Overview
Clustering with Deep Learning: Taxonomy and New Methods
Aljalbout, Elie, Golkov, Vladimir, Siddiqui, Yawar, Cremers, Daniel
Clustering is a fundamental machine learning method. The quality of its results is dependent on the data distribution. For this reason, deep neural networks can be used for learning better representations of the data. In this paper, we propose a systematic taxonomy for clustering with deep learning, in addition to a review of methods from the field. Based on our taxonomy, creating new methods is more straightforward. We also propose a new approach which is built on the taxonomy and surpasses some of the limitations of some previous work. Our experimental evaluation on image datasets shows that the method approaches state-of-the-art clustering quality, and performs better in some cases.
Estimating Heterogeneous Consumer Preferences for Restaurants and Travel Time Using Mobile Location Data
Athey, Susan, Blei, David, Donnelly, Robert, Ruiz, Francisco, Schmidt, Tobias
This paper analyzes consumer choices over lunchtime restaurants using data from a sample of several thousand anonymous mobile phone users in the San Francisco Bay Area. The data is used to identify users' approximate typical morning location, as well as their choices of lunchtime restaurants. We build a model where restaurants have latent characteristics (whose distribution may depend on restaurant observables, such as star ratings, food category, and price range), each user has preferences for these latent characteristics, and these preferences are heterogeneous across users. Similarly, each item has latent characteristics that describe users' willingness to travel to the restaurant, and each user has individual-specific preferences for those latent characteristics. Thus, both users' willingness to travel and their base utility for each restaurant vary across user-restaurant pairs. We use a Bayesian approach to estimation. To make the estimation computationally feasible, we rely on variational inference to approximate the posterior distribution, as well as stochastic gradient descent as a computational approach. Our model performs better than more standard competing models such as multinomial logit and nested logit models, in part due to the personalization of the estimates. We analyze how consumers re-allocate their demand after a restaurant closes to nearby restaurants versus more distant restaurants with similar characteristics, and we compare our predictions to actual outcomes. Finally, we show how the model can be used to analyze counterfactual questions such as what type of restaurant would attract the most consumers in a given location.
Innovative Report on Artificial Intelligence in Fintech Market CAGR of 40% by 2022- Emerging Trends, Growth Factors, Newly Invented Strategies, Investigation and Key Players like Microsoft, Google, Salesforce.com, IBM, Intel, Amazon Web Services, Inbenta Technologies, IPsoft, Nuance Communications – satPRnews
The Global Artificial Intelligence in Fintech Market is anticipated to grow rapidly and will post a CAGR of 40% during the forecast period. The availability of spatial data is a major factor driving the growth of the Artificial Intelligence in Fintech market. Sustaining in a competitive market has become crucial for the financial sector due to technological advancements. In order to achieve efficiency across business processes, enterprises need to design and layout a plan of action. This can be done by properly implementing AI practices into its operations.
Visual Analytics in Deep Learning: An Interrogative Survey for the Next Frontiers
Hohman, Fred, Kahng, Minsuk, Pienta, Robert, Chau, Duen Horng
Deep learning has recently seen rapid development and significant attention due to its state-of-the-art performance on previously-thought hard problems. However, because of the innate complexity and nonlinear structure of deep neural networks, the underlying decision making processes for why these models are achieving such high performance are challenging and sometimes mystifying to interpret. As deep learning spreads across domains, it is of paramount importance that we equip users of deep learning with tools for understanding when a model works correctly, when it fails, and ultimately how to improve its performance. Standardized toolkits for building neural networks have helped democratize deep learning; visual analytics systems have now been developed to support model explanation, interpretation, debugging, and improvement. We present a survey of the role of visual analytics in deep learning research, noting its short yet impactful history and summarize the state-of-the-art using a human-centered interrogative framework, focusing on the Five W's and How (Why, Who, What, How, When, and Where), to thoroughly summarize deep learning visual analytics research. We conclude by highlighting research directions and open research problems. This survey helps new researchers and practitioners in both visual analytics and deep learning to quickly learn key aspects of this young and rapidly growing body of research, whose impact spans a diverse range of domains.
A Framework for Approaching Textual Data Science Tasks
There's an awful lot of text data available today, and enormous amounts of it are being created on a daily basis, ranging from structured to semi-structured to fully unstructured. What can we do with it? Well, quite a bit, actually; it depends on what your objectives are, but there are 2 intricately related yet differentiated umbrellas of tasks which can be exploited in order to leverage the availability of all of this data. NLP is a major aspect of computational linguistics, and also falls within the realms of computer science and artificial intelligence. Text mining exists in a similar realm as NLP, in that it is concerned with identifying interesting, non-trivial patterns in textual data.
Quantum Machine Learning: An Overview
At a recent conference in 2017, Microsoft CEO Satya Nadella used the analogy of a corn maze to explain the difference in approach between a classical computer and a quantum computer. In trying to find a path through the maze, a classical computer would start down a path, hit an obstruction, backtrack; start again, hit another obstruction, backtrack again until it ran out of options. Although an answer can be found, this approach could be a very time-consuming. They take every path in the corn maze simultaneously." Thus, leading to an exponential reduction in the number of steps required to solve a problem.
Minimizing Model Risk with Automated Machine Learning - DataRobot
In today's complicated financial landscape accurate models are a necessity for banks to remain competitive, but developing accurate models is challenging. Models are inherently complex -- and if developed poorly can do more harm than good. Minimizing Model Risk with Automated Machine Learning will demonstrate how banks can use Automated Machine Learning to gain a competitive advantage, while quickly aligning their business operation to regulatory requirements. We'll provide an overview of current trends and expectations for model risk management regulatory compliance, and how industry leading financial institutions are leveraging Automated Machine Learning to provide a much stronger framework for model development and validation than traditional manual efforts.
Image Processing and Neural Networks Intuition: Part 1
In this series, I will talk about training a simple neural network on image data. To give a brief overview, neural networks is a kind of supervised learning. By this I mean, the model needs to train on historical data to understand the relationship between input variables and target variables. Once trained, the model can be used to predict target variable on new input data. In the previous posts, we have written about linear, lasso and ridge regression.
AI and Automation – A Combo to Manage Cyber Security Threats
Artificial Intelligence and Automation are being used in multiple industries to make the lives of people better and to make things more efficient for organizations. AI is being used to diagnose medical conditions or offer legal advice. Automation is being used in factories to reduce reliance on manual labor and to improve the quality of products. As AI and Automation are becoming more universally applicable concepts and can be implemented irrespective of the industry. These innovative technologies depend on an organization's critical data that today is threatened by various factors.