters and allows you to transpose the style of one image, perhaps Van Gogh's "Starry Night," and apply that style onto any other image. He builds machine learning models, researches artificial intelligence, and starts companies.


Building a Chatbot: analysis & limitations of modern platforms - Tryolabs Blog

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And since all that glitters is not gold, we will also see that there is still room for improvement, and that sometimes custom natural language processing (NLP) and machine learning (ML) components are needed to achieve the desired results. Thus, the chatbot needs to perform previously information extraction on the input to extract the important entities: locations, airlines, airports, dates, etc. It helps users achieve tasks such as buying a ticket, ordering food or getting specific information. You would not use these platforms to build a chatbot for ordering food or buying tickets, but you could find that they are very interesting to quickly model an entertainment chatbot or, for example, a chatbot that replaces a FAQ and gives a better user experience.


Regression Trees - What is the best reference?

@machinelearnbot

Encyclopedia of Artificial Intelligence, 1, 437-442 – Gives an overview of the different types of decision trees including CART, and also the popular applications of such decision trees. Principles of data mining, MIT Press, which gives a detailed description of all types of decision trees (including CART) In your quest to learn about decision trees, in particular the CART classifier, please remember that all types of decision tree classifiers that you read about will more or less follow the same process: (1) splitting data using a so-called splitting criterion (2) forming the final decision tree, and (3) pruning the final tree to reduce its size and increase its classification abilities. In terms of Step 1, decision tree classifiers may use different splitting criterion, for example the CART classifier uses a gini index to make the splits in the data (which only results in binary splits) as opposed to the information gain measure (which can result in two or more splits) like other tree classifiers use. Another major difference between decision tree classifiers is the type of data they can handle/process: CART can process both categorical and numerical data, while others can only handle categorical data.


An introduction to frequent pattern mining - The Data Mining Blog

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Pattern mining algorithms can be applied on various types of data such as transaction databases, sequence databases, streams, strings, spatial data, graphs, etc. Pattern mining algorithms can be designed to discover various types of patterns: subgraphs, associations, indirect associations, trends, periodic patterns, sequential rules, lattices, sequential patterns, high-utility patterns, etc. The Apriori algorithm has given rise to multiple algorithms that address the same problem or variations of this problem such as to (1) incrementally discover frequent itemsets and associations, (2) to discover frequent subgraphs from a set of graphs, (3) to discover subsequences common to several sequences, etc. If you want to continue reading on this topic, you may read my survey on sequential pattern mining, which gives a good introduction to the topic of discovering frequent patterns in sequences (sequential patterns).


An Introduction to Variable and Feature Selection

@machinelearnbot

Our scientist published a methodology to automate this process and efficiently handle la large number of features (called variables by statisticians). The objective of variable selection is three-fold: improving the prediction performance of the predictors, providing faster and more cost-effective predictors, and providing a better understanding of the underlying process that generated the data. The contributions of this special issue cover a wide range of aspects of such problems: providing a better definition of the objective function, feature construction, feature ranking, multivariate feature selection, efficient search methods, and feature validity assessment methods. Sophisticated wrapper or embedded methods improve predictor performance compared to simpler variable ranking methods like correlation methods, but the improvements are not always significant: domains with large numbers of input variables suffer from the curse of dimensionality and multivariate methods may overfit the data.


[N] I made an overview of the changes in Tensorflow version 1.3 • r/MachineLearning

@machinelearnbot

Hey everyone, I'm the author of this article. Tensorflow releases go very fast nowadays, and I noticed it's hard to keep up. This weekend I spent some time going over the changelog, searching for changed parts of Tensorflow that might be important for me and others. If you have any questions about this version update, or in general about Tensorflow, leave a comment here or under the article!


AI: What It Is and What Your Nonprofit Needs to Know

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In this piece, we introduce the concept of AI as it relates to other industry terms, consider recent developments in the nonprofit industry, and suggest unique ways it may be leveraged in the future. While we aren't yet clear if the latest innovations in neural networks will lead to artificial general intelligence, machine learning and artificial intelligence have uses for nonprofits, and serious implications for the social sector. To ensure advancements in AI continue to impact the social impact industry, a recent coalition has formed to help facilitate shared discoveries and best practices. For example, UNICEF is applying elements of machine learning to private sector data through this partnership in order to create models that assist emergency response efforts.


Watson Is Just the Beginning

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At the Kellogg School's first Computational Social Science Summit, David Ferrucci, the lead scientist behind IBM's Watson computer, sat down with Kellogg School professor Brian Uzzi to discuss how machine learning and artificial intelligence will become central to the future of business. In the first of these videos, Ferrucci gives an overview of the five ways machine learning will be transformative. Computational social science aims to discover universal facts. Smarter machines are freeing up students to collaborate, solve problems, design, and innovate.


The Science of Brute Force

Communications of the ACM

This has changed in the last two decades, due to the progress in Satisfiability (SAT) solving, which by adding brute reason renders brute force into a powerful approach to deal with many problems easily and automatically. This combination of enormous computational power with "magical brute force" can now solve very hard combinatorial problems, as well as proving safety of systems such as railways. To solve the Boolean Pythagorean Triples Problem, it suffices to show the existence of a subset of the natural numbers, such that any partition of that subset into two parts has one part containing a Pythagorean triple. This performance boost resulted in the SAT revolution:3 encode problems arising from many interesting applications as SAT formulas, solve these formulas, and decode the solutions to obtain answers for the original problems.